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WO2017218673A1 - Porte-fusible, support et procédé associé - Google Patents

Porte-fusible, support et procédé associé Download PDF

Info

Publication number
WO2017218673A1
WO2017218673A1 PCT/US2017/037480 US2017037480W WO2017218673A1 WO 2017218673 A1 WO2017218673 A1 WO 2017218673A1 US 2017037480 W US2017037480 W US 2017037480W WO 2017218673 A1 WO2017218673 A1 WO 2017218673A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuse
carrier
holder
switch
side connector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2017/037480
Other languages
English (en)
Inventor
Timothy Joseph Brakefield
Troy Thomas MINNICK
Isaac Phillip SHAFFER
Paul Scott BUSKEY
Joseph Allen Brown
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Regal Beloit America Inc
Original Assignee
Regal Beloit America Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US15/182,743 external-priority patent/US10068737B2/en
Priority claimed from US15/182,717 external-priority patent/US10249465B2/en
Application filed by Regal Beloit America Inc filed Critical Regal Beloit America Inc
Priority to US16/309,363 priority Critical patent/US11456143B2/en
Publication of WO2017218673A1 publication Critical patent/WO2017218673A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/10—Adaptation for built-in fuses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/122—Automatic release mechanisms with or without manual release actuated by blowing of a fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/22—Intermediate or auxiliary parts for carrying, holding, or retaining fuse, co-operating with base or fixed holder, and removable therefrom for renewing the fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/24—Means for preventing insertion of incorrect fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/25—Safety arrangements preventing or inhibiting contact with live parts, including operation of isolation on removal of cover
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0208—Tools for inserting and removing fuses

Definitions

  • the field of the invention relates generally to electrical transmission equipment and more specifically to a fuse holder for use in electrical circuits for example those circuits used in electrical transmission equipment.
  • Fuses are regularly used in electrical circuits to provide protection for electrical components from electrical overloads. Fuses are for example used in electrical transmission equipment to provide protection for electrical components from electrical surges originating from the power line or from excessive electrical loads. Replaceable fuses are often used. These replaceable fuses are often placed in electrical or fuse boxes. The electrical or fuse boxes may be located where they are not easily accessed and may be mounted in any orientation where space permits.
  • replaceable fuses are consumed and provide an open circuit when exposed to a sufficient overload. Such replaceable fuses need to be replaced once consumed. Access to such replaceable fuses in electrical or fuse boxes is often difficult, particularly when the fuse box is located in a poorly accessible location.
  • the fuse may need to be safely replaced without disenabling the power in the line. Once removed, it may be discovered that a replacement fuse is not available which may necessitate that access to a hot power line may need to be prevented when the fuse is not in the holder.
  • Some fuses are quite large and need to be inserted easily and safely into the fuse box, while not contacting the hot power line.
  • the fuse boxes for these large fuses may accommodate may fuses and are inherently large. Minimizing the size of these fuse boxes may result in making access to the fuses more difficult, as sufficient space between adj acent fuses for accommodation for access by hands into the box may be compromised.
  • the present invention is directed toward alleviating at least some of the above-mentioned difficulties with the prior art.
  • a fuse holder for holding a fuse.
  • the fuse holder includes a body, a line side connector supported by the body, and a load side connector supported by the body.
  • the fuse holder also includes a toggle switch supported by the body.
  • the switch is capable of toggled engagement in a first position that provides electrical connection between the line side connector and the load side connector.
  • the switch is also capable of toggled engagement in a second position that provides electrical isolation between the line side connector and the load side connector.
  • the fuse holder also includes a fuse carrier.
  • the fuse carrier is supported by the body.
  • the fuse carrier is adapted for holding the fuse and the fuse carrier is adapted to be removed from the fuse holder.
  • the fuse holder also includes a blocking device for blocking the toggled engagement of the switch from the second position to the first position when the fuse carrier is not located within the fuse holder.
  • the blocking device may be adapted to urge the switch from toggled engagement in the first position to toggled engagement in the second position as the fuse carrier is removed from the fuse holder.
  • the fuse holder may be provided wherein the fuse carrier defines a longitudinal axis and wherein the fuse carrier is separable from the body in a direction along the longitudinal axis of the fuse holder.
  • the fuse holder may be provided wherein the switch includes the first portion that pivots from a first position providing electrical connection between the line side connector and the load side connector to the second position providing electrical isolation between the line side connector and the load side connector and wherein the switch includes a second portion that includes a pair of switch contacts that selectively engage and disengage with a pair of body contacts fixedly secured to the body.
  • the second portion is slidably movable with respect to the body. The second portion is operably connected to the first portion.
  • the fuse holder may be provided wherein the blocking device is pivotally mounted in the body.
  • the fuse holder may be provided wherein the fuse carrier defines a longitudinal axis.
  • the fuse being separable from said fuse carrier in a direction normal to the longitudinal axis of said fuse carrier.
  • the fuse holder may further include a first electrical contact for electrical connection with a first end of the fuse and the fuse holder may further include a second electrical contact for electrical connection with a second end of the fuse, opposed to the first end of the fuse.
  • the fuse holder may be adapted to provide for toggled engagement of the switch in the second position prior to the electrical disengagement of at least one of first end of the fuse to the first electrical contact and second end of the fuse to the second electrical contact as the fuse carrier is removed from the fuse holder.
  • the fuse holder may be provided wherein the blocking device has a first position for blocking the removal of the fuse carrier from the body when the switch is in toggled engagement in the first position and wherein the blocking device has a second position for permitting the removal of the fuse carrier from the body when the switch is in toggled engagement in the second position
  • the fuse holder may be provided wherein the blocking device includes a blocking device feature and wherein the fuse holder includes a fuse holder feature for cooperation with the blocking device feature for blocking the removal of the fuse carrier from the body when the switch is in the first position.
  • the fuse holder may be provided wherein the blocking device feature or the fuse holder feature includes a protrusion and wherein the other of the blocking device feature and the fuse holder feature includes a void.
  • the fuse holder may be provided wherein the fuse holder further includes fuse electrical contacts mounted to the body.
  • the contacts have concave engagement surfaces adapted to engage opposed cylindrical electrical contacts of the fuse.
  • the fuse holder may be provided wherein the fuse holder further includes an indicating module for indicating that a fuse is not functioning properly.
  • a fuse holder for holding a fuse.
  • the fuse holder includes a body, a line side connector supported by the body, and a load side connector supported by the body.
  • the fuse holder also includes a toggle switch supported by the body.
  • the switch is capable of toggled engagement in a first position providing electrical connection between the line side connector and the load side connector.
  • the switch is capable of toggled engagement in a second position providing electrical isolation between the line side connector and the load side connector.
  • the fuse holder also includes a fuse carrier supported by the body.
  • the fuse carrier is adapted to hold the fuse and the fuse carrier is adapted to be removed from the fuse holder.
  • the fuse holder also includes a blocking device for blocking the toggled engagement of the switch into the first position when the fuse carrier is not located within the fuse holder.
  • the blocking device may be positioned between the toggle switch and the fuse carrier.
  • the fuse holder may be provided wherein the blocking device is adapted to urge the switch from toggled engagement in the first position to toggled engagement in the second position as the fuse carrier is removed from the fuse holder.
  • the fuse holder may be provided wherein the fuse carrier defines a longitudinal axis and wherein the fuse carrier is separable from the body in a direction along the longitudinal axis of the fuse carrier.
  • the fuse holder may be provided wherein the switch includes a first portion that pivots from the first position providing electrical connection between the line side connector and the load side connector to the second position providing electrical isolation between the line side connector and the load side connector and wherein the switch includes a second portion that includes a pair of switch contacts that may be selected to engage and disengage with a pair of body contacts fixedly secured to the body, the second portion slides with respect to the body, the second portion operably connected to the first portion.
  • the fuse holder may be provided wherein the blocking device is pivotally mounted in the body.
  • the fuse holder may be provided wherein the line side connector includes an electrical contact for electrical connection with a first end of the fuse and wherein the load side connector includes an electrical contact for electrical connection with a second end of the fuse. The second end is opposed to the first end of the fuse. Further, the fuse holder is adapted to provide for toggled engagement of the switch in the second position prior to the electrical disengagement of at least one of first end of the fuse to the line side connector and second end of the fuse to the load side connector as the fuse carrier is removed from the fuse holder.
  • the fuse holder may be provided wherein the blocking device has a first position for blocking the removal of the fuse carrier from the body when the switch is toggled engagement in the first position and wherein the blocking device has a second position for permitting the removal of the fuse carrier from the body when the switch is in toggled engagement in the second position.
  • the fuse holder may be provided wherein the blocking device includes a blocking device feature and wherein the fuse holder includes a fuse holder feature for cooperation with the blocking device feature for blocking the removal of the fuse carrier from the body when the switch is in toggled engagement in the first position.
  • the fuse holder may be provided wherein the blocking device feature or the fuse holder feature includes a protrusion and the other of the blocking device feature and the fuse holder feature includes a void.
  • the fuse holder may be provided wherein the fuse holder further includes fuse electrical contacts mounted to the body.
  • the contacts have concave engagement surfaces adapted to engage opposed cylindrical electrical contacts of the fuse.
  • a method for replacement of a fuse to and from a fuse holder includes the steps of providing a fuse holder, slidably fitting a fuse carrier for holding a fuse in the fuse holder, operably connecting the fuse carrier to a switch having an electrically connected position and an electrically isolated position, and pulling the fuse carrier with a used fuse outwardly from the fuse holder.
  • the method further includes the steps of automatically tripping the switch to the electrically isolated position as the fuse carrier is removed, removing the used fuse from the fuse holder when the fuse carrier is removed from the fuse holder, inserting a new fuse into the fuse holder when the fuse carrier is removed from the fuse holder, and pushing the fuse carrier with a new fuse inwardly into the fuse holder.
  • a fuse holder for holding a fuse.
  • the fuse holder includes a body, a line side connector supported by the body, and a load side connector supported by the body.
  • the fuse holder also includes a fuse carrier supported by the body.
  • the fuse carrier is adapted for holding the fuse and the fuse carrier is adapted to be removed from the fuse holder.
  • the fuse carrier defines a longitudinal axis thereof. The fuse carrier is separable from the body in a direction along the longitudinal axis of the fuse carrier.
  • the fuse holder may further include a switch supported by the body.
  • the switch includes a first position providing electrical connection between the line side connector and the load side connector and includes a second position providing electrical isolation between the line side connector and the load side connector.
  • the fuse holder may be provided wherein the switch includes a toggle switch supported by the body.
  • the switch is capable of toggled engagement in the first position providing electrical connection between the line side connector and the load side connector.
  • the switch is further capable of toggled engagement in the second position providing electrical isolation between the line side connector and the load side connector.
  • the fuse holder further includes a blocking device for blocking the toggled engagement of the switch into the first position when the fuse carrier is not located within the fuse holder.
  • the fuse holder may be provided wherein the blocking device is adapted to urge the switch from toggled engagement in the first position to toggled engagement in the second position as the fuse carrier is removed from the fuse holder.
  • the fuse holder may be provided wherein the switch includes a first portion that pivots from a first position providing electrical connection between the line side connector and the load side connector to a second position providing electrical isolation between the line side connector and the load side connector and wherein the switch includes a second portion that includes a pair of switch contacts that selectively engage and disengage with a pair of body contacts fixedly secured to the body.
  • the second portion is slidably movable with respect to the body.
  • the second portion operably connected to the first portion.
  • the fuse holder may be provided wherein the blocking device is pivotally mounted in the body.
  • the fuse holder may be provided wherein the fuse carrier defines a longitudinal axis.
  • the fuse being separable from said fuse carrier in a direction normal to the longitudinal axis of said fuse carrier.
  • the fuse holder may further include a first electrical contact for electrical connection with a first end of the fuse and the fuse holder may further include a second electrical contact for electrical connection with a second end of the fuse, opposed to the first end of the fuse.
  • the fuse holder may be adapted to provide for toggled engagement of the switch in the second position prior to the electrical disengagement of at least one of first end of the fuse to the first electrical contact and second end of the fuse to the second electrical contact as the fuse carrier is removed from the fuse holder.
  • the fuse holder may be provided wherein the blocking device has a first position for blocking the removal of the fuse carrier from the body when the switch is in toggled engagement in the first position and wherein the blocking device has a second position for permitting the removal of the fuse carrier from the body when the switch is in toggled engagement in the second position.
  • the fuse holder may be provided wherein the blocking device includes a blocking device feature and wherein the fuse holder includes a fuse holder feature for cooperation with the blocking device feature for blocking the removal of the fuse carrier from the body when the switch is in toggled engagement in the first position.
  • the fuse holder may be provided wherein the blocking device feature or the fuse holder feature includes a protrusion and wherein the other of the blocking device feature and the fuse holder feature includes a void.
  • the fuse holder may be provided wherein the fuse holder further includes fuse electrical contacts mounted to the body. The contacts have concave engagement surfaces adapted to engage opposed cylindrical electrical contacts of the fuse.
  • the fuse holder may be provided wherein the fuse carrier further includes an indicating module for indicating that a fuse is not functioning properly.
  • a fuse holder for holding a fuse.
  • the fuse holder includes a body, a line side connector supported by the body, and a load side connector supported by the body.
  • the fuse holder further includes a fuse carrier supported by the body.
  • the fuse carrier is adapted for holding the fuse and the fuse carrier is adapted to be removed from the fuse holder.
  • the fuse carrier defines a longitudinal axis. The fuse carrier is separable from the body in a direction along the longitudinal axis of the fuse carrier.
  • the fuse holder may further include a pivoting switch supported by the body.
  • the switch includes a first position providing electrical connection between the line side connector and the load side connector and a second position providing electrical isolation between the line side connector and the load side connector.
  • the fuse holder may be provided wherein the switch includes a toggle switch supported by the body.
  • the switch is capable of toggled engagement in a first position providing electrical connection between the line side connector and the load side connector.
  • the switch is capable of toggled engagement in a second position providing electrical isolation between the line side connector and the load side connector.
  • the fuse holder further includes a blocking device for blocking the toggled engagement of the switch into the first position when the fuse carrier is not located within the fuse holder.
  • the fuse holder may be provided wherein the blocking device is adapted to switch the switch from toggled engagement in the first position to toggled engagement in the second position as the fuse carrier is removed from the fuse holder.
  • the fuse holder may be provided wherein the switch includes a first portion that pivots from a first position providing electrical connection between the line side connector and the load side connector to a second position providing electrical isolation between the line side connector and the load side connector and wherein the switch includes a second portion that includes a pair of switch contacts that selectively engage and disengage with a pair of body contacts fixedly secured to the body.
  • the second portion is slidably movable with respect to the body. The second portion is operably connected to the first portion.
  • the fuse holder may be provided wherein the blocking device is pivotally mounted in the body.
  • the fuse holder may be provided wherein the fuse carrier defines a longitudinal axis.
  • the fuse being separable from said fuse carrier in a direction normal to the longitudinal axis of said fuse carrier.
  • the fuse holder may be provided wherein the line side connector includes an electrical contact for electrical connection with a first end of the fuse and wherein the load side connector includes an electrical contact for electrical connection with a second end of the fuse. The second end is opposed to the first end of the fuse. Further, the fuse holder is adapted to provide for toggled engagement of the switch in the second position prior to the electrical disengagement of at least one of first end of the fuse to the line side connector and second end of the fuse to the load side connector as the fuse carrier is removed from the fuse holder.
  • the fuse holder may be provided wherein the blocking device has a first position for blocking the removal of the fuse carrier from the body when the switch is in toggled engagement in the first position and wherein the blocking device has a second position for permitting the removal of the fuse carrier from the body when the switch is in toggled engagement in the second position.
  • the fuse holder may be provided wherein the blocking device includes a blocking device feature and wherein the fuse holder includes a fuse holder feature for cooperation with the blocking device feature for blocking the removal of the fuse carrier from the body when the switch is in toggled engagement in the first position.
  • the fuse holder may be provided wherein the blocking device feature or the fuse holder feature includes a protrusion and wherein the other of the blocking device feature and the fuse holder feature includes a void.
  • the fuse holder may be provided wherein the fuse holder further includes fuse electrical contacts mounted to the body.
  • the contacts having concave engagement surfaces adapted to engage opposed cylindrical electrical contacts of the fuse.
  • a fuse carrier for use with a fuse holder.
  • the fuse holder has a toggle switch for selectively providing an electrical isolation and an electrical connection between a line side connector and a load side connector.
  • the fuse carrier includes a fuse carrier body defining an opening thereof adapted for receiving the fuse.
  • the fuse carrier body defines a feature for cooperation with the switch for urging the switch from toggled engagement in the first position to toggled engagement in the second position as the fuse carrier is removed from the fuse holder.
  • a fuse carrier for use with a fuse holder and a blown fuse indicator.
  • the fuse carrier includes a fuse carrier body defining an opening thereof adapted for receiving the fuse.
  • the fuse carrier body further defines a feature adapted to secure the blown fuse indicator to the fuse carrier body.
  • the fuse carrier may be provided wherein the fuse carrier is further adapted for use in a fuse holder having a toggle switch for selectively providing toggled engagement in a first position providing an electrical connection and toggled engagement in a second position providing an electrical isolation between a line side connector and a load side connector.
  • the fuse carrier body defines a feature for cooperation with the switch that urges the switch into toggled engagement in the first position when the fuse carrier is in position in the fuse holder.
  • the fuse carrier may be provided wherein the blown fuse indicator is removably securable to the fuse carrier body.
  • a fuse holder for holding a fuse.
  • the fuse holder includes a body, a line side connector supported by the body, and a load side connector supported by the body.
  • the fuse holder also includes a blown fuse indicator for determining whether the fuse is functioning properly or is blown, and a fuse carrier supported in the fuse holder.
  • the fuse carrier is adapted for use with the fuse holder and the blown fuse indicator.
  • the fuse carrier has a fuse carrier body.
  • the fuse carrier body defines an opening of the body that is adapted for receiving the fuse.
  • the fuse carrier body further defines a feature adapted to secure the blown fuse indicator to the fuse carrier.
  • the fuse holder may further include a switch supported by the body.
  • the switch includes a first position providing electrical connection between the line side connector and the load side connector and includes a second position providing electrical isolation between the line side connector and the load side connector.
  • the fuse holder may be provided wherein the switch includes a toggle switch supported by the body.
  • the switch is capable of toggled engagement in the first position providing electrical connection between the line side connector and the load side connector.
  • the switch is capable of toggled engagement in the second position providing electrical isolation between the line side connector and the load side connector.
  • the fuse holder further includes a blocking device for blocking the toggled engagement of the switch into the first position when the fuse carrier is not located within the fuse holder.
  • the fuse holder may be provided wherein the blocking device is adapted to urge the switch from toggled engagement in the first position to toggled engagement in the second position as the fuse carrier is removed from the fuse holder.
  • the fuse holder may be provided wherein the switch includes a first portion that pivots from the first position providing electrical connection between the line side connector and the load side connector to the second position providing electrical isolation between the line side connector and the load side connector and wherein the switch includes a second portion that includes a pair of switch contacts that selectively engage and disengage with a pair of body contacts fixedly secured to the body.
  • the second portion is slidably movable with respect to the body. The second portion is operably connected to the first portion.
  • the fuse holder may be provided wherein the blocking device is pivotally mounted in the body.
  • the fuse holder may be provided wherein the fuse carrier defines a longitudinal axis.
  • the fuse being separable from said fuse carrier in a direction normal to the longitudinal axis of said fuse carrier.
  • the fuse holder may further include a first electrical contact for electrical connection with a first end of the fuse and the fuse holder may further include a second electrical contact for electrical connection with a second end of the fuse, opposed to the first end of the fuse.
  • the fuse holder may be adapted to provide for toggled engagement of the switch in the second position prior to the electrical disengagement of at least one of first end of the fuse to the first electrical contact and second end of the fuse to the second electrical contact as the fuse carrier is removed from the fuse holder.
  • the fuse holder may be provided wherein the blocking device has a first position for blocking the removal of the fuse carrier from the body when the switch is in toggled engagement in the first position and wherein the blocking device has a second position for permitting the removal of the fuse carrier from the body when the switch is in toggled engagement in the second position.
  • the fuse holder may be provided wherein the blocking device comprises a blocking device feature and wherein the fuse holder comprises a fuse holder feature for cooperation with the blocking device feature for blocking the removal of the fuse carrier from the body when the switch is in toggled engagement in the first position.
  • the fuse holder may be provided wherein one of the blocking device feature and the fuse holder feature includes a protrusion and wherein the other of the blocking device feature and the fuse holder feature includes a void.
  • the fuse holder may be provided wherein the fuse holder further includes fuse electrical contacts mounted to the body, the contacts having concave engagement surfaces adapted to engage opposed cylindrical electrical contacts of the fuse.
  • the fuse holder may be wherein the fuse carrier is separable from the body in a direction along the longitudinal axis of the fuse carrier.
  • the fuse holder may be provided wherein the blown fuse indicator is removably securable to the fuse carrier body.
  • a fuse holder kit for use with a fuse includes a fuse holder, a first fuse carrier supportable at least partially in the fuse holder and adapted to hold a first fuse, and a second fuse carrier.
  • the second fuse carrier is supportable at least partially in the fuse holder and adapted to hold a second fuse.
  • the fuse holder and the first fuse carrier provide a first fuse holder assembly with a first configuration and the fuse holder and the second fuse carrier provide a second first fuse holder assembly with a second configuration.
  • the first configuration and the second configuration have at least one physical difference from each other.
  • the fuse holder kit may further include a blown fuse indicator.
  • the blown fuse indicator is operable associable with at least one of the first fuse carrier and the second fuse carrier.
  • the fuse holder kit may be provided wherein the first fuse carrier defines a fuse carrier body having a blown fuse indicator receiving area for receiving at least a portion of the blown fuse indicator.
  • the fuse holder kit may be provided wherein the blown fuse indicator is fixedly secured to the first fuse carrier and wherein the first fuse carrier has a fuse carrier body thereof.
  • the fuse carrier body defines an opening thereof adapted for receiving the first fuse.
  • the fuse carrier body further defines a feature adapted to secure the blown fuse indicator to the fuse carrier.
  • the fuse holder kit may be provided wherein the blown fuse indicator may be removably secured to the first fuse carrier, whereby a blown fuse indicator may be replaced while not replacing the first fused carrier.
  • the fuse holder kit may be provided wherein the second fuse carrier is not adapted for receiving at least a portion of the blown fuse indicator, whereby the kit may be used to provide both fuse holders with a blown fuse indicator and fuse holders without a blown fuse indicator.
  • Figure 1 is a plan view of a fuse panel in which the fuse holder of the present invention may be housed;
  • Figure 2 is a perspective view a fuse holder according to an embodiment of the present invention.
  • Figure 3 a cross sectional view the fuse holder of Figure 2 with the fuse holder in the electrically open position and the fuse and fuse carrier in position in the fuse holder;
  • Figure 4 a cross sectional view the fuse holder of Figure 2 with the fuse holder in the electrically closed position and the fuse and fuse carrier in position in the fuse holder;
  • Figure 5 a cross sectional view the fuse holder of Figure 2 with the fuse holder in the electrically closed position with the fuse and fuse carrier removed;
  • Figure 6 a cross sectional view the fuse holder of Figure 2 with the fuse holder in the electrically open position with the fuse and fuse carrier removed;
  • Figure 7 is a plan view of the fuse and fuse carrier for use with the fuse holder of Figure 2;
  • Figure 8 is a perspective view of the fuse and fuse carrier of Figure
  • Figure 9 is another perspective view of the fuse and fuse carrier of Figure 6 showing the fuse presence indicator
  • Figure 10 is yet another perspective view of the fuse and fuse carrier of Figure 6 showing the fuse presence indicator in greater detail;
  • Figure 11 is a perspective view of a kit of fuse holders and fuse carriers according to another embodiment of the invention.
  • Figure 12 is a flow chart of another embodiment of the present invention in the form of a method for using a fuse holder.
  • Fuses are regularly used in electrical circuits to provide protection for electrical components from electrical overloads. Fuses are for example used in electrical transmission equipment to provide protection for electrical components from electrical surges originating from the power line or from excessive electrical loads. Replaceable fuses are often used. These replaceable fuses are often placed in electrical boxes or fuse boxes. The electrical boxes or fuse boxes may be located where they are not easily accessed, and may be mounted in any orientation where space permits.
  • the fuses may need to be safely replaced without disenabling the power in the line. Once removed, it may be discovered that a replacement fuse is not available which may necessitate that access to a hot power line may need to be prevented when the fuse is not in the holder.
  • fuses are quite large and need to be inserted easily and safely into the fuse box, while not contacting the hot power line.
  • the fuse boxes for these large fuses may accommodate may fuses and are inherently large. Minimizing the size of these fuse boxes may result in making access to the fuses more difficult, as sufficient space between adjacent fuses, to allow for manual access into the box, may be compromised.
  • a fuse holder 2 is shown.
  • the fuse holder 2 is for use in electrical circuits where circuit protection is desired.
  • the fuse holder 2 is well suited for use with electrically sensitive equipment where fast acting fuses are desired to provide such protection to sensitive equipment. It should be appreciated that the fuse holder 2 may be used wherever circuit protection is desired.
  • the fuse holder 2 may be installed in, for example, a fuse or panel box 4.
  • the panel box 4 may house a control system 6, which includes a controller 8.
  • the controller 8 is in the form of Programmable Logic Controller (PLC), a microprocessor, a micro controller or other controller.
  • the control system 6 may further include a main disconnect 10 electrically connected to the controller 8.
  • the main disconnect 10 is electrically connected to a power distribution block 12.
  • the power distribution block 12 may be electrically connected to the fuse holder 2.
  • the control system 6 includes a series of fuse holders 2 that are electrically connected to electrical devices (not shown) that the fuse holders 2 electrically protect.
  • the fuse holder 2 for holding a fuse 14 is shown.
  • the fuse holder 2 includes a body 16, a line side connector 18 supported by the body 16, and a load side connector 20 supported by the body 16.
  • the fuse holder 2 also includes a toggle switch 22 supported by the body 16.
  • the switch 22 is capable of toggled engagement in a first position 24, as shown in Figure 4, providing electrical connection between the line side connector 18 and the load side connector 20.
  • the switch 22 is also capable of toggled engagement in a second position 26, as shown in Figure 5, providing electrical isolation between the line side connector 18 and the load side connector 20.
  • the fuse holder 2 also includes a fuse carrier 28.
  • the fuse carrier 28 is supported by the body 16.
  • the fuse carrier 28 is adapted for holding the fuse 14 and the fuse carrier 28 is adapted to be removed from the fuse holder 2.
  • the fuse holder 2 also includes a blocking device 30 for blocking the toggled engagement of the switch 22 from the second position 26 to the first position 24 when the fuse carrier 28 is not located within the fuse holder 2.
  • the body 16 may be made of any suitable durable material.
  • the body 16 may be made of an electrically non-conductive material.
  • the body 16 may be made of a polymer, for example, a thermoplastic.
  • the body may be made of a nylon polymer, and may be glass-filled.
  • the body 16 may be made by any suitable process and may be molded, for example.
  • the body 16 may be of unitary construction or may be made of multiple pieces or portions.
  • the body 16 may be molded and made of two pieces or halves 32, each half being molded.
  • the other components of the holder may be fitted in cavities 34 formed in the pieces 32.
  • the pieces 32 may be fitted together by any suitable process, for example by gluing or by ultrasonic welding.
  • the body 16 may include protruding walls 36 and curved supports 38 to support and guide the other components in the holder 2.
  • the body 16 may also include connectors 40 for connecting the halves 32 together.
  • the connectors 40 are in the form of cylinders, which may be hollow. Corresponding connectors 40 in the halves may matingly fit together.
  • the line side connector 18 and the load side connector 20 may have any shape and construction capable of receiving an electrical lead (not shown) in the form of a wire, solid or stranded, or an electrical lead connector (not shown).
  • the line side connector 18 and the load side connector 20 may be similar or identical in construction and may include a threaded fastener 42 to urge conductive surfaces 44 together to contact the electrical leads.
  • the line side connector 18 and the load side connector 20 may be secured in the cavities 34 of the body 16 positioned between adj acent protruding walls 36.
  • the fuse holder 2 For proper use of the fuse holder 2, the fuse holder 2 should be manually toggled from the on position 24 to the off position 26 prior to any attempt to remove the fuse carrier 28. Doing so provides for the minimal wear of the components of the fuse holder 2. However, if an operator attempts to pull a fuse carrier 28 from the fuse holder 2, to reduce the adverse consequences of such improper use and according to another aspect of the present invention, the blocking device 30 may be adapted to urge the switch 22 from toggled engagement in the first position 24 to toggled engagement in the second position 26 as the fuse carrier 28 is removed from the fuse holder 2.
  • the switch 22 may be any device capable of interacting with the blocking device 30 and with the fuse carrier 28 to provide toggled engagement in a first position 24, providing electrical connection between the line side connector 18 and the load side connector 20, and capable of providing toggled engagement in a second position 26, providing electrical isolation between the line side connector 18 and the load side connector 20.
  • the fuse holder 2 may be provided wherein the switch 22 includes a first portion 45.
  • the first portion 45 includes an arm or lever 47.
  • the first portion 45 as shown, may include a central opening 48 that is pivotally fitted to one of the connectors 40.
  • the first portion 45 may pivot from the first position 24, shown in Figure 4, to the second position 26, shown in Figure 3.
  • the switch 22 may further include a second portion 50 that includes a pair of switch contacts 51 that may be selected to engage and disengage with a pair of body contacts 52 fixedly secured to the body 16 of the holder 2.
  • the second portion 50 slides with respect to the body 2. As shown in Figures 3-6 the second portion 50 slides along longitudinal axis 53 of second portion 50 of switch 22, restrained by protruding walls 36 formed in the body 16 of holder 2.
  • the second portion 50 as shown, is urged upwardly in the direction of arrow 54 by spring 55.
  • the second portion 50 is operably connected to the first portion 45.
  • the switch 22 includes a connecting rod 56.
  • the connecting rod 56 includes ends 57 that are pivotally fitted into the first portion 45 and the second portion 50, respectively.
  • the switch 22 provides electrical connection between the line side connector 18 and the load side connector 20 when the switch is in the first position 24. As shown in Figure 3, the switch 22 provides electrical isolation between the line side connector 18 and the load side connector 20 when the switch is in the second position 26.
  • the blocking device 30 may be any device capable of interacting with the switch 22 and with the fuse carrier 28.
  • the blocking device 30 includes a plate shaped cam 58 rotatable secured to the body 16 of the holder 2.
  • the cam 58 may include a central opening 60 that is pivotally fitted to one of the connectors 40.
  • the cam may be biased counterclockwise in the direction of arrow 61 by spring 62.
  • the cam 58 may define a void or cylindrical pocket 64 for cooperating with the fuse carrier 28 and an arm 65 for limiting the pivoting of the cam as it contacts protruding wall 36. Note that the arm 65 is in a different plane than the first portion 45 of the switch and does not cooperate with the switch 22.
  • the cam may further define a cam high point or protuberance 66 for cooperation with the switch 22.
  • This blocking may be accomplished in any suitable manner.
  • the cam 58 is biased in the direction of arrow 61 by spring 62, causing the arm 65 of cam 58 to lodge into protruding wall 36 of body 16 of holder 2, limiting the rotation of the blocking device 30 in the direction of arrow 61.
  • leg 68 of first portion 45 of switch 22 engages the protuberance 66 of cam 58 of blocking device 30, limiting the movement of the first portion 45 of the switch 22 in the direction of arrow 67.
  • the upper end 57 of the connecting rod 56 is to the left of the longitudinal axis 53 of the second portion 50 and to the left of rotational axis 70 of the first portion 45 of switch 22.
  • the spring 55 is selected to have a spring force sufficient to rotate the first portion 45 of switch 22 in a clockwise direction opposed to arrow 67 to the second or off position 26 of switch 22, as shown in Figure 6.
  • an operator may, even though it is not recommended, attempt to rotate the switch 22 to the on position when the fuse carrier 28 is not in the fuse holder 2.
  • the line side fuse electrical contact 72 may touch the load side fuse electrical contact 74 while the operator is pushing the switch toward to on position. As soon as the operator releases the switch 22 the switch returns to the off position 26.
  • the fuse holder 2 may be provided wherein the fuse carrier 28 defines a longitudinal axis 71 and wherein the fuse carrier 2 is separable from the body 16 of the holder 2 in a direction along the longitudinal axis 71 of the fuse carrier 28.
  • This separation configuration for the carrier 28 permits the fuse holder to be smaller than other configurations, particularly in width and length (the directions normal to the longitudinal axis 71). Further, this configuration is simple and rugged.
  • the fuse holder 2 may be provided wherein the line side connector 18 includes a line side fuse electrical contact 72 for electrical connection with a first end 73 of the fuse 14 and wherein the load side connector 20 includes a load side fuse electrical contact 74 for electrical connection with a second end 75 of the fuse 14. The second end 75 is opposed to the first end 73 of the fuse 14.
  • the fuse holder 2 and the blocking device 30 may be adapted to provide for toggled engagement of the switch 22 in the second or off position 26 prior to the electrical disengagement of at least one of first end 73 of the fuse 14 to the line side connector 18 and second end of the fuse 14 to the load side connector 20 as the fuse carrier 28 is removed from the fuse holder 2.
  • This toggled engagement of the switch 22 in the second or off position 26 prior to the electrical disengagement of the fuse 14 may be accomplished by any configuration capable of providing such engagement.
  • the biasing device 30 rotates in the direction of arrow 61 urging the first portion 45 of the switch 22 in the direction opposed to arrow 67, causing the switch to flip from the position in Figure 5 to the position in Figure 3, placing the switch 22 in the second or off position 26.
  • the switch 22 will be toggled to the second or off position 26 prior to the electrical disengagement of at least one of first end 73 of the fuse 14 to the line side connector 18 and second end of the fuse 14 to the load side connector 20 as the fuse carrier 28 is removed from the fuse holder 2.
  • This configuration will minimize electrical arching between the contacts 72 and 74 and the ends 73 and 75 of the fuse 14, respectively.
  • the contacts 72 and 74 may have any configuration.
  • the contacts 72 and 74 may have concave engagement surfaces 69 adapted to engage opposed cylindrical or convex electrical contacts 63 of the fuse 14.
  • the fuse holder 2 may be provided wherein the blocking device 30 has a first position 79 for blocking the removal of the fuse carrier 28 from the body 16 when the switch 22 is in toggled engagement in the first position 24 and wherein the blocking device 30 has a second position 80 for permitting the removal of the fuse carrier 28 from the body 16 when the switch 22 is in toggled engagement in the second position 80.
  • fuse holder and the blocking device may have several configurations to accomplish the above-described first and second positions 79 and 80, respectively.
  • the blocking device 30, as shown in Figure 3 has a first position 79 for permitting the removal of the fuse carrier 28 from the body 16 when the switch 22 is in toggled engagement in the second or off position 26.
  • the spring 62 of the blocking device 30 urges the arm 65 of the blocking device 30 into engagement with the protruding wall 36 of the body 16 of the fuse holder 2.
  • the void or cylindrical pocket 64 of the blocking device is rotated in the direction of arrow 61, out of engagement with the fuse carrier 28.
  • the spring 55 of the switch 22 urges the first portion 45 of the switch 22 in the direction opposed to arrow 67 to the second or off position 26. This configuration permits removal of the fuse holder 2 when the switch 22 is in the second or off position 26.
  • the blocking device 30, as shown in Figure 4 has a second position 80 for blocking the removal of the fuse carrier 28 from the body 16 when the switch 22 is in toggled engagement in the first or on position 24.
  • the spring 62 of the blocking device 30 urges the protuberance 66 of the blocking device 30 into engagement with the arm 47 of the first portion 45 of the switch 22.
  • the spring 55 of the switch 22 urges the arm 47 of the first portion 45 of the switch 22 into engagement with the protuberance 66 of the blocking device 30.
  • This configuration blocks removal of the fuse holder when the switch 22 is in the first or on position 24.
  • the fuse holder 2 may be provided wherein the blocking device 30 includes blocking device feature 64 and wherein the fuse holder 28 includes a fuse carrier feature 82 for cooperation with the blocking device feature 64 for blocking the removal of the fuse carrier 28 from the body 2 when the switch 22 is in the first position 24.
  • the blocking device feature 64 and the fuse carrier feature 82 may be designed to be any cooperating features such as voids and protrusion, mating parts, for examples gears (not shown). As shown in Figures 3-6, the blocking device feature 64 is in the form of a void, for example a cylindrical pocket, and the fuse carrier feature 82 is in the form of a protrusion, for example a convex or cylindrical protrusion.
  • the fuse holder 2 may be provided wherein the fuse holder 2 further includes an indicating module 84 for indicating that a fuse 14 is not functioning properly.
  • the indicating module 84 may include an indicator 85 that indicates when the fuse 14 is not functioning properly.
  • the indicator 85 may be an illumination device.
  • the indication module 84 may have a body 86 form which a load side electrical lead 87 and a line side electrical lead 88 extend.
  • the body may house an electrical circuit 89.
  • the electrical circuit 89 may have very high resistance such that when the fuse is blown a very low leakage current will pass through the circuit 89 of the indicating module 84, illuminating the indicator 85.
  • a method 100 for replacement of a fuse to and from a fuse holder includes step 110 of providing a fuse holder and step 112 of slidably fitting a fuse carrier for holding a fuse in the fuse holder.
  • the method also includes step 114 of operably connecting the fuse carrier to a switch having an electrically connected position and an electrically isolated position, and step 1 16 of pulling the fuse carrier with a used fuse outwardly from the fuse holder.
  • the method further includes step 118 of automatically tripping the switch to the electrically isolated position as the fuse carrier is removed and step 120 of removing the used fuse from the fuse holder when the fuse carrier is removed from the fuse holder.
  • the method further includes step 122 of inserting a new fuse into the fuse holder when the fuse carrier is removed from the fuse holder and step 124 of pushing the fuse carrier with a new fuse inwardly into the fuse holder.
  • fuse carrier 28 for use with fuse holder 2 is provided.
  • the fuse holder 2 has a toggle switch 22 for selectively providing an electrical isolation and an electrical connection between a line side connector 18 and a load side connector 20.
  • the fuse carrier 28 includes a fuse carrier body 90 defining an opening 91 thereof adapted for receiving the fuse 14.
  • the fuse holder 2 For proper use of the fuse holder 2, the fuse holder 2 should be manually toggled from the on position 24 to the off position 26 prior to any attempt to remove the fuse carrier 28. Doing so provides for the minimal wear of the components of the fuse holder 2. However, if an operator attempts to pull a fuse carrier 28 from the fuse holder 2, to reduce the adverse consequences of such improper use and according to another aspect of the present invention, the fuse carrier body 90 defines a fuse holder feature 82 for cooperation with the switch 22 for urging the switch 22 from toggled engagement in the first position 24 to toggled engagement in the second position 26 as the fuse carrier 28 is removed from the fuse holder 2.
  • fuse carrier 28 for use with fuse holder 2 and indication module or blown fuse indicator 84 is provided.
  • the fuse carrier 28 includes fuse carrier body 90 defining opening 91 thereof adapted for receiving the fuse 14.
  • the fuse carrier body 90 further defines feature (for example a portion of body wall 92 adapted to secure the blown fuse indicator 84 to the fuse carrier body 90.
  • the fuse carrier 28 may be provided wherein the fuse carrier 28 is further adapted for use in fuse holder 2 having a toggle switch 22 for selectively providing toggled engagement in first position 24 providing an electrical connection and toggled engagement in second position 26 providing an electrical isolation between line side connector 18 and load side connector 20.
  • the fuse carrier body 90 defines a feature 82 for cooperation with the switch 22 (through the void 64 of the blocking device 30) for urging the switch 22 into toggled engagement in the first position 24 when the fuse carrier is in position in the fuse holder. Note that when the operator moves the switch 22 from the first or on position 24, as shown in Figure 4, to the second or off position 26, as shown in Figure 5, the spring 55 biases the switch 22 to stay in the off position 26.
  • the fuse carrier 28 may be provided wherein the blown fuse indicator or indication module 84 is removably securable to the fuse carrier body 90. While such modularity or ability to remove the module 84 may be accomplished in any suitable manner, for example and as shown in Figure 10, the fuse carrier body 90 may have retention tabs 93 in body wall 90 so that the module 84 may be secured to the carrier 28 while being easily installed and removed from the carrier 28.
  • a fuse holder kit 200 for use with a fuse includes a first fuse holder 202, a first fuse carrier 204 supportable at least partially in the fuse holder 202 and adapted to hold a first fuse 206, and a second fuse carrier 208.
  • the first fuse holder 202 is similar to the fuse holder 2 of Figures 2-10.
  • the first fuse carrier 204 and the second fuse carrier are similar to the fuse carrier 28 of Figures 2-10.
  • the first fuse 206 and the second fuse are similar to the fuse 14 of Figures 2-10.
  • the second fuse carrier 208 is supportable at least partially in the first fuse holder 202 and adapted to hold a second fuse 210.
  • the first fuse holder 202 and the first fuse carrier 204 provide a first fuse holder assembly 212 with a first configuration 214 and the first fuse holder 202 and the second fuse carrier 208 provide a second fuse holder assembly 216 with a second configuration 218.
  • the first configuration 214 and the second configuration 218 have at least one physical difference from each other.
  • the first fuse 206 and the second fuse 210 may have different amperage ratings and may have different lengths or diameters.
  • the fuse holder kit 200 may further include a blown fuse indicator 220.
  • the blown fuse indicator 220 is similar to the blown fuse indicator 84 of Figures 2-10.
  • the blown fuse indicator 220 is operable associable with at least one of the first fuse carrier 204 and the second fuse carrier 208.
  • the fuse holder kit 200 may be provided wherein the first fuse carrier 204 defines a fuse carrier body 222 having a blown fuse indicator receiving area 224 for receiving at least a portion of the blown fuse indicator 220.
  • the fuse holder kit 200 may be provided wherein the blown fuse indicator 220 is fixedly secured to the first fuse carrier 204 and wherein the first fuse carrier 204 has first fuse carrier body 222.
  • the first fuse carrier body 222 defines an opening 226 adapted for receiving the first fuse 206.
  • the first fuse carrier body 222 further defines a feature 228 adapted to secure the blown fuse indicator 220 to the first fuse carrier 204.
  • the fuse holder kit 200 may be provided wherein the blown fuse indicator 220 may be removably secured to the first fuse carrier 204, whereby a blown fuse indicator may be replaced while not replacing the first fuse carrier 204.
  • the fuse holder kit 200 may be provided wherein the second fuse carrier 208 is not adapted for receiving at least a portion of the blown fuse indicator 220, whereby the kit 200 may be used to provide both fuse holders with a blown fuse indicator and fuse holders without a blown fuse indicator.
  • the methods, systems, and apparatus described herein facilitate efficient and economical manufacturing and use of a fuse holder and fuse carrier that is utilized in a circuit or fuse box. Exemplary embodiments of methods, systems, and apparatus are described and/or illustrated herein in detail.
  • Described herein are exemplary methods, systems, and devices utilizing a simple, efficient apparatus to contain for operation and, when needed, to replace a fuse.
  • the methods, system and apparatus described herein may be used in any suitable application. However, they are particularly suited for electrical circuits where load protection is desired.
  • fuse holder, fuse carrier and method are described above in detail.
  • the fuse holder, fuse carrier and method are not limited to the specific embodiments described herein, but rather, components of the systems may be utilized independently and separately from other components described herein.
  • the components may also be used in combination with other machine systems, methods, and apparatuses, and are not limited to practice with only the systems and apparatus as described herein. Rather, the exemplary embodiments can be implemented and utilized in connection with many other applications.

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  • Fuses (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

L'invention concerne un porte-fusible destiné à maintenir un fusible, comprenant un corps, un connecteur côté ligne supporté par le corps, et un connecteur côté charge supporté par le corps. Le porte-fusible comprend également un interrupteur à bascule supporté par le corps et capable d'être mis en prise par basculement dans une première position qui réalise une connexion électrique. Le commutateur peut également être mis en prise par basculement dans une deuxième position qui réalise une isolation électrique entre le connecteur côté ligne et le connecteur côté charge. Le porte-fusible comprend également un support de fusible. Le support de fusible est supporté par le corps et conçu pour maintenir le fusible, et le support de fusible est conçu pour être retiré du porte-fusible. Le porte-fusible comprend un dispositif de blocage qui bloque la mise en prise par basculement du commutateur de la deuxième position à la première position lorsque le support de fusible ne se trouve pas à l'intérieur du porte-fusible.
PCT/US2017/037480 2016-06-15 2017-06-14 Porte-fusible, support et procédé associé Ceased WO2017218673A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/309,363 US11456143B2 (en) 2016-06-15 2017-06-14 Fuse holder, carrier and associated method

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US15/182,743 2016-06-15
US15/182,717 2016-06-15
US15/182,743 US10068737B2 (en) 2016-06-15 2016-06-15 Fuse holder and carrier
US15/182,717 US10249465B2 (en) 2016-06-15 2016-06-15 Fuse holder, carrier and associated method

Publications (1)

Publication Number Publication Date
WO2017218673A1 true WO2017218673A1 (fr) 2017-12-21

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999028936A1 (fr) * 1997-12-04 1999-06-10 Fabryka Aparatów Elektrycznych Fael Sp. Z O.O. Sectionneur de fusibles
US6717505B1 (en) * 1999-11-23 2004-04-06 Klaus Bruchmann Circuit protection unit with fuse carrier and fuse status indicator
KR100638648B1 (ko) * 2006-01-19 2006-10-31 이경희 콘트롤 전원 스위치장치
US20120068808A1 (en) * 2004-09-13 2012-03-22 Darr Matthew R Fusible switching disconnect modules and devices
US20160126047A1 (en) * 2014-10-31 2016-05-05 Klaus Bruchmann Gmbh Multi-pole switch-fused arrangement for busbar systems

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999028936A1 (fr) * 1997-12-04 1999-06-10 Fabryka Aparatów Elektrycznych Fael Sp. Z O.O. Sectionneur de fusibles
US6717505B1 (en) * 1999-11-23 2004-04-06 Klaus Bruchmann Circuit protection unit with fuse carrier and fuse status indicator
US20120068808A1 (en) * 2004-09-13 2012-03-22 Darr Matthew R Fusible switching disconnect modules and devices
KR100638648B1 (ko) * 2006-01-19 2006-10-31 이경희 콘트롤 전원 스위치장치
US20160126047A1 (en) * 2014-10-31 2016-05-05 Klaus Bruchmann Gmbh Multi-pole switch-fused arrangement for busbar systems

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