TWM635746U - An electrical operation mechanism improvement device of molded case circuit breaker - Google Patents

Abstract

The invention is an improvement device of molded case circuit breaker(MCCB) with electrical operating mechanism. It can be widely used in molded case circuit breaker of different styles and specifications, and is not limited by brand model. Also, this improved device allows MCCB to have the reset function. After trip action, MCCB can return to the closed position by electrical operation. Use built-in or external power supply operations to improve the safety of electricity consumption.

Description

Improvement device for electric operating mechanism of molded case circuit breaker

This invention creates an improved device for the electric operating mechanism of the molded case circuit breaker, which can improve the existing technology. The electric operating mechanism of the circuit breaker cannot be widely used in various brands, specifications, poles and other restrictions. The improved mechanism can make the molded case circuit breaker It has a reset function, which solves the problem that all current brand circuit breakers cannot automatically reset and then switch on after tripping. The improved power supply method achieves economy and can have internal keys or external energy storage to improve power safety.

In the conventional technology, there are about tens of thousands of manufacturers of molded case circuit breakers in the world, and the brands are complicated, such as American regulations, European regulations, and Japanese regulations...the appearance and structure are different. , different types, so the fixed dimensions of each of its electric operating mechanisms are also all different, so this electric operating mechanism has no commonality at all, and all electric manipulator products in the prior art cannot solve the above-mentioned common problems.

In the conventional art, the molded case circuit breakers can generally be divided into general circuit breakers due to different places of use, different power system circuits, different copper bars or cables used for lines, different lengths resulting in different impedances, and different protected equipment. Circuit breakers and leakage circuit breakers, industrial circuit breakers and lamp plug circuit breakers, DC circuit breakers and AC circuit breakers, etc., each circuit breaker All are different, and each electric operating mechanism is also different, that is, there is no commonality. In the prior art, there is no electric operating device product that can solve the above-mentioned common problems.

In the conventional art, because of the different equipment used in the molded case circuit breaker, whether it is a general circuit breaker or an earth leakage circuit breaker, it is generally divided into single-pole, double-pole, three-pole, four-pole, Multi-pole circuit breakers, that is, used in single-phase, two-phase, three-phase, three-phase four-wire and other power circuit systems, special purposes, etc., generally all products on the market around the world, its molded case circuit breaker The electric operating mechanism in the circuit is generally only used for three-pole circuit breakers, and most of the electric operating mechanisms for single-pole, double-pole, and multi-pole circuit breakers are not manufactured by manufacturers in the world. One is all special-purpose, can't be universal, and all products in the prior art can't solve above-mentioned common problem.

In the conventional technology, the power supply voltage of the molded case circuit breaker is different because of the different power supply methods of the power system, because the generator is different, the power transmission and distribution are different, the transformer used is different, etc., and even because the backup power supply The power supply voltage of each country in the world is also completely different, so that the electric operating mechanism of the molded case circuit breaker has completely different specifications due to the different power supply voltage. The above factors cause the motor inside the electric operating mechanism There will be no commonality at all, and in the prior art, there is no product that can solve the above-mentioned common problems.

In the conventional art, the electric operating mechanism of the molded case circuit breaker is different because of the different transformers used in the power circuit system and the control power supply of the appliance. Different, the selection will be different, and the functions of the AC and DC power supply methods are also completely different, and any parameter change will affect the electric operation. The selection of specifications in the operating mechanism is different, and the above problems are also that any product in the prior art cannot solve the above problems.

In the conventional technology, the electric operating mechanism of the molded case circuit breaker currently on the market is installed directly above the circuit breaker, and there are only two actions: closing ON, opening and closing OFF, so when the power circuit When an accident occurs in the system whether it is a fault on the line or the use of equipment or loads, the tripping mechanism inside the circuit breaker will trip, and at this time the electric operating mechanism of the molded case circuit breaker will be disabled and cannot be used It is also a common problem that the circuit breaker automatically resets to the RESET to OFF state by the electric method, so that the closing ON or opening OFF action cannot be performed.

In the conventional technology, the tripping mechanism inside the general molded case circuit breaker and the linking part of the circuit breaker mechanism generally have a trip tripping release. When the two are connected together, the circuit breaker can The circuit breaker is turned ON or OFF by an external force (such as the operating handle of the circuit breaker). The tripping release and the internal mechanism of the circuit breaker are connected to each other, so that the circuit breaker can perform the action of closing ON or opening and breaking OFF, and the circuit breaker wants to return to action because of the spring inside the circuit breaker. It must be actuated by a large force, so the electric operating mechanism of the molded case circuit breaker in the prior art can only electrically drive the circuit breaker to close ON or open and close the two actions under normal conditions. When the circuit breaker is in the power circuit When the Trip is tripped in a fault state, the action of the trip tripper is separated from the internal connection mechanism of the circuit breaker, and the electric operating mechanism cannot be used to perform the reset action by itself, but must be reset manually, which is common in conventional techniques. Products cannot solve the common problems mentioned above.

To sum up, the improvement device for the electric operating mechanism of the molded case circuit breaker in the prior art, the motors inside the electric operating mechanism are used in various rated voltages, so the types are very complicated, which will cause troubles in production, resulting in the Products cannot have commonality, resulting in excessive inventory, which cannot meet the requirements of economical production. Moreover, because the voltage and frequency used in each country are different, the above are the common problems faced by the electric operating mechanism of conventional molded case circuit breakers. The problem.

In order to achieve the above purpose, a full-voltage power supply device must be constructed on the improvement device of the electric operating mechanism of the molded case circuit breaker. It is best to have an energy storage function device inside to meet the requirements that various voltages can be used. In addition to the power supply to the electric operator, a control power supply to the internal electronic circuit and microprocessor must also be provided. The best method is to set a backup energy storage device inside, and the capacity of the energy storage device is sufficient to drive the electric operator to make the circuit breaker. The device can act according to the message instruction transmitted by the internal microprocessor unit according to the improvement device of the electric operating mechanism of the molded case circuit breaker, so that the circuit breaker can be closed ON, opened OFF or reset to OFF.

In order to achieve the above purpose, a deceleration mechanism can be built on the improvement device of the electric operating mechanism of the molded case circuit breaker to achieve the application of the function of driving a large load, or the capacity of the motor can be increased to overcome the problem when the circuit breaker is in the trip position. , the electric operating mechanism is actuated, and the driving torque can be increased so that the mechanism can link the operating handle of the circuit breaker, and a movable slide rail element is connected to a fixed groove element by a directional gear chain mechanism, In order to achieve the function of making the electric operator link the operating handle of the circuit breaker to advance and retreat, the actuating position travels to the fixed point such as closing ON, and when the opening is OFF, the sensing element sends a message to the automatic control unit, which is controlled by the microprocessor In this way, it can overcome the problem that the electric operating mechanism in the past cannot make the circuit breaker automatically reset to the set point of OFF when the circuit breaker is in the tripped state, or use the circuit breaker The internal auxiliary contact is used as the interpretation benchmark of the positioning point.

In order to achieve the above purpose, the improvement device of the electric operating mechanism of the formwork circuit breaker can be placed on one of the left and right sides of the circuit breaker, and a steel plate with an adjustable distance can be made between the operating handle of the circuit breaker Fittings are fixed, so that the electric operating mechanism is placed directly above the circuit breaker in the past, which makes it impossible to use other circuit breakers of different brands and specifications, so that the problems in the prior art can be improved.

In order to achieve the above-mentioned purpose, this invention creates an improved device for the electric operating mechanism of a molded case circuit breaker, which includes: a multifunctional power supply device, an automatic sequence control unit, and an electric operating mechanism unit; the multifunctional power supply device includes: an AC/DC A power input unit, a step-down rectification switchover unit, and a DC power output unit; the AC and DC power input unit is electrically connected to an external power supply, and the external power supply can be a general-purpose full-range AC and DC voltage power supply. The AC and DC power supply The input unit is electrically connected to the step-down rectification switching power conversion unit; the step-down rectification switching power conversion unit is obtained from the power supply of the AC and DC power supply input unit through an internal electronic circuit to a proper DC voltage power supply and then electrically connected to the DC Power output unit; the DC power output unit may be additionally equipped with an energy storage unit, and the DC power output unit is electrically connected to the automatic sequence control unit and the electric operating mechanism unit; the automatic sequence control unit includes: a positioning sensing device, a An external control unit and an actuation sequence control unit; the positioning sensing device is provided with a closed ON sensing element and an opening and breaking OFF sensing element, and the closing ON sensing element and the opening and breaking OFF sensing element are arranged on the circuit breaker The appropriate position of the closed ON position and the open OFF position is marked on the upper part. The positioning sensing device is connected to the action sequence control unit electrically or by mutual induction; the external control unit accepts command messages from external operators or control elements. Electrically connected to the operation sequence control unit; the operation sequence control unit receives information from the positioning sensing device and the external control unit and is electrically connected to the operation sequence control unit The internal sequence control logic calculation circuit, and then through the internal logic circuit or the microprocessor unit to calculate and interpret the information, send a message to make the electric operating mechanism unit actuate or not; the electric operating mechanism unit includes: an electric operating mechanism, a handle for actuation Positioning device; the electric operating mechanism is set on one of the left side or the right side of the circuit breaker. A steel plate is used between the electric operating mechanism and the operating handle of the circuit breaker to make the handle actuating positioning device. The handle actuating and positioning devices are connected to each other and act according to the information sent by the automatic sequence control unit, and the electric operating mechanism is driven to link the handle actuating and positioning device. The actuating positioning device is attached to the top of the circuit breaker, and the operating handle of the circuit breaker is actuated. The travel area is between the closed ON position and the opening and breaking OFF position. Depending on the circuit breaker, the steel plate of the handle actuating positioning device can be Fixed type or size-adjustable type; an improved device for the electric operating mechanism of a molded case circuit breaker. When the power circuit is normal, the electric operating mechanism unit receives the information command of the automatic sequence control unit to act, and the multifunctional power supply device provides electric energy. Drive the electric operating mechanism so that the circuit breaker can be electrically operated to achieve the function of closing ON and opening and breaking. The position sensing device in the control unit detects that the position of the circuit breaker operating handle of the circuit breaker is not in the ON position or the OFF position, and the electric operating mechanism unit accepts the information command of the automatic sequence control unit and is supplied by the multifunctional power supply The device provides electric energy to drive the electric operating mechanism to the OFF position, so as to achieve the function of automatic reset when the circuit breaker trips in a fault.

In order to achieve the above-mentioned purpose, this invention creates an improved device for the electric operating mechanism of a molded case circuit breaker, which includes: a multifunctional power supply device, an automatic sequence control unit, and an electric operating mechanism unit; the multifunctional power supply device includes: an AC/DC Power input unit, a step-down rectifier Switching power conversion unit, a DC power output unit; the AC and DC power input unit is electrically connected to an external power supply, the external power supply can be a general-purpose full-range AC and DC voltage power supply, and the AC and DC power input unit is electrically connected to the step-down Voltage rectification switching power conversion unit; the step-down rectification switching power conversion unit is the power supply of the input unit of the AC and DC power supply, through the internal electronic circuit to reach a suitable DC voltage power supply and then electrically connected to the DC power output unit; the DC power supply The output unit is electrically connected to the automatic sequence control unit and the electric operating mechanism unit; the automatic sequence control unit includes: a position sensing device, an external control unit, and an action sequence control unit; the position sensing device is electrically connected to the The circuit breaker is equipped with a circuit breaker ON auxiliary contact and a circuit breaker OFF auxiliary contact as a positioning element, and the positioning sensing device is electrically connected with the actuation sequence control unit; the external control unit accepts an external operator or control element The command information of the action sequence control unit is electrically connected to the action sequence control unit; the action sequence control unit receives the information of the positioning sensing device and the external control unit and is electrically connected to the internal sequence control logic calculation circuit of the action sequence control unit, and then through the microprocessor unit After calculating and interpreting the information, send a message to make the electric operating mechanism unit actuate or not; the electric operating mechanism unit includes: an electric operating mechanism, a handle positioning device; the electric operating mechanism is set on the left or right side of the circuit breaker One, the handle positioning device is made of a steel plate between the electric operating mechanism and the circuit breaker operating handle, and the electric operating mechanism and the handle operating positioning device are connected to each other to operate, according to the automatic sequence control unit. Information execution, drive the electric operating mechanism to link the handle to activate the positioning device, and the operating handle of the circuit breaker is positioned to the closed ON position or the opening and breaking OFF position; the handle positioning device is tied above the circuit breaker, and the circuit breaker operating handle is linked Actuation, the travel area is between the closed ON position and the open-off OFF position. Depending on the circuit breaker, the size of the steel plate of the handle actuating positioning device is different; an improved device for the electric operating mechanism of the formwork circuit breaker, used as a power circuit Normally, the electric operating mechanism unit accepts the self The information command of the activation sequence control unit is activated, and the multi-functional power supply device provides electric energy to drive the electric operating mechanism so that the circuit breaker can be electrically activated to achieve the functions of closing ON and opening and breaking OFF. When the power circuit fails, the circuit breaker trips , the improvement device for the electric operating mechanism of the molded case circuit breaker, the position sensing device in the automatic sequence control unit detects that the position of the circuit breaker operating handle of the circuit breaker is not in the closed ON position or the open OFF position, the electric operation The mechanism unit accepts the information instruction of the automatic sequence control unit to operate, and the multi-functional power supply device provides electric energy to drive the electric operating mechanism to the OFF position, so as to achieve the function of automatic recovery when the circuit breaker trips due to failure.

10: Modified case circuit breaker electric operating mechanism improvement device

11: External power supply

12: circuit breaker

13: Closed ON position

14: Start and break OFF position

15: Circuit breaker operating handle

16: Breaker ON auxiliary contact

17: Circuit breaker OFF auxiliary contact

20: Multifunctional power supply device

21: AC and DC power input unit

22: Step-down rectification switching substation unit

23: DC power output unit

24: Energy storage unit

30: Automatic sequence control unit

31:Position sensing device

32: External control unit

33: Action sequence control unit

34: Closed ON sensing element

35: Turn on and off the OFF sensing element

36: External manipulator

37: Control elements

38: Microprocessor unit

40: Electric operating mechanism unit

41: Electric operating mechanism

42: Handle actuation positioning device

[Figure 1] It is a configuration schematic diagram of the first embodiment of an improved device for the electric operating mechanism of a molded case circuit breaker created by the present invention

[Figure 2] It is a configuration schematic diagram of the second embodiment of an improved device for the electric operating mechanism of a molded case circuit breaker created by the present invention

The first implementation example of an improved device 10 for an electric operating mechanism of a molded case circuit breaker is shown in FIG. Sequence control unit 30, an electric operating mechanism unit 40; the multifunctional power supply device 20 includes: an AC and DC power input unit 21, a step-down rectification switching power transformation unit 22, a DC power output unit 23; the AC and DC power supply The input unit 21 is electrically connected to the external power supply 11. The external power supply 11 can be a universal full-range AC and DC voltage power supply. The AC and DC power supply input unit 21 is electrically connected to the step-down rectification switching power conversion unit 22; the step-down The rectification and switching transformation unit 22 is achieved by the power supply of the AC and DC power input unit 21 through the internal electronic circuit to a An appropriate DC voltage power supply is electrically connected to the DC power output unit 23; the DC power output unit 23 may be additionally equipped with an energy storage unit 24, and the DC power output unit 23 is electrically connected to the automatic sequence control unit 30 and the electric operating mechanism Unit 40; the automatic sequence control unit 30 includes: a positioning sensing device 31, an external control unit 32, and an actuation sequence control unit 33; the positioning sensing device 31 is provided with a closed ON sensing element 34 and an opening and closing OFF sensing element 35, the closing ON sensing element 34 and the opening OFF sensing element 35 device mark the appropriate position in the closing ON position 13 and the opening OFF position 14 on the circuit breaker 12, the position sensing device 31 It is electrically or mutually inductively connected with the action sequence control unit 33; the external control unit 32 is electrically connected to the action sequence control unit 33 by accepting the instruction message of the external operator 36 or the control element 37; the action sequence control unit 33 receives the information from the positioning sensing device 31 and the external control unit 32 and electrically connects the internal sequence control logic calculation loop of the action sequence control unit 33, and then after the information is calculated and interpreted by the internal logic circuit or the microprocessor unit 38, a message is sent to enable The electric operating mechanism unit 40 is actuated or not actuated; the electric operating mechanism unit 40 includes: an electric operating mechanism 41, a handle positioning device 42; the electric operating mechanism 41 is arranged on one of the left side or the right side of the circuit breaker 12, The electric operating mechanism 41 and the circuit breaker operating handle 15 are made of a steel plate to make the handle actuating positioning device 42, the electric operating mechanism 41 and the handle actuating positioning device 42 are connected and actuated, according to the automatic sequence control unit 30 to execute the message, drive the electric operating mechanism 41 to link the handle actuating positioning device 42, and the circuit breaker operating handle 15 is actuated and positioned to the closed ON position 13 or the opening and breaking OFF position 14; the handle actuating positioning device 42 is tied to the circuit breaker Above 12, the operating handle 15 of the circuit breaker is linked to operate, and the travel area is between the closed ON position 13 and the open OFF position 14. Depending on the circuit breaker 12, the steel sheet of the handle positioning device 42 can be fixed. Or size adjustable type; a molded case circuit breaker electric operating mechanism improvement device 10, when the power circuit is normal, the electric operating mechanism unit 40 accepts the information instruction of the automatic sequence control unit 30 to act, and the multi-functional power supply device 20 provides electric energy to drive the electric operating mechanism 41 to achieve the function of closing ON and opening OFF of the circuit breaker 12 electrically. The circuit breaker 12 trips due to a circuit accident, and the mold case circuit breaker electric operating mechanism improvement device 10 detects the position of the circuit breaker operating handle 15 of the circuit breaker 12 by the position sensing device 31 in the automatic sequence control unit 30 If it is not in the ON position 13 or the OFF position 14, the electric operating mechanism unit 40 accepts the information instruction of the automatic sequence control unit 30 to act, and the multifunctional power supply device 20 provides electric energy to drive the electric operating mechanism 41 to the OFF position. 14. Reach the function of automatic reset when the circuit breaker 12 trips out of fault.

The second implementation example of an improved device 10 for an electric operating mechanism of a molded case circuit breaker is shown in FIG. Sequence control unit 30, an electric operating mechanism unit 40; the multifunctional power supply device 20 includes: an AC and DC power input unit 21, a step-down rectification switching power transformation unit 22, a DC power output unit 23; the AC and DC power supply The input unit 21 is electrically connected to the external power supply 11. The external power supply 11 can be a universal full-range AC and DC voltage power supply. The AC and DC power supply input unit 21 is electrically connected to the step-down rectification switching power conversion unit 22; the step-down The rectification and switching power conversion unit 22 is the power supply of the AC and DC power input unit 21, through the internal electronic circuit to reach a suitable DC voltage power supply and then electrically connected to the DC power output unit 23; the DC power output unit 23 is electrically connected to the The automatic sequence control unit 30 and the electric operating mechanism unit 40; the automatic sequence control unit 30 includes: a positioning sensing device 31, an external control unit 32, and an actuation sequence control unit 33; the positioning sensing device 31 is electrically connected A circuit breaker ON auxiliary contact 16 and a circuit breaker OFF auxiliary contact 17 are set inside the circuit breaker 12 as positioning elements, and the positioning sensing device 31 is electrically connected to the actuation sequence control unit 33; the external control unit 32 is Accepts external manipulators 36 or the command information of the control element 37 is electrically connected to the operation sequence control unit 33; the operation sequence control unit 33 receives the information of the positioning sensing device 31 and the external control unit 32 and electrically connects the internal sequence control of the operation sequence control unit 33 The logic calculation circuit, after calculating and interpreting the information through the microprocessor unit 38, sends a message to make the electric operating mechanism unit 40 actuate or not; the electric operating mechanism unit 40 includes: an electric operating mechanism 41, a handle positioning device 42 ; The electric operating mechanism 41 is arranged on one of the left side or the right side of the circuit breaker 12, and the electric operating mechanism 41 and the operating handle 15 of the circuit breaker are made of the handle actuating positioning device 42 with a steel plate. The operating mechanism 41 and the handle actuating positioning device 42 are connected and actuated, and executed according to the information sent by the automatic sequence control unit 30, the electric operating mechanism 41 is driven to link the handle actuating positioning device 42, and the circuit breaker operating handle 15 is actuated and positioned to close The ON position is 13 or the opening and breaking OFF position is 14; the handle positioning device 42 is tied above the circuit breaker 12, and the operating handle 15 of the circuit breaker is linked to actuate. The circuit breaker 12 is different, and the size of the steel plate of the handle positioning device 42 is different; an improved device 10 for the electric operating mechanism of a formwork circuit breaker. When the power circuit is normal, the electric operating mechanism unit 40 accepts the automatic sequence control The unit 30 information commands actuation, and the multifunctional power supply device 20 provides electric energy to drive the electric operating mechanism 41 to achieve the function of closing ON and opening OFF of the circuit breaker 12 by electric actuation. When the power circuit fails, the circuit breaker 12 Tripping, the improvement device 10 for the electric operating mechanism of the molded case circuit breaker, the position sensing device 31 in the automatic sequence control unit 30 detects that the position of the circuit breaker operating handle 15 of the circuit breaker 12 is not in the closed ON position 13 or Turn on and off the OFF position 14, the electric operating mechanism unit 40 accepts the information instruction of the automatic sequence control unit 30 to act, and the multifunctional power supply device 20 provides electric energy to drive the electric operating mechanism 41 to the on and off OFF position 14, reaching the circuit breaker 12 The function of automatic reset when the fault trips.

To sum up, the improved device for the electric operating mechanism of the molded case circuit breaker has further improved the stability and safety of the circuit breaker panel in the power supply system, and has deep industrial applicability. In addition, after checking the relevant products on the market and the approved patent announcements, there is no one with the same technical characteristics as this creation, which also meets the statutory patent application requirements of novelty and advancement. To file a patent application in accordance with the law, I urge your review committee to grant the patent for this case as soon as possible to ensure the rights and interests of the applicant. However, what is disclosed in this case is only a preferred embodiment of this creation, which cannot limit the scope of rights of this creation. Any equivalent changes or modifications made in accordance with the spirit of this creation are still covered by the scope of patent applications for this creation. middle.

10: Modified case circuit breaker electric operating mechanism improvement device

11: External power supply

12: circuit breaker

13: Closed ON position

14: Start and break OFF position

15: Circuit breaker operating handle

20: Multifunctional power supply device

21: AC and DC power input unit

22: Step-down rectification switching substation unit

23: DC power output unit

24: Energy storage unit

30: Automatic sequence control unit

31:Position sensing device

32: External control unit

33: Action sequence control unit

34: Closed ON sensing element

35: Turn on and off the OFF sensing element

36: External manipulator

37: Control elements

38: Microprocessor unit

40: Electric operating mechanism unit

41: Electric operating mechanism

42: Handle actuation positioning device

Claims (2)

An improved device for an electric operating mechanism of a molded case circuit breaker comprising: A multifunctional power supply device, an automatic sequence control unit, and an electric operating mechanism unit; The multi-functional power supply device includes: an AC and DC power input unit, a step-down rectification switching power conversion unit, and a DC power output unit; the AC and DC power input unit is electrically connected to an external power supply, and the external power supply can be used for general purpose Full-range AC and DC voltage power supply, the AC and DC power input unit is electrically connected to the step-down rectification switching power transformation unit; the step-down rectification switching power transformation unit is connected to a An appropriate DC voltage power supply is electrically connected to the DC power output unit; the DC power output unit may be additionally equipped with an energy storage unit, and the DC power output unit is electrically connected to the automatic sequence control unit and the electric operating mechanism unit; The automatic sequence control unit includes: a positioning sensing device, an external control unit, and an actuation sequence control unit; the positioning sensing device is provided with a closed ON sensing element and an opening and breaking OFF sensing element, and the closed ON sensing The detection element and the ON/OFF sensing element device mark the proper position of the closed ON position and the ON/OFF position on the circuit breaker, and the positioning sensing device is connected with the actuation sequence control unit by electrical or mutual induction; the The external control unit is electrically connected to the operation sequence control unit by receiving the command information from the external operator or control element; the operation sequence control unit is electrically connected to the internal sequence of the operation sequence control unit by receiving the information of the positioning sensing device and the external control unit Control the logic calculation circuit, and then through the internal logic circuit or microprocessor unit to calculate and interpret the information, send a message to make the electric operating mechanism unit actuate or not actuate; The electric operating mechanism unit includes: an electric operating mechanism, a handle positioning device; The electric operating mechanism is arranged on one of the left side or the right side of the circuit breaker. The handle actuating positioning device is made of a rigid plate between the electric operating mechanism and the operating handle of the circuit breaker. The electric operating mechanism and the handle actuate The positioning devices are connected to each other and executed according to the information sent by the automatic sequence control unit, and the electric operating mechanism is driven to link the handle to activate the positioning device. The operating handle of the circuit breaker is positioned to the closed ON position or the start-off OFF position; the handle operates the positioning device It is tied on the top of the circuit breaker, linked to the operating handle of the circuit breaker, and the travel area is between the closed ON position and the open-break OFF position. Depending on the circuit breaker, the steel sheet of the handle positioning device can be fixed or fixed. Adjustable size; An improved device for the electric operating mechanism of a molded case circuit breaker. When the power circuit is normal, the electric operating mechanism unit receives the information command of the automatic sequence control unit to actuate, and the multifunctional power supply device provides electric energy to drive the electric operating mechanism to achieve the The circuit breaker can be electrically operated to achieve the functions of closing ON and opening and breaking OFF. When the power circuit breaks and the circuit breaker trips, the improved device for the electric operating mechanism of the mold case circuit breaker is controlled by the positioning sensing device in the automatic sequence control unit. Detect that the position of the circuit breaker operating handle of the circuit breaker is not in the closed ON position or the open OFF position, the electric operating mechanism unit receives the information command of the automatic sequence control unit to actuate, and the multifunctional power supply device provides electric energy to drive the electric operating mechanism Actuate to the OFF position to achieve the function of automatic reset when the circuit breaker trips in a fault. An improved device for an electric operating mechanism of a molded case circuit breaker comprising: A multifunctional power supply device, an automatic sequence control unit, and an electric operating mechanism unit; The multifunctional power supply device includes: an AC and DC power input unit, a step-down rectification switching power transformation unit, and a DC power output unit; the AC and DC power input unit is an electrical Connect to an external power supply, the external power supply can be a universal full-range AC and DC voltage power supply, and the AC and DC power supply input unit is electrically connected to the step-down rectification switching power transformation unit; the step-down rectification switching power transformation unit is powered by the AC and DC power supply The power supply of the input unit reaches an appropriate DC voltage power supply through the internal electronic circuit and is then electrically connected to the DC power output unit; the DC power output unit is electrically connected to the automatic sequence control unit and the electric operating mechanism unit; The automatic sequence control unit includes: a positioning sensing device, an external control unit, and an actuation sequence control unit; the positioning sensing device is electrically connected from the auxiliary contact of the circuit breaker ON and the auxiliary contact of the circuit breaker provided inside the circuit breaker. The point is used as a positioning element, and the positioning sensing device is electrically connected to the action sequence control unit; the external control unit is electrically connected to the action sequence control unit by receiving the command information from the external operator or control element; the action sequence control The unit receives the information from the positioning sensing device and the external control unit and electrically connects the internal sequence control logic calculation loop of the actuation sequence control unit, and after the information is calculated and interpreted by the microprocessor unit, a message is sent to make the electric operating mechanism unit actuate or not Action; The electric operating mechanism unit includes: an electric operating mechanism, a handle positioning device; The electric operating mechanism is arranged on one of the left side or the right side of the circuit breaker. The handle actuating positioning device is made of a rigid plate between the electric operating mechanism and the operating handle of the circuit breaker. The electric operating mechanism and the handle actuate The positioning devices are connected to each other and executed according to the information sent by the automatic sequence control unit, the electric operating mechanism is driven to link the handle to activate the positioning device, and the operating handle of the circuit breaker is positioned to the ON position or OFF position; The handle actuating positioning device is tied above the circuit breaker, and the operating handle of the circuit breaker is actuated. The travel area is between the closed ON position and the opening and breaking OFF position. different sizes; An improved device for the electric operating mechanism of a molded case circuit breaker. When the power circuit is normal, the electric operating mechanism unit receives the information command of the automatic sequence control unit to actuate, and the multifunctional power supply device provides electric energy to drive the electric operating mechanism to achieve the circuit breaker. The circuit breaker can be electrically actuated to achieve the function of closing ON and opening and breaking OFF. When the power circuit breaker trips, the electric operating mechanism improvement device of the mold case circuit breaker is controlled by the position sensing device in the automatic sequence control unit. Detect that the position of the circuit breaker operating handle of the circuit breaker is not in the closed ON position or the open OFF position, the electric operating mechanism unit receives the information command of the automatic sequence control unit to actuate, and the multifunctional power supply device provides electric energy to drive the electric operating mechanism Actuate to the OFF position to achieve the function of automatic reset when the circuit breaker trips in a fault.

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