RU101863U1 - ELECTRIC SWITCHING DEVICE FOR LOW VOLTAGE CHAINS - Google Patents

Abstract

 1. An electrical switching device for low voltage circuits, characterized in that it contains:! a plurality of poles suitable for being placed next to each other inside the supporting structure, each of the poles comprising a housing formed by two shell halves connected to each other and containing at least one arc chamber, one fixed contact and one corresponding movable contact, which connect / disconnect with each other; ! a drive mechanism operatively connected to the movable contact of each pole by means of connecting elements in such a way as to connect / disconnect it with the corresponding fixed contact. ! 2. The device according to claim 1, characterized in that it contains a gasification element having the shape of a bridge and located around the connection area of the fixed and movable contacts. ! 3. The device according to claim 1, characterized in that the first and second jacks are formed inside the housing, each of which is designed to receive a corresponding section of the first and second terminals, which are designed to connect to sections of the fixed and movable contacts, respectively, the sections of the fixed and the movable contacts and the first and second terminals have corresponding holes suitable for receiving mutual clamping means. ! 4. The device according to claim 3, characterized in that a third socket is formed inside the housing, in which there is a transducer operatively connected to an electronic safety device that is used in a switching device, the transducer comprising a first closed-loop magnetic circuit

Description

FIELD OF TECHNOLOGY

The present utility model relates to an electrical switching device, in particular to an automatic circuit breaker or disconnector, which are preferably used in low voltage circuits.

BACKGROUND OF THE INVENTION

As you know, switching devices used in low-voltage circuits (that is, for applications with a rated voltage of up to 1000 V at alternating current / 1500 V at direct current), usually circuit breakers, circuit breakers, disconnectors and contactors, usually denoted as “Switching devices”, and hereinafter, for brevity, denoted briefly as circuit breakers (circuit breakers), are devices designed to ensure the normal operation of individual parts of electrical systems and loads, promptly knitted them.

Breakers typically include a housing containing one or more poles; each pole contains at least one fixed contact and a corresponding movable contact, which are connected to respective terminals for input / output connection with a connected electrical circuit. The corresponding drive mechanism moves the movable contacts, in particular, the action of such a drive means is controlled by the main shaft, which is operatively connected to the movable contacts in such a way that following its rotation, the movable contacts are connected to or separated from the stationary contacts (closed circuit breaker) (open circuit breaker). The connection / disconnection of the contacts takes place inside the intended for this arc chambers, which are designed in such a way as to minimize the effects of electric arcs. Moving the movable contacts can be carried out manually, through the corresponding levers made on the front of the circuit breaker, and through the operation of the known safety devices that the breaker is equipped with.

In general, whatever the design scheme, switching devices must be fast and reliable in operation, must guarantee an adequate service life, and must have a design that is as compact as possible, easy to use, easy to assemble and easy to use installation, while the cost of its manufacture must be competitive.

In particular, the published patent application EP 1912239 discloses a circuit breaker comprising an external housing accommodating at least one fixed contact for each pole and at least one movable contact, which can be connected / disconnected from each other; a rotating element comprising at least one connector for each pole, which is designed to accommodate at least one movable contact of the corresponding pole; a drive mechanism operatively connected to the rotating element to enable its movement.

However, the said document does not disclose the poles, each of which contains a housing formed by two shell halves connected to each other.

BRIEF DESCRIPTION OF THE EMBODIMENT OF THE USEFUL MODEL

The objective of this utility model is to create a switching device of this type, which would have improved functions and characteristics.

This task is achieved using a switching device according to what is indicated in the attached formula of the utility model, and what is described below.

The technical result of the claimed utility model is improved functions and characteristics of switching devices of a known type, in particular, due to poles providing the general modularity of the pole structure of the switching device.

A switching device according to the present utility model will be described below, with reference to one of its embodiments as a circuit breaker, without intending to limit in any way possible applications.

BRIEF DESCRIPTION OF THE DRAWINGS

Hereinafter, embodiments of the present utility model will be described in more detail, but without limiting the embodiments of the switching device, with reference to the accompanying drawings, in which:

Figure 1 depicts a General view of the circuit breaker, according to the present utility model;

Figure 2 - General view of the corresponding one pole of the circuit breaker in figure 1 in disassembled form;

Figure 3 - three poles of the circuit breaker in figure 1 in a disassembled form;

Figure 4 is a General view of the poles of figure 3, connected to each other;

Figure 5 is a General view of the pole in figure 2 with an element for gasification installed around the area of the connection of the contacts;

Fig.6-8 - General views of the components of the Converter used in the circuit breaker, according to the present utility model;

Fig.9 is a diagram of the flow model in the Converter of Fig.6-8 under various operating conditions / Fig.10 is a General view of the transmission shaft used in the circuit breaker, according to the present utility model;

11-12 - General views at various stages of assembly of the chopper in figure 1;

Fig.13-15 is a General view of the housing and the connection device for components that can be used in the breaker, according to the present utility model.

DESCRIPTION OF PREFERRED EMBODIMENTS

Figure 1 is a General view of one possible embodiment of a circuit breaker 1 according to the present utility model. In the embodiment illustrated in the drawings and described below, the circuit breaker 1 is a three-pole type breaker; it is clear that the circuit breaker 1 can be with a different number of poles depending on the requirements of the electrical system into which it is inserted, for example, unipolar, bipolar, three-pole or four-pole. For particularly high loads, all or some of the poles can be duplicated; it is possible, for example, to obtain configurations with six or eight poles for systems having three or four phases, respectively, as well as a configuration with seven poles for systems with three phases plus a neutral phase, while the neutral pole is not duplicated.

Preferably, a circuit breaker 1 is manufactured starting from poles 2, which are structurally autonomous, independent and substantially equal to each other. In practice, as shown in FIGS. 2-5, each of the poles 2 is provided with its own housing 3, which has a substantially prismatic shape and is composed of two shell halves 3A and 3B of insulating material. The two halves of the shell 3A, 3B are connected along the connection lines, the additional profiles of which are made with the possibility of approaching each other so as to provide mechanical strength and sufficient tightness for gases that can be formed inside the pole 2. In practice, the profiles of the connection lines are grooves / sockets 4 and protruding parts / bulges 5, which penetrate each other with high accuracy and form a labyrinth that prevents leakage of gases created by the electric arc. The housing 3 comprises an arc chamber equipped with arcing plates 8, and at least one fixed contact and a connected movable contact 7; in particular, the movable contacts 7 are arranged to rotate around the axis of rotation 100, while the outer side surfaces of the housing 3 create surfaces that are essentially perpendicular to the axis 100 of rotation. Thus, excellent overall modularity of the pole construction is ensured. The movable contact pin 19 is placed in a socket (not shown) inside the housing 3. Preferably, the circuit breaker 1 comprises a gasification element 30 located around the arc region where a significant amount of heat is generated. As shown in FIGS. 2 and 5, the gasification element 30 preferably consists of a body part in the form of a bridge; while the guides and fasteners 31 are made at the ends of the hull in the form of a bridge, in order to facilitate installation and subsequent maintenance in the working position. It should be noted that if the element 30 (for FIG. 5) for gasification is placed in the working position, then the two side walls of the body part in the form of a bridge face the arc region corresponding to the contour of the movable contact 7 with two guides and fasteners 31 located on the sides the upper electrode 13, at the height of the fixed contact 6. The gasification element 30 is made of an insulating material with gasification properties: that is, when it is exposed to heat generated by the release of energy during forming an arc, it releases deionized substances capable of suppressing the arc, accelerating its interruption and, ultimately, reducing the arc extinction time and the total released energy. The gasification element 30 has a shape and dimensions for the service life not less than the entire service life of the circuit breaker; in any case, due to its particularly easy assembly, it will always be possible to replace the partially worn gasification element 30 with a new one, for example, during a normal maintenance operation. An additional advantage that the gasification element 30 provides is that the extinguished extinguishing gases try to push the electric arc towards the extinguishing plates 8, which are located in the upper part of the extinguishing chamber. The side walls of the gasification element help, for their part, to prevent the inappropriate exit of the electric arc, keeping it virtually enclosed in areas intended for extinguishing.

In the upper part of the arc chamber 8, the housing 3 has an opening 9, which at the assembly stage is integrated with the grill 10, through which the gases generated during the exit of the electric arc exit.

In front, each pole 2 has an opening 11 for the output of the elements of the working connection of the corresponding movable contact 7 with the drive mechanism 50 of the circuit breaker 1; moreover, the elements of the working connection of the movable contact 7 with the drive mechanism 50 are preferably connecting rods 12 made of insulating material. The connecting rods 12 protrude from the body of the pole, passing through its housing 3, and are pivotally suspended on one side of the structure 13 of the movable contact 7 (inside the pole), and on the other side on the drive rod 51 (external to the pole) of the main shaft 53 of the drive mechanism fifty.

Inside the housing 3, additional sockets 15, 16 are made, inside of which there are electrodes 13 and 14 of the fixed contact 6 and the movable contact 7. The sockets 15 and 16 also allow holding the ends of the terminals 17, 18 for connecting to the electrical system, inside of which a breaker 1 is installed, and made in such a way that the conclusions 17, 18 are facing outward from the pole 2 according to the desired configuration. In particular, the electrodes 13 and 14 preferably have several drilled 19 holes for mounting the respective terminals 17 and 18, depending on the requirements of the application; in practice, leads 17 and 18 also have drilled 19 holes, similar to those on the electrodes 13 and 14, and as soon as they are inserted into the sockets 15 and 16, they are partially located near the electrodes 13 and 14 so that the corresponding drilled holes are on the same line for the passage of the clamping screws. The additional sockets 21 accommodate special through screws, for example, hexagonal screw heads 22 and gripping elements, such as plates 23, which converge together to clamp the electrodes 13, 14 in the housing 3 and further guarantee the strength of each pole.

An example of already installed conclusions 17, 18 is shown in figure 1.

Also in the housing 3 of each pole there is a socket 24 for a converter 700, which is electrically connected to a safety device, usually an electronic relay, which is located on the front side of the circuit breaker 1, and the sockets 24 of the transformers 700 of different poles are on the same line on the back wall of the breaker itself circuit when assembly of breaker 1 is completed.

Preferably, as shown in FIG. 6, the transducer 700 comprises a first closed loop magnetic circuit 710 composed of a packet of plates; however, the closed loop of the first magnetic circuit 710 allows you to surround the primary conductor (not shown) corresponding to one of the phases or one of the poles of the circuit breaker 1. A secondary winding 712 with the function of generating a secondary current for supplying energy to the safety device is located around a section of the first magnetic circuit 710.

The device 700 comprises a second magnetic circuit 720, which is also preferably composed of a plurality of stacked plates; the two magnetic circuits 710 and 720 are structurally separate and different from each other and brought together close to each other so that at least part of the magnetic flux passing in the first circuit 710 is intercepted by the second magnetic circuit 720. In particular , the second magnetic circuit 720 is located around the secondary winding 712 so as to wrap part of it, while it is operatively connected to the first magnetic circuit 710 in two main areas where two magnetic circuits are placed, essentially in contact with each other. Two connection areas are preferably located at the ends of the secondary winding 712, thereby forming the desired bypass magnetic flux circuit. In practice, in the areas of the connection between the two magnetic circuits, the first magnetic flux is interrupted and experiences a detected deviation with respect to the second magnetic circuit 720. On the transition from circuit 710 to circuit. 720, flow lines follow a contour with at least one constituent element perpendicular to the direction in the stacked plates; therefore, at least one component of these deflection lines perpendicularly intersects the plane of the plates of the two chains 710 and 720, thus passing through the natural air gaps formed by the gaps between adjacent plates of each of the magnetic chains 710 and 720, and between the chain 710 and the chain 720. This circuit provides the desired effect of a weighted subtraction of the flow, based on the magnitude of the primary current.

In addition, the connection between the surfaces of the magnetic circuits 710 or 720 can occur directly, that is, by arranging two magnetic circuits opposite each other, or by arranging interface elements between them composed, for example, of diamagnetic material; this device facilitates the passage of flux from the first magnetic circuit into the second magnetic circuit, with strong currents in the primary conductor. As for the average currents, the flow passage between the two circuits is instead suppressed.

In particular, as the current in the primary conductor increases, the first magnetic flux gradually tends to propagate also to the second circuit 720. Thus, the second flux will circulate in the second magnetic circuit 720 as a variable fraction of the flux generated by the current passing in the primary conductor; the portion of the flux in the second magnetic circuit 720 increases, since the amount of current circulating in the primary conductor increases, gradually disconnecting the first magnetic circuit 710. Of these two magnetic fluxes, only the first is influenced by the secondary winding 712, and therefore the amperometric output power depends only from her. The output power is due to the following: in conditions. low current in the primary conductor 711 there are insignificant movement of the flow into the second magnetic circuit and, therefore, the secondary current eventually becomes fully available for supplying power to the electronic safety device; under conditions of high primary current values, the output power generated by the winding, on the contrary, turns into a correspondingly reduced one, so as to remain within compatibility with the characteristics of the safety device.

The behavior of the device 700 is further illustrated in FIG. 9. Curve A shows the magnetic flux model in the section of the first magnetic circuit 710, on which the winding 712 is wound, as a function of the primary current; curve B is a magnetic flux model in the second magnetic circuit 720, while curve C is a total flux consisting of the sum of the previous fluxes. In practice, since the primary current increases, the flux absorbed by the second magnetic circuit 720 can increase unlimitedly, while the flux in the section corresponding to the secondary winding 712 tends to stay around a substantially constant level. This allows a substantially constant current to be obtained for the entire range of characteristics of the primary current and also at the ends of the secondary winding 712. The magnitude of this current as a function of the primary current closely matches the design parameters of all the described components.

As shown in FIGS. 7-8, device 700 comprises a sheath 714 made of an insulating material that encompasses all components of the device 700; this gives characteristics of compactness, strength, limited weight and easy assembly. The hole 716 in the shell 714 allows the passage of the electrical connections of the secondary winding 712, which are necessary for the operation of the safety device to which it is connected. The drawings illustrate how a sheath 714 is preferably placed to contain another current transducer 715 around a primary conductor (or a derivative of a current, such as a Rogowski sensor or a series of Hall sensors, for example), which is particularly suitable for detecting or measuring current magnitude. In this case, the hole 716 also allows the passage of electrical connections of this device.

With this solution, the power supply device 700 in practice forms a single unit with a current sensor and can be inserted easily and directly into the shell of each pole 2.

As illustrated, for example, in FIGS. 2-3, additional housings 25 are defined in each case, suitable for receiving fastening and closing means of poles, such as screw nuts, and through holes 27, used to allow assembly assembly connecting rods 28 to pass through.

During the assembly of the circuit breaker 1, the required number of poles is installed in series and assembled between the two sides (of which only one, indicated by 40, is shown in FIG. 3), creating a “package” or “sandwich” configuration by means of connecting rods 28 of the through type, which, passing through all available poles, ensure precise and compact alignment of the circuit breaker group. Some nests which. placed on the outside of the halves of the shell, provide the passage of the Converter cables towards the safety device, which is located inside in the front side of the circuit breaker 1.

The back of the pole block 2 is covered with a plate 29 made of insulating material and covers the transducers 700, isolates the live parts and, in practice, forms the lower wall of the breaker 1. Two removable adhesive strips 32 cover the upper and lower parts of the bottom of the poles 2 in order to sufficiently insulate also connecting screws of the electrodes 13 and 14 at the terminals 17 and 18 of the circuit breaker 1.

In practice, as shown in FIG. 4, the pole block 2 of the circuit breaker 1 is shown essentially as a single assembly in the shape of a prism; wherein the connecting rods 12, which are connected to the lead rod 51, are tilted forward from the front side of the pole block.

As shown in FIG. 11, two sheets of sides 40 extend forward toward the front of the circuit breaker 1 beyond the dimensions of the poles 2, thereby providing a bearing seat 52 of the transmission shaft 53. As shown in FIG. 10, the transmission shaft 53 is provided with cranks 54 for connecting the drive shaft 51, by means of which it moves the movable contacts 7. The transmission shaft 53 is also provided with a crank 57 for working connection with the drive mechanism 50; the crank 57 of FIG. 10 is preferably formed as a continuation of one of the cranks 54 ,. but, depending on the number of poles, it can also be of an independent type. Several cams 55 and levers 56 elastic. the types that are used to exercise. signaling functions about the status of the circuit breaker 1 (for example, closed or open) and the reinstallation of accessories (for example, the shutdown solenoid) are also installed on the shaft 53. Some of the cams 55 perform a safety function together with other kinematic mechanisms of the circuit breaker, for example, a spring 41 anti-rebound and a deflection spring 42 located on two sheets of the sides 40. The anti-rebound spring 41 is a device that is capable of preventing the chopper from reoccurring ennogo closed position following the opening maneuver. On the contrary, the deflection spring 42 tends to hold the shaft 53 in the open position.

In addition to the shaft 53, other transverse elements are located between the two sheets of the sides 40. The first transverse element 43 ,. also made of sheet material, connects the sides 40 to each other at an intermediate height between the upper side of the poles 2 and the connecting rods 12. The transverse element 43 forms the base of the compartment 60 for the safety device and for the junction box 61 for components, separating it from the compartment 70 drive mechanism.

As indicated above, the safety device is usually an electronic relay, which during manufacture and its functions is more or less complicated depending on the requirements of the application. For example, you can use a safety device of a simplified form, which is able to provide a minimal but sufficient level of protection. Such a device, usually referred to as an electronic knife and having a well-known shape, and for this reason not described similarly, electronically creates the effect of an electromagnetic armature located close to the electrodes and capable of disengaging the trip device in the event of dangerous short circuits, i.e. at especially high current values during short circuit. Thus, the switching device according to the present utility model adopts the configuration of a disconnector, which, in contrast to what usually happens in disconnectors of a known type, is equipped with a device of a special protection for this case.

However, it is clear that the safety device can be used instead of a simple "electronic knife", that is, provided with external controls and instructions for use by the operator, as is usually the case for an automatic circuit breaker 1 of the type shown in the drawings.

The power supply to the safety device (whether it is an electronic knife or a more sophisticated safety device), as well as the required detection of currents, for example, to identify the presence of a short circuit, occurs using the transducers 700 described above. The power supply to the safety device can also occur , alternatively, from auxiliary or external sources.

In practice, the safety device analyzes some electrical operating parameters, for example, detected by transducers 700, and in the event of a failure or operational anomaly sends a signal to the trip solenoid, which acts on the so-called trip device of the drive mechanism 50. The trip solenoid is also installed in the compartment 60, but its actuator is facing toward the compartment 70 of the drive mechanism 50, where it can act on the disengagement shaft 53 of the drive mechanism itself in the middle designed for this lever.

A second metal pepper element 44 is mounted in front of the pole stack 2, slightly below the base, and faces the drive unit compartment 70. Element 44 acts as an additional connecting rod for the sheet sides 40 and, having a prismatic cross-section, gives rigidity to the aligned pole block . This element 44 also performs the function of securing the drive mechanism 50 and securing the poles by means of screws 26 that are inserted into the slots 25.

The drive mechanism 50 used for the circuit breaker is a mechanism for the type of energy storage and is installed in the designated compartment 70, as shown in Fig.12; other possible components can be placed in the compartment 70, which can be located to the right or left of the drive mechanism itself, such as, for example: device 71 for servo-auxiliary electrical load of the springs (working element of the engine); opening coil (SOR); undervoltage relay (protection relay) (UVR); auxiliary contacts; closing coil (SCR); work counter.

Preferably, such components are mounted on the device 171 for accommodating and connecting the components illustrated in FIGS. 13-15. The device 171 contains a figured structure provided with a bus for electrical connection of components, and one or more sockets 621, 622, 623 for placement of components inside them. A connection bus (not indicated) includes cables and one or more plugs or terminals for connection to accessories. The connecting bus is protected by a housing in the form of a sheath made of plastic material, forming a compartment 510, from which protrude the ends of the cables equipped with plugs for connecting various components.

The device 171 comprises means of a mechanical interface with one or more kinematic mechanisms of the circuit breaker 1, for example, for transmitting the state of the circuit breaker 1 (for example, open, closed, turned off) to one or more components located inside the device 171.

As shown in FIG. 14, accessories 650 are placed close to the corresponding socket and are electrically connected to the winding bus by means of plugs (not shown), protruding from the cable compartment; in addition, accessories are attached to the device 171 by means of screws.

In practice, the figured design of the device 171 constitutes a single assembly in which components 650 are connected to the corresponding terminals, and such an assembly is ready for installation in the compartment 70 of the circuit breaker 1. The cable compartment 510 of the device 171 includes a removable connection element 651 for a corresponding socket element present in the circuit breaker compartment 70 so as to make a socket / plug connection by connecting various installed accessories. Mentioned plug 651 allows you to connect the winding bus for all accessories 650 available on the device 171, using a single plug. The corresponding socket in the compartment of the circuit breaker then allows you to connect additional devices that can be quickly combined with a circuit breaker 1, for example, with an electronic safety device. Corresponding bus extensions may also be intended for the circuit breaker junction box 61, which is located above the circuit breaker fuse block. Thus, the connection of all components is carried out thanks to a single bus and an electronic interface unit, which ensures each of the components to function correctly. This bus at the same time allows you to distribute the additional power supply, which is necessary for various components, as well as transmit all of the usual control signals related to the same components. A special characteristic of such a mutual connection system is that the bus is placed directly and distributed on a removable support holding the components, which must be inserted into the circuit breaker.

As shown in FIGS. 11 and 12, on the outside of the pole block 2 and on the sheets of the sides 40, the circuit breaker structure is supplemented by an outer casing 200 formed by four walls made of insulating material. Of these four walls, two side walls, 201 have several mounting sections 202 at the bottom that are to be used to attach the circuit breaker 1 to the electrical switchboard; the main task of the upper wall 203 is to strengthen the arc chambers and fastening the lattice 10 of the arc chambers; bottom wall 204 complements the external circuit breaker housing. In addition, there are sockets 220 on the upper wall 203, inside of which several pins or ribs (not shown) are inserted, which are made of plastic or rubber and can improve galvanic separation between the phases. The outer casing 200, made of insulating material, in addition to imparting special characteristics to the circuit breaker, also has the essential function of increasing the level of electrical insulation between the energized parts of the circuit breaker and its external parts.

As shown in figure 1, the frame 204, which also complements and characterizes aesthetically, the front side of the circuit breaker 1, is installed in front of the drive mechanism 50. Various user interface elements protrude from the front frame 204 of the circuit breaker 1, such as: spring load lever 205; push buttons 206 "0" and "1", which allow you to control the circuit breaker; window 207 of the safety device; one or more exemplary small windows, indicated at 208, for signaling a circuit breaker state (closed, open) and / or for indicating an uncoupled state and / or for indicating a load state of a main drive spring.

Claims (10)

1. An electrical switching device for low voltage circuits, characterized in that it contains: a plurality of poles suitable for being placed next to each other inside the supporting structure, each of the poles comprising a housing formed by two shell halves connected to each other and containing at least one arc chamber, one fixed contact and one corresponding movable contact, which connect / disconnect with each other; a drive mechanism operatively connected to the movable contact of each pole by means of connecting elements in such a way as to connect / disconnect it with the corresponding fixed contact. 2. The device according to claim 1, characterized in that it contains a gasification element having the shape of a bridge and located around the connection area of the fixed and movable contacts. 3. The device according to claim 1, characterized in that the first and second jacks are formed inside the housing, each of which is designed to receive a corresponding section of the first and second terminals, which are designed to connect to sections of the fixed and movable contacts, respectively, the sections of the fixed and the movable contacts and the first and second terminals have corresponding holes suitable for receiving mutual clamping means. 4. The device according to claim 3, characterized in that a third socket is formed inside the housing, in which there is a transducer operatively connected to an electronic safety device that is used in a switching device, the transducer comprising a first closed-loop magnetic circuit to surround the primary conductor, a secondary a winding having as a core a section of the first magnetic circuit, and a second magnetic circuit, which is structurally separated from the first magnetic circuit and is operatively connected to the first magnet itnoy chain so that at least one portion of the main magnetic flux generated in the magnetic circuit of the first current flowing in the primary conductor is absorbed by the second circuit in a proportion depending on the magnitude of the current. 5. The device according to any one of claims 1 to 4, characterized in that the transverse through holes are made on the body of each pole, which define the through tunnels, each tunnel containing a corresponding assembly connecting rod for a plurality of poles located nearby. 6. The device according to claim 1, characterized in that the housing of each pole has a front opening from which the connecting elements protrude, and the connecting elements contain insulating connecting rods having a first end connected to a corresponding movable contact and a second end operatively connected to gear shaft drive mechanism. 7. The device according to claim 4, characterized in that the supporting structure comprises a pair of sheets of sides connected to each other by at least one first and one second transverse elements, wherein a pair of sides and the first and second transverse elements form a first region designed to accommodate the safety device, and a second area designed to accommodate the drive mechanism and one or more components that may be associated with a switching device. 8. The device according to claim 7, characterized in that it contains a device for accommodating and connecting components, the housing and the connecting device having a figured design, which includes a bus for electrical connection of components and one or more sockets for placing components. 9. The device according to claim 1, characterized in that it contains an outer casing, inside which an assembly is formed, formed by a supporting structure with adjacent poles, the outer casing comprising a lower wall, an upper wall and two side walls, on which suitable fastening sections are defined to the electrical switchboard. 10. The device according to claim 3, characterized in that it contains an insulating plate that covers the back of many adjacent poles, and one or more insulating adhesive strips for closing and isolating the means of mutual clamping of the first and second terminals with the corresponding sections of the fixed and movable contacts, and a frame located in front, on which one or more windows are made for receiving user interface elements.