RU2741065C1 - Electric cabinet with sliding module - Google Patents

Abstract

FIELD: electrical engineering.SUBSTANCE: metal electrical cabinet in the form of a parallelepiped, divided into compartments with walls of rectangular shape. In the modules there installed are sliding modules with two handles, a rotary handle of the switch and a push button on the front panel of the module. In the rear walls of the compartments there installed are grids of insulating material, on the rear panel of the module there installed are power electric connectors with flat contacts of spring type, which are coaxial to the holes in the insulating grids on the rear walls of the compartments. Rectangular mounting plate is made inside the module. Side walls of compartments are made with lower part in the form of C-shaped profile, rollers are fixed inside bend of each wall. Upper and lower walls of compartments are made with T-shaped profile along front edge. Module front panel is larger than compartment opening. Z-shaped profiles are made on the module bottom sides. Behind the front panel of the sliding module there is a protective box in form of a U-shaped frame with depth of 3-10 cm. On the side wall of the protective box there is a connector of secondary circuits with contacts with length of 1-3 cm longer than the length of contacts of power connectors. Button has a push mechanism with a return spring, the stem of the button is connected to the pusher. Pusher has two slots of elongated shape, located at an angle to axis of stroke of button stem, through slots pass two pins, rigidly fixed on two plates of blocking module of rectangular shape. Module locking plates are arranged near the bottom of the module and covered from above with a jacket. Ends of module locking plates pass through slots in Z-shaped profiles of module bottom. On the side walls of the compartment at different depths there are 3 holes made at one horizontal level with the ends of the module locking plates. On the rotary handle rod of the switch there is a cam, one of the ends of the interlocking plate of the switch is fixed with an axis to turn to the cam, the other end passes through the slot in the pusher. In side wall of protective box there is a slot coaxially to cutout in pusher. Gap between front panel of module and external parts of cabinet is less than 2.4 mm, gap between edges of compartment and parts of sliding module in positions of control and disconnected is less than 2.4 mm.EFFECT: technical result consists in improvement of reliability of blocking and ergonomics of use.5 cl, 28 dwg

Description

The present invention relates to the field of electrical engineering, in particular to structures for cabinets or panels made of metal used to accommodate electrical equipment.

An example of such electrical cabinets can be a cabinet with a collapsible frame under the patent RU 2715381 dated 09/11/2019.

In some applications, electrical switchgear cabinets are required to be partitioned - internal division into sections using partitions, with access to each section through a separate door. This is necessary to improve the reliability and uninterrupted operation of electrical equipment; the ability to repair and service separated compartments without disconnecting power from other compartments while maintaining the safety of personnel.

There are also solutions in which individual sections are made in the form of pull-out modules with power connectors and connectors for secondary (control) circuits, which can be removed from the electrical cabinet. This further increases the speed of replacing modules for repair or maintenance, minimizing the downtime of equipment powered by a given electrical cabinet module. This leads to the need to use additional devices to ensure the safety of the service. In particular, locks are required to prevent insertion and removal of the module with the device (switch) turned on in it. It is also necessary to ensure that the modules have basic provisions:

- connected or working (connectors for power and secondary circuits are connected);

- control or test (power connectors are disconnected, the connector of the secondary circuits is connected);

- disconnected (connectors for power and secondary circuits are disconnected).

Such solutions are known from the prior art. For example, they are described in patents DE 19948697 (30.09.1999), DE 10204226 (30.01.2002), EP 0937323 (24.01.2001), RU 2321122 (28.12.2006).

The prototype of the claimed invention is a solution known from the patent RU 2251180 from 27.03.2002. Described is a low-voltage switchgear (NKU) with a retractable instrument module. A blocking beam with locking lugs protruding from the side is located in the housing of the withdrawable module. The withdrawable module is inserted into the GCC compartment, which has a base with flanges. In the flanges of the base of the compartment there are slots of complex shape, with which the locking lugs interact, in the lowered form blocking the drawer in the position of attachment, detachment and control. The blocking beam is lifted by means of a lever mechanism associated with a push button on the face of the drawer unit. The result is claimed to simplify the locking mechanism and ensure the presence of the control position of the drawer.

It should be noted that the use of the prototype locking mechanism is associated with its movement within the module, namely the lifting of the beam. The use of withdrawable modules in electrical cabinets is usually accompanied by tight wiring of electrical equipment inside the modules. The presence of a lifting element can be hazardous to the conductors inside the module. Conversely, conductors inside the module can interfere with the upward movement of the beam and disrupt the operation of the locking mechanism. Thus, there is a threat to the reliability of the use of this device.

The connector for the secondary circuits of the prototype is located on the back of the drawer unit and has its own separate drive with a pusher. Thus, to transfer the unit to the control position, it is necessary not only to move the unit, but also to manipulate additionally the pusher of the secondary circuit connector. This reduces the convenience of operating the unit, introduces additional mechanisms into the design, which also affects the potential reliability of the device.

When the prototype module is moved to the control and disconnected position, the module is pulled out of the cabinet, allowing some access to the inside of the module. However, there may be live elements in the module. For safety reasons, it is advisable to ensure the protection level of the IP3x module in the test and disconnected positions. Let us agree to call hereinafter the degree of protection IP3x (Regulated by IEC 60529 (DIN 40050, GOST 14254)) protection against access to hazardous parts (under voltage) provided by the cabinet shell, its compartments and modules from tools, cables, etc. sizes from 2.5 mm and more.

The aim of the claimed invention is to provide an electrical cabinet with pull-out modules that:

- have a sufficient system of reliable mechanical interlocks, the moving parts of which do not rise;

- have a control position;

- provide access to the internal volume and mounting surfaces of the module after removal;

- provide the degree of protection IP3x in the connected, test and disconnected positions;

- provide signaling about the module position;

- easy and convenient to install and remove;

- have mechanical protection against installing the removed module in the wrong place.

Achievement of the technical result of the claimed invention is achieved by making an electrical cabinet (1) in the form of a vertically oriented metal parallelepiped.

Part of the cabinet (1) is divided into compartments (2), in which the sliding modules (3) are installed. The depth of the compartments is less than the depth of the electrical cabinet.

The side walls (4) of the compartments (2) are rectangular with a lower part in the form of a C-shaped profile. Inside the bend of each wall (4) are fixed rollers (5) made in a manner known from the prior art, for example, in the form of ball bearings. These rollers are used to facilitate the installation and removal of the withdrawable modules (3).

Here and hereinafter, the described parts have the necessary folds and holes for connecting the parts to each other using screws, rivets or another method known from the art that does not affect the functioning and achievement of the technical result of the invention.

The rear walls (6) of the compartments (2) are rectangular with grids (8) of insulating material installed in them.

The upper and lower walls (10) of the compartments (2) are rectangular with holes for ventilation and a T-shaped profile along the front edge.

Withdrawable modules (3) are made in the form of a parallelepiped. The drawer body consists of a rectangular front panel (11), a rectangular bottom (12), and a rectangular rear panel (13).

The front panel (11) is slightly larger than the opening in the compartment (2) of the electrical cabinet. This ensures that there are no gaps when the module (3) is installed in the compartment (2).

On the front panel (11) there are two handles (14) for installing and removing the module, next to one of the handles there is a mechanical push button (15) for operating the mechanism for blocking the module movement, a rotary handle (16) for controlling the device (17) (electric switch ), display panel (18). The rotary knobs (16) for operating the circuit breaker are a known solution, an accessory for circuit breakers produced by their manufacturers.

Z-shaped profiles are made on the sides of the bottom (12) of the module. The bends of the profiles (19) serve as guides, rolling on the rollers (5) of the side walls (4) of the cabinet compartments.

On the rear panel (13) of the module there are power electrical connectors (21) with flat contacts of the spring type (a solution known from the art, for example, patent DE 10106270 dated 01.02.2001). The contacts of the power connectors (21) are aligned with the holes in the insulating grids (8) on the rear walls of the compartments. When the module is installed in the compartment in the connected position, the contacts of the power connectors (21) pass through the holes in the grilles (8) and are connected to the buses (22) or power contacts (23), which are located in the electrical cabinet behind the rear wall (6) of the compartment ( 2). An example of the implementation of buses and power contacts is the system according to the patent RU 197562 dated 11.12.2019. The grilles (8) serve to protect against access to the buses (22) and power contacts (23) when the module is removed.

A protective box (24) in the form of a U-shaped frame, a rectangular mounting panel (25), and locking mechanisms are installed inside the drawer (3).

The protective box (24) covers from above the part of the drawer (3) with a depth of 3-10 cm, adjacent to the front panel (11). A protective box is required to ensure IP3x protection in the test and disconnected positions of the module.

In the hole on the side wall of the protective box (24), the secondary circuit connector (26) with long contacts is installed. The length of the contacts of the connector of the secondary circuits (26) is 1-3 cm longer than the length of the contacts of the power connectors (21). This ensures that the contact of the connector of the secondary circuits (26) is maintained after disconnecting the contacts of the power connectors (21), in the test position of the module (3). The counterpart (27) of the secondary circuit connector (26) is fixed coaxially in the hole on the side wall (4) of the electrical cabinet compartment.

The mounting panel (25) and the bottom (12) of the module can be used to install a switch, contactor and other electrical equipment connected to the electrical circuits of the electrical cabinet through the contacts of the power connectors (21) and the connector of the secondary circuits (26). The display panel (18) of the module can also accommodate electrical components for control, signaling and monitoring.

Inside the protective box (24) there is a mechanism for blocking the movement of the module, connected to the button (15) on the front panel (11). The button (15) has a pressure mechanism with a return spring. Its rod is connected to the pusher (28). The pusher (28) has two elongated slots (29) located at an angle to the stroke axis of the button (15). Two pins (30) pass through the slots (29), each of which is rigidly fixed to one of the two blocking plates of the module (31) of rectangular shape. The blocking plates of the module (31) are located near the bottom (12) of the module and are closed from above by a casing (32), which provides protection against contact with conductors, as well as positioning of the blocking plates (31). The ends (33) of the blocking plates (31) of the module pass through the slots (34) in the Z-shaped profiles of the bottom (12) of the module.

The button (15) from the outside has a through side hole (35). This hole (35) can be used to protect against unauthorized access by installing a padlock (36). The shackle of the padlock (36) does not allow pressing the button (15) and operating the module (3).

On the C-shaped profiles of the side walls (4) of the cabinet compartment, 3 holes (37) are made at different depths, on the same horizontal level with the ends (33) of the blocking plates (31) of the module. The depth of the holes (37) on the C-shaped profiles of the side walls (4) of the compartment is selected corresponding to the positions of the drawer connected, control and disconnected.

When the button (15) is not pressed, the ends (33) of the locking plates protrude beyond the boundary of the C-shaped profiles of the side walls (4) of the compartment. Thus, when the button (15) is depressed, the drawer (3) cannot be inserted into the compartment (2) and cannot be moved inside the compartment from one position to another.

When pressing the button (15), the slots (29) of the pusher press on the pins (30) of the locking plates (31), moving them towards the center of the axis of the button rod. In this case, the blocking plates (31) of the module are shifted towards the inside of the module. In this case, the ends (33) of the blocking plates (31) of the module do not reach the C-shaped profiles of the side walls (4) of the compartment. Thus, when the button (15) is pressed, the drawer (3) can be inserted into the compartment (2) and moved in it from one position to another.

When the button (15) is released, the spring returns it to its original position. In this case, the slots (29) of the pusher press on the pins (30), displacing the blocking plates (31) outside the module. In this case, the ends (33) of the blocking plates protrude beyond the boundary of the C-shaped profiles of the side walls (4) of the compartment. If the module (3) is installed in the compartment (2) in one of the positions, then the ends (33) of the locking plates enter the holes (37) in the C-shaped profiles of the side walls (4) of the compartment, fixing the module in this position. Thus, the withdrawable module (3) returns to the state where it cannot be moved from one position to another inside the compartment or removed from the compartment. If the module (3) was not installed in the compartment (2), then when the button (15) is released, it cannot be inserted into the compartment (2).

A cam (39) is mounted on the rod (38) of the rotary handle (16) of the switch, to which one of the ends of the switch blocking plate (40) is rotatably fixed to it. The other end of the switch interlock plate (40) goes through a slot in the push rod (28). When the switch handle (16) is in “off” position, the switch interlock plate (40) is inside the protective box (24) of the module (3) and does not interfere with pressing the button (15). Thus, when the switch is off, it is possible to control the mechanism for blocking the movement of the module and the withdrawable module (3) can be installed, removed and moved to various positions.

When the switch handle (16) is moved to the "on" position, the end of the switch blocking plate (40) enters the slot (42) in the side wall of the protective box (24) of the module, blocks the pusher (28) and the button (15) connected to the pusher. Thus, when the switch is on, the control of the blocking mechanism for the module movement (3) is excluded and the withdrawable module cannot be installed, removed and moved to different positions.

By pressing the button (15), the pusher (28) is displaced relative to the side wall of the protective box (24). In this case, the end of the switch blocking plate (40) inserted into the slot of the pusher (28) is displaced relative to the slot (42) in the side wall of the protective box (24). If, in this position, try to turn the circuit breaker handle to the "on" position, the end of the circuit breaker interlock plate (40) rests against the side wall of the protective box (24), blocking the breaker handle rotation. Thus, when the button (15) is pressed, turning the switch handle (16) to the “on” position is excluded.

The size of the module (3) must correspond to the size of the electrical equipment installed in it. With a relatively high current of the breaker installed in the withdrawable module, the required size of the module, the weight of the module and the weight of the equipment in it increase. The contacts of the power connectors (31) are designed for a certain current, for example, 250 A, therefore, for a current of more than 250 A, you must use 2 or more power connectors (31) at the input and output of the module. The high weight of the module and the resistance of the power connectors make it difficult to move the drawer between its positions. To solve this problem, it is preferable to place additional elements of the module screw drive in the cabinet compartment and in the module.

Namely, inside the module (3) at the bottom (12), it is preferable to rotatably fix the axis (43) of the module drive. Fix one end of the axle (43) near the front panel (11) of the module and make it in a shape adapted for rotation using a special wrench (44), for example, four-sided or hexagonal. Make the other end of the axle (43) passing through the hole in the rear panel (13) of the module (3) and protruding beyond it by 2-5 centimeters; thread (45) at the protruding end.

On the rear wall (6) of the electrical cabinet compartment, coaxially to the axis (43) of the module drive, install a sleeve with an internal thread (46), which can be made, for example, in the form of a rivet with an internal thread known from the art.

On the front panel (11) of the module, coaxially with the axis (43) of the module drive, make a round hole (47), which is closed from the inside of the panel (11) by mechanical shutters (48). Mechanical shutters (48) are made in the form of bent parts on the blocking plates (31) of the module.

The hole (47) is used to insert a wrench (44) inside, driving the module screw drive. The wrench (44) is made with a hole of shape and size corresponding to the end of the axis (43) of the module drive, for example, with an internal square or hexagon.

When closed, the shutters (48) cover the opening (47), which is necessary to ensure the IP3x degree of protection of the module. When the button (15) is pressed, the shutters (48) together with the blocking plates (31) are displaced to the sides, opening the hole (47) to access the axis (43) of the screw drive of the module. When you release the button (15), the shutters (48) move to the center, covering the hole (47) in the front panel (11).

By rotating the axis (43) of the screw drive of the module with a wrench (44), the operator screws the axis into the threaded bushing (46) or unscrews it. This creates a significant force to move the module (3) between its positions. Thus, the addition of the withdrawable module with a screw drive facilitates the movement of the module (3) between positions, ensures uniform and smooth connection and disconnection of the contacts of the power connectors (21).

It is also preferable for large sizes of withdrawable modules (3) to fix the L-shaped profiles (49) on the upper surface of the protective box (24) of the module. The profiles (49) increase the reliability and strength of the mounting panel (25) inside the module, providing additional points of its attachment. The profiles (49) also provide protection against the module tipping over when removing it due to the fact that when the module is tilted, the profiles (49) rest against the top wall (10) of the cabinet compartment (2). Additionally, the profiles (49) are used as handles when carrying the modules (3), providing convenience.

It is also preferable to additionally install on the outside on the side wall (4) of the compartment (2) of the cabinet limit switches (50) with a pivoting lever and a roller known from the art. Make a rectangular hole (51) in the side wall (4) of the compartment, insert the levers of the limit switches (50) inside the compartment. On the Z-shaped profile of the bottom (12) of the module, fix the plate (52) with a stepped cutout for interaction with the levers of the limit switches (50). Thus, when the drawer (3) is moved, the plate (52) will turn the levers of the limit switches (50), ensuring that they are turned on and off. This can be used for electrical control and signaling of the position of the withdrawable module (3), even remotely.

It is also preferable to make several breakable semicircular cutouts (53) along the upper edge of the T-shaped profile of the lower wall (10) of the compartment (2) of the electrical cabinet. Make the same number of round holes (54) coaxially in the bottom (12) of the module. By means of this device for coding the module (3) and compartment (2), it is possible to protect against erroneous insertion of the module into another compartment. To do this, break off one or more cutouts (53) on the T-shaped profile of the lower wall (10) of the compartment, screw one or more screws (55) into the holes (54) of the module bottom (3) from below. The same combination of cutouts (53) and screw heads (55) ensures that the module (3) and compartment (2) are coded. If the position of the screw heads (55) and the broken cutouts (53) match, the module (3) can be installed in the compartment (2). If the location of the cutouts (53) and screw heads (55) is different, the screw heads rest against the edge of the T-shaped profile of the bottom wall (10) of the compartment and prevent the module (3) from being inserted into the compartment (2).

The invention provides a sufficient number of reliable mechanical interlocks, the moving parts of which do not rise inside the module. All mechanisms inside the module move horizontally or rotate. Some of the mechanisms are covered with a casing. There are locks for the movement of the withdrawable module depending on the position of the circuit breaker control handle, blocking the circuit breaker control handle depending on the position in which the module is located. The reliability of the locks is achieved by blocking the mechanism control button, which completely excludes the blocking from not triggering. Reliability is also ensured by the reduction in the number of mechanical connections and the simplicity of the mechanisms. There is an additional blocking from unauthorized access due to the possibility of installing a padlock in the button hole.

The invention ensures that the module has a control position. This is due to the increase in the length of the contacts of the connector of the secondary circuits in comparison with the length of the contacts of the power connectors. At the same time, the location of the secondary circuit connector parts on the side wall of the module's protective box and the side wall of the compartment ensures its reliable operation. To disconnect and attach the connector of the secondary circuits, no separate operator action is required, only the movement of the module. The secondary connector does not have any mechanisms.

The claimed invention provides open access to the internal volume and mounting surfaces of the module after removal, due to the absence of top covers and side walls. The design of the protective box of the module allows easy dismantling if it is necessary to access the locking mechanisms and the display panel.

The claimed invention provides the IP3x degree of protection of the module in both the connected, test and disconnected positions. In the connected position, protection against penetration of bodies with a size of 2.5 mm or more is provided due to the gap between the front panel of the module and other external elements of the electrical cabinet less than 2.4 mm. In the test position and in the disconnected position, protection against penetration of bodies with a size of 2.5 mm or more is provided with a gap of less than 2.4 mm between the edges of the compartment, the protective box, the walls and the bottom of the module. Thus, tools and wires with a size of 2.5 mm or more cannot get inside the module in all three positions.

The invention provides a convenient and simple installation, removal and operation of the module due to the use of rollers for moving the module in the compartment, a screw drive of the module for moving between the positions of the module, L-shaped profiles for extraction, carrying and protection from overturning when removing.

The invention provides mechanical protection against erroneous installation of the removed module in another compartment by choosing different combinations of break-out cutouts on the horizontal T-shaped profile of the lower wall of the compartment and the heads of screwed-in screws in the bottom of the module.

The invention is illustrated by the following drawings:

in FIG. 1 shows an electrical cabinet with pull-out modules - a general front view;

in FIG. 2 shows a fragment of an electrical cabinet with a compartment installed in it, a dismantled compartment and a pull-out module taken out of the compartment - general view;

in FIG. 3 shows a part of the bottom of the module with a Z-shaped profile and the side wall of the compartment with a C-shaped profile with a roller - a front sectional view;

in FIG. 4 shows a drawer installed in a compartment - a general front view;

in FIG. 5 shows the drawer installed in the compartment - a general rear view;

in FIG. 6 shows the connector of the secondary circuits at the control position of the module (the contact in the connector of the secondary circuits is preserved) - side view in section;

in FIG. 7 shows a fragment of the front panel of the module with a button and an installed padlock (mechanical blocking of access to the module position control) - general front view;

in FIG. 8 shows the internal part of the module installed in the compartment and the locking mechanisms, the button is pressed, the handle of the switch is in the "off" position - a general front view;

in FIG. 9 shows the inner part of the module installed in the compartment, the pusher and the module blocking plates, the button is pressed - top view in section;

in FIG. 10 shows the internal part of the module installed in the compartment and the locking mechanisms, the button is released, the switch handle is in the "on" position - a general front view;

in FIG. 11 shows the inner part of the module installed in the compartment, the pusher and the blocking plates of the module, the button is released - a top sectional view;

in FIG. 12 shows the switch locking mechanism, the button is pressed, the switch handle in the "off" position - side view in section;

in FIG. 13 shows the switch locking mechanism, the button is pressed, the switch handle in the "off" position is a rear sectional view;

in FIG. 14 shows the switch locking mechanism, the button is pressed, the handle of the switch in the "off" position - top view in section;

in FIG. 15 shows the switch locking mechanism, the button is depressed, the switch handle in the "on" position is a side sectional view;

in FIG. 16 shows the circuit breaker locking mechanism, the button is released, the switch handle in the "on" position is a rear sectional view;

in FIG. 17 shows the circuit breaker locking mechanism, the button is depressed, the switch handle in the "on" position - top view in section;

in FIG. 18 shows the mechanism of the shutters of the screw drive of the sliding module (part of the front panel is hidden), the shutters are closed - general front view;

in FIG. 19 shows the mechanism of the shutters of the screw drive of the sliding module (part of the front panel is hidden), the shutters are open - general front view;

in FIG. 20 shows a slide-out module with a screw drive mechanism - a general rear view;

in FIG. 21 shows the front panel of the module with an access hole to the axis of the screw drive - general front view;

in FIG. 22 shows a fragment of the rear panel of the module with the axis of the screw drive and the rear wall of the compartment with a sleeve with an internal thread - a top sectional view;

in FIG. 23 shows a compartment with an installed pull-out module; limit switches are installed on the side wall of the compartment - general rear view;

in FIG. 24 shows a fragment of the side wall of the compartment with limit switch levers inserted into the hole and a fragment of a withdrawable module with a stepped plate - view from the inside of the module;

in FIG. 25 shows the bottom wall of the compartment with breakable semicircular cutouts in the T-shaped profile and a module with holes and screws in the bottom (the case of coincidence of screw heads and broken cutouts) - general view from the bottom;

in FIG. 26 shows a fragment of the bottom wall of a compartment with breakable semicircular cutouts in the T-shaped profile and a module with holes and screws in the bottom (the case of coincidence of screw heads and broken cutouts) - general view from below;

in FIG. 27 shows the lower wall of the compartment with breakable semicircular cutouts in the T-shaped profile and a module with holes and screws in the bottom (the case of a mismatch between the screw heads and broken cutouts) - general view from the bottom;

in FIG. 28 shows a fragment of the bottom wall of the compartment with breakable semicircular cutouts in the T-shaped profile and a module with holes and screws in the bottom (the case of a mismatch between the screw heads and broken cutouts) - general view from the bottom;

This invention makes it possible to create an electrical cabinet with withdrawable modules, which have a sufficient system of reliable mechanical interlocks, the moving parts of which do not rise, have a control position of the modules, provide access to the internal volume and mounting surfaces of the module after removal, provide the degree of protection of the module IP3x in the connected, control and disconnected positions, provide signaling of the module position, ensure simple and convenient installation and removal of modules, have mechanical protection against insertion of the removed module into another compartment.

Claims (5)

1. Metal electrical cabinet (1) in the shape of a parallelepiped, divided into compartments (2) with rectangular walls with drawers (3) with two handles (14), a rotary switch handle (16) and a push button (15) on the front panel the module, in the rear walls (6) of the compartments (2) there are grids (8) made of insulating material, on the rear panel (13) of the module there are power electrical connectors (21) with flat contacts of the spring type, coaxial with the holes in the insulating grids (8) on the rear walls of the compartments, a mounting panel (25) of rectangular shape is made inside the module, characterized in that the side walls (4) of the compartments (2) are made with the lower part in the form of a C-shaped profile, inside the bend of each wall (4) rollers ( 5), the upper and lower walls (10) of the compartments (2) are made with a T-shaped profile along the front edge, the front panel (11) of the module is made larger than the compartment opening, Z-shaped profiles are made on the sides of the bottom (12) of the module, behind the front panel vyt of the visible module, a protective box (24) is made in the form of a U-shaped frame with a depth of 3-10 cm, on the side wall of the protective box (24) there is a secondary circuit connector (26) with contacts 1-3 cm longer than the length of the contacts of the power connectors ( 21), a through side hole is made on the button (15) on the outside, the button has a pressure mechanism with a return spring, the button rod is connected to the pusher (28), the pusher (28) has two oblong-shaped slots (29) located at an angle to the stroke axis of the button rod (15), through the slots (29) two pins (30) pass, each of which is rigidly fixed on one of the two blocking plates of the module (31) of a rectangular shape, the blocking plates of the module (31) are located near the bottom (12) module and closed from above with a casing (32), the ends (33) of the blocking plates (31) of the module pass through the slots (34) in the Z-shaped profiles of the bottom (12) of the module, on the side walls (4) of the compartment at different depths there are 3 holes (37) on the same horizontal level with the end A cam (39) is installed on the rod (38) of the rotary handle (16) of the switch, one of the ends of the interlock plate of the switch (40) is pivotally fixed to the cam, the other end passes through the slot in the pusher (28), in the side wall of the protective box, a slot (42) is made coaxially with the slot in the pusher (28), the gap between the front panel of the module and the outer parts of the cabinet is less than 2.4 mm, the gap between the edges of the compartment and parts of the drawer in the positions control and disconnected is less than 2.4 mm. 2. Electrical cabinet according to claim 1, characterized in that inside the module (3) at the bottom (12) the module drive axis (43) is rotatably fixed, one end of the axis (43) is fixed near the front panel (11) of the module and has tetrahedral or hexagonal shape, the other end of the axis (43) is made passing through the hole in the rear panel (13) of the module (3) and protruding beyond it by 2-5 cm with a thread (45), on the rear wall (6) of the compartment coaxially with the axis ( 43) of the module drive, a bushing with an internal thread (46) is installed, on the front panel (11) of the module, a round hole (47) is made coaxially with the axis (43) of the module drive, mechanical shutters (48) are made on the blocking plates (31) of the module in the form bent parts. 3. Electrical cabinet according to claim 1, 2, characterized in that the drawer modules (3) have 2 L-shaped profiles (49) on the upper surface of the module's protective box (24). 4. Electrical cabinet according to any one of paragraphs. 1-3, characterized in that on the side wall (4) of the compartment (2) of the cabinet, limit switches (50) with a pivoting lever and a roller inserted inside the compartment are installed outside, a plate (52) is fixed on the Z-shaped profile of the bottom (12) of the module ) with a stepped cut. 5. Electrical cabinet according to any one of paragraphs. 1-4, characterized in that on the upper edge of the T-shaped profile of the lower wall (10) of the compartment (2) of the electrical cabinet there are several breakable semicircular cutouts (53), in the bottom (12) of the module the same number of circular holes (54 ).

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