RU2771860C1 - Automatic switch with a generator of fire extinguishing aerosol (options) - Google Patents

Abstract

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering and energy and can be used for prompt emergency shutdown of electrical equipment when exposed to high temperatures. According to the invention, simultaneous use of the automatic phase shutdown mechanism and the zero N shutdown mechanism as part of the circuit breaker, as well as the fire extinguishing aerosol generator (EAG) together with the electric EAG igniter, the initiating temperature-sensitive device (t1) and the shutdown temperature-sensitive device (t2) located in the zone exposure to heat generated during the operation of the fire-extinguishing aerosol generator module (EAG); in this case, the initiating temperature-sensitive device (t2) and the switching-off temperature-sensitive device (t1) are connected in series with each other.

EFFECT: ensuring reliable shutdown of electrical equipment and increasing the speed of primary fire extinguishing.

4 cl, 8 dwg

Description

Technical field

The claimed group of inventions relates to the field of electrical engineering and energy and can be used in the form of an automatic switch (automatic device) or an introductory automatic switch (introductory automatic device) of electrical panels for prompt emergency shutdown of electrical equipment using a thermal or electromagnetic release without initiating a fire extinguishing system or when exposed to high temperatures , for example, in case of fire, when initiating an aerosol fire extinguishing system (extinguishing a fire source using a fire extinguishing aerosol generator (GOA) and simultaneously opening the line with a circuit breaker mechanism. In this case, the device is designed to be mounted on a DIN rail.

State of the art

From the prior art, circuit breakers (automatic devices) are known that are installed in an electrical panel on a DIN rail and perform the functions of a fuse in the event of a short circuit or a prolonged overload of the power line. For example, such as circuit breakers and molded case switch-disconnectors for 16-630 A, up to 690 V Schneider Electric's Pact series, product catalog 2021 (available online at https://download.schneider-electric.com ).

However, such well-known solutions do not provide opening of power circuits in the event of a fire in electrical panels and do not have the ability to extinguish fire in electrical panels.

From the patent prior art, a solution is known, which is a pyrotechnic disconnector of an electrical circuit (RU 139706 U1, 04/20/2014). The known disconnector contains a housing in which a conductor and a pyrotechnic charge are located in close proximity or in contact with each other, with a melting temperature of the conductor lower than the combustion temperature of the pyrotechnic charge, while the pyrotechnic charge is launched using a thermal cord or from a fire detector.

The technical result, to which the said solution is aimed, is to reliably open the electrical circuit (turn off the power source) in the event of a fire or its threat, which prevents the development of a fire due to a short circuit.

However, the known solution, as well as the above, does not provide the possibility of eliminating the source of ignition. In addition, the functioning of the disconnector when it is activated by a fire detector depends on the performance of external means, which reduces the reliability of its operation.

It should also be noted that the known solution does not have a response time, since for its operation it is necessary to reach the activation temperature of the thermal cord, and the source of this temperature is external, i.e. provided by the source of ignition. Obviously, before this temperature is reached, the fire will spread unhindered, causing damage to surrounding equipment.

To ensure the possibility of not only opening circuits, but also implementing primary automatic fire extinguishing, the prior art uses a combination of an opening means and a fire extinguishing means, as presented, for example, in the patent source CN 210040091 U, 02/07/2020.

In this solution, the circuit breaker contains the main body, as well as a container with a fire extinguishing agent and a supercharger attached to it. The control of the blower operation and the spraying of the fire extinguishing composition is provided when a certain temperature is reached due to a thermal switch located on the switch body.

The known solution eliminates the above-mentioned shortcomings of the prior art in terms of providing the primary fire extinguishing function. Despite this, the known solution has a number of disadvantages, which are as follows.

The complexity and bulkiness of the design of the specified switch prevents its placement in a typical housing of electrical devices for installation on a DIN rail in an electrical panel. At the same time, the placement of means capable of extinguishing a fire source in an electrical panel is critically important, since in a closed limited space of a shield with densely arranged electrical modules, fire spreads rapidly, which leads to the emergence of secondary fires due to a short circuit of wires with burnt or melted insulation and irreversible damage to modules.

In addition to the above, the known solution, as well as the one discussed above according to patent RU 139706 U1, does not have a response time, since for its operation it is necessary to reach the activation temperature of the thermal switch, and this temperature is determined by an external source, i.e. the seat of the fire itself. As a result, before the fire extinguishing agent operates, significant damage to the electrical modules located in the electrical panel is possible.

From the patent prior art, a solution is known, which is an autonomous fire extinguishing device with fixation on a DIN rail (utility model patent No. 204767 dated 06/09/21). The known device contains a housing in which the module of the fire extinguishing aerosol generator with a thermochemical initiator is located.

The known solution eliminates the above-mentioned shortcomings of the prior art in terms of providing the primary fire extinguishing function. Despite this, the known solution has a number of disadvantages, which are as follows.

The stand-alone device is designed as a separate module and does not have the ability to open power lines, which significantly increases the likelihood of re-ignition of electrical wiring in electrical cabinets and increases the likelihood of electric shock to people.

The technical problem is to overcome the above disadvantages of analogues.

The technical result consists in increasing the efficiency of primary fire extinguishing with an increase in the efficiency of preventing the spread of fire in a confined space, in particular, such as an electrical panel, with simultaneous opening of the electrical circuit, while the described device can open the electrical circuit in the event of a short circuit or prolonged excessive load without initiating an aerosol fire extinguishing system , operating as a typical circuit breaker for single or three phase connections.

Disclosure of invention

The specified technical result is achieved in a circuit breaker with a fire-extinguishing aerosol generator (GOA) according to the first version, made in a housing with mounting on a DIN rail, containing power electrical terminals placed in the housing for connecting a phase wire (phase terminals), electrical terminals for connecting a neutral wire N (neutral terminals), automatic phase disconnection mechanism and neutral wire disconnection mechanism N, GOA electric igniter, initiating temperature-sensitive device (t1) e.g. the mechanism for automatic phase disconnection and the mechanism for disconnecting the neutral wire, moreover, the input phase and input zero N terminals are connected through the control conductors of the GOA electric igniter to the initiating temperature-sensitive device (t1) and the GOA electric igniter, which connected with the GOA module, and the disconnecting temperature-sensitive device (t2) is located in the aerosol emission zone and is connected through conductors to the automatic phase disconnection mechanism and the neutral wire disconnection mechanism N, holes for the aerosol outlet are made in the lower part of the housing, holes for the correct operation of the initiating temperature-sensitive device (t1), and the response temperature of the initiating thermally sensitive device (t1) is less than the temperature of the shutdown thermally sensitive device (t2) and is determined by the requirements for the response temperature of the fire extinguishing aerosol generator (GOA).

In a developing embodiment, when using the device in three-phase networks, the case additionally contains phase terminals (two more pairs) corresponding to these phases (“B”, “C”) with devices for automatically disconnecting these phases connected by a single lever for turning the machine on and off with phase “A” automatic disconnection mechanism and neutral wire disconnection mechanism N.

The specified technical result is also achieved in a circuit breaker with a fire-extinguishing aerosol generator (GOA), according to the second version, made in a housing with mounting on a DIN rail, containing power electrical terminals placed in the housing for connecting a phase wire (phase terminals), electrical terminals for connecting neutral wire N (zero terminals), automatic phase disconnection mechanism and neutral wire disconnection mechanism N, electric igniter GOA, initiating temperature-sensitive device (t2), for example, a thermal relay, for starting the electric igniter GOA, a disconnecting temperature-sensitive device connected to it in series (t1) , for example, a thermal relay for controlling the shutdown of the automatic phase shutdown mechanism and the neutral wire shutdown mechanism, moreover, the input phase “A” and the input “zero” N terminals are connected through control conductors to the GOA electric igniter connected to the GOA module, initiating them with a temperature-sensitive device (t2) and a disconnecting temperature-sensitive device (t1), and the disconnecting temperature-sensitive device (t1) is additionally connected through conductors to the automatic phase disconnection mechanism and the neutral wire disconnection mechanism N, holes for the aerosol outlet are made in the lower part of the housing, holes for the correct operation of the initiating temperature sensing device (t2) and the tripping temperature sensing device (t1), and the response temperature of the tripping temperature sensing device (t1) is lower than the temperature of the initiating temperature sensing device (t2).

In a developing embodiment, when using the device in three-phase networks, the case additionally contains phase terminals (two more pairs) corresponding to these phases (“B”, “C”) with devices for automatically disconnecting these phases connected by a single lever for turning the machine on and off with phase “A” automatic disconnection mechanism and neutral wire disconnection mechanism N.

Further in the description, information is provided regarding the implementation of device options and confirmation of the achievement of the specified technical result.

Implementation of the invention

In accordance with Option 1, the following provides details of an advantageous embodiment of the device, not intended to limit the scope of the requested protection, as defined by the features of the independent claim.

In order to better understand the essence of the patent, the description makes reference to the explanatory drawing (Fig. 1, Fig. 2, Fig. 3, Fig. 4), according to which the external view of the housing with a cut in a single-phase version (Fig. 1), the diagram circuit breaker (automatic machine) with a fire extinguishing aerosol generator in a single-phase version (Fig. 2), the appearance of the case with a cut in a three-phase version (Fig. 3), a diagram of an automatic switch (automatic device) with a fire extinguishing aerosol generator in a three-phase version (Fig. 4) , as well as a set of elements in a single-phase version (Fig. 1, Fig. 2) and a three-phase version (Fig. 3, Fig. 4) located in the circuit breaker with GOA.

In a preferred embodiment, the proposed product is mounted in an electrical cabinet on a DIN rail and is an independent device. The product can be used both in single-phase and three-phase networks, for which additional pairs of phase terminals B-B’ and C-C’ are installed in it.

According to FIG. 1 and FIG. 2, in the product case there are: a pair of phase terminals (14-14') and a pair of neutral terminals (13-13'). The device is connected to the device through the phase terminals, the mechanism of the automatic phase switch (1), the power wires of the phase, and through the zero terminals N - the mechanism of the zero switch (2), the neutral wire. On the underside of the housing according to Fig. 1 and FIG. 2, outlet holes (7) are made for the exit of the aerosol formed during the operation of the GOA module (12), as well as inlet holes (6) for the correct operation of the initiating temperature-sensitive device (t1) (5).

Preferably in the center of the case, mechanisms for automatically switching off the phase and neutral wire N are fixed, and a fire-extinguishing aerosol generator (GOA) (12) is fixed in the side case. GOA are widespread in the prior art. As an example, the principle of operation of a generator based on the inhibition of chemical processes occurring in a flame by highly dispersed particles (aerosol) of alkali metal salts, released during the combustion of an aerosol-forming charge and capable of being in a suspended state for a long time, can be considered, which ensures the elimination of the focus ignition. At the same time, it is known that during the operation of the GOA, a zone with a significantly elevated temperature (for example, more than 300 °C) is provided around it. This effect is used in a device to increase the efficiency of primary fire extinguishing with an increase in the efficiency of preventing the spread of fire in a confined space, and initiating the phase shutdown mechanism (1) and the zero N shutdown mechanism (2).

In the immediate vicinity of the GOA module (12) in the device case, a tripping temperature-sensitive device (t2) (8) is located (can be made with an electrical power and control module - not shown) according to Fig. 1 and FIG. 2, which is responsible for generating a signal to turn off the automatic phase switch and to turn off zero N in the event of an electrical panel fire and the GOA module (12) is triggered using the GOA electric initiator (9), the signal for which is generated by the initiating temperature-sensitive device (t1) (5) (may be made with an electrical power and control module - not shown). The choice of distance from the tripping temperature-sensitive device (t2) (8) to the GOA module (12) is selected from the condition that when the GOA module (12) is triggered, the resulting temperature ensures the tripping of the tripping temperature-sensitive device (t2) (8) due to overheating (for example, when 100 °C), thereby closing the tripping temperature-sensitive device (t2) (8) forming a signal to turn off the mechanism for automatically disconnecting the phase and neutral wire N (4). Thus, the term "close proximity" in the framework of this application should be understood as such an arrangement in which the heat from the operating module of the GOA (12) could ensure the operation of the tripping temperature-sensitive device (t2) (8).

Further, as shown in FIG. 1 and FIG. 2, an initiating temperature sensing device (t1) (5) is housed in the housing. The properties of the initiating temperature-sensing device (t1) (5) are chosen in such a way that its operation is ensured until the response temperature of the tripping temperature-sensitive device (t2) (8) is reached. For example, the response temperature of the initiating temperature-sensitive device (t1) (5) can be selected in a discrete range (for example, 60°C, 70°C, 80°C) depending on the placement conditions of the device. The initiating temperature-sensitive device (t1) (5) can additionally be equipped with an electrical power supply and control module (not shown) of the GOA electric igniter (9).

The proposed device works as follows.

In the normal state of Fig. 1, fig. 2 phase terminals (14-14') are connected to the automatic shutdown mechanism. This ensures the flow of electric current along the circuit: Terminal (14) - Conductor - Automatic disconnection mechanism (1) - Conductor - Terminal (14’). Also, the zero terminals (13-13 ') are interconnected by the corresponding conductors through the zero disconnection mechanism N (2), ensuring the operability of the power electrical panel. Simultaneously with the above, the input terminal (14 phases “A”) and the input terminal (13 ‘neutral wire’ N) are connected through the corresponding control conductors to the initiating temperature-sensitive device (t1) (5) and the GOA electric igniter (9) according to Fig. 1 and FIG. 2.

With a three-phase version of the device of Fig. 3, fig. 4 are added circuits for the flow of current in phase “B”: Terminal (14) - Conductor - Automatic opening mechanism (15) - Conductor - Terminal (14') and phase “C”: Terminal (14) - Conductor - Automatic opening mechanism (16 ) - Conductor - Terminal (14').

When the temperature rises in the electrical panel (ignition of the electrical panel) in which the device is installed to a predetermined critical value determined by the properties of the initiating temperature-sensitive device (t1) (5), (with or without a power supply and control system) (for example, 60 ° C , 70°C, 80°C), heated air enters the body (3) of the device through the hole (6), due to which the initiating temperature-sensitive device (t1) (5) connects the GOA electric igniter (9), (through the power supply system or without it) with an input terminal (14 phase “A”) and an input terminal (13 “neutral wire” N), thereby ensuring the flow of electric current capable of starting the GOA electric igniter (9) and initiating the operation of the GOA module (12).

At the start of operation of the GOA module (12) from the housing (3) through the outlet holes (7) according to Fig. 1 and FIG. 2, the fire-extinguishing aerosol begins to emerge in the form of a gaseous mixture, filling the protected volume of the electrical panel and suppressing the combustion of the components of the electrical panel. At the same time, a heating zone is formed around the GOA module (12) up to a temperature of, for example, over 300 °C, acting with its heat flow on the tripping temperature-sensitive device (t2) (8), which, heating up above the temperature of its own overheating operation (for example, more than 100 °C), is triggered, thereby generating a signal for opening the mechanism for automatic shutdown of phase “A” (1) and the mechanism for zero - zero shutdown N (2), and with a three-phase implementation, phase “B” (15) and phase “C” are additionally opened (16) according to FIG. 3 and FIG. 4.

Thus, when the initiating temperature sensing device (t1) (5) according to FIG. 1 and FIG. 2, as well as Fig. 3 and 4 in case of three-phase execution, during the ignition of the electrical panel, the shield is simultaneously extinguished using the GOA module (12) and phase “A” (1) or phases “A”, “B”, “C” (1, 15, 16) with a three-phase version along the line of phase terminals (14-14') and neutral wire N (2) along the line of zero terminals N (13-13') according to Fig. 1, fig. 2, fig. 3, fig. 4, which can also be attributed to the advantage of the proposed device in comparison with the solutions known from the prior art.

A distinctive feature of the device is also the ability to turn off the power part of the electrical panel in case of a short circuit or a long-term exceeding load of the power line without initiating the GOA module (12) with the possibility of subsequent cocking the circuit breaker (automatic device) to its original state using the mechanism (4) and continuing the operation of the device.

In turn, the use of the GOA module (12) as a means of ensuring the operation of the automatic switch (machine) also provides acceleration of the opening of electrical circuits before a short circuit or overvoltage occurs, thereby preventing the occurrence of secondary fires, since the time required to reach the operating temperature tripping temperature-sensitive device (t2) (8) due to the operation of the GOA module (seconds) is significantly less compared to if the operation of the tripping temperature-sensitive device (t2) (8) would be provided by the heat of an external source (i.e. fire seat ).

Thus, only through the joint use of the above means and their operation through these connections, it is possible to achieve the technical result to which the proposed device is directed.

The device can be implemented using means and methods known from the prior art for a specialist, and the analysis of the prior art did not reveal solutions in it that would have all the essential features presented in the formula.

In accordance with option 2, in order to better understand the essence of the patent, references are made in the description to the explanatory drawing (Fig. 5, Fig. 6, Fig. 7, Fig. 8), according to which the external view of the housing with a cut in a single-phase version ( Fig. 5), a diagram of an automatic switch (automatic device) with a fire extinguishing aerosol generator in a single-phase version (Fig. 6), an external view of the housing with a cut in a three-phase version (Fig. 7), a diagram of an automatic switch (automatic device) with a fire extinguishing aerosol generator in a three-phase version (Fig. 8), as well as a set of elements in a single-phase version (Fig. 5, Fig. 6) and a three-phase version (Fig. 7, Fig. 8) located in the circuit breaker with GOA.

In a preferred embodiment, the proposed product is mounted in an electrical cabinet on a DIN rail and is an independent device. The product can be used both in single-phase and three-phase networks, for which additional pairs of phase terminals B-B’ and C-C’ are installed in it.

According to FIG. 5 and FIG. 6, in the product case there are: a pair of phase terminals (14-14') and a pair of neutral terminals (13-13'). The device is connected to the device through the phase terminals, the mechanism of the automatic phase switch (1), the power wires of the phase, and through the zero terminals N - the mechanism of the zero switch (2), the neutral wire. On the underside of the housing according to Fig. 5 and FIG. 6, outlet holes (7) are made for the exit of the aerosol formed during the operation of the GOA module (12), as well as inlets (6) for the correct operation of the shutdown temperature-sensitive device (t1) (5) and the initiating temperature-sensitive device (t2) (8).

Preferably in the center of the case, mechanisms for automatically switching off the phase and neutral wire N are fixed, and a fire extinguishing aerosol generator (GOA) (12) with an electric igniter GOA (9) is fixed in the side case. GOA are widespread in the prior art. As an example, the principle of operation of a generator based on the inhibition of chemical processes occurring in a flame by highly dispersed particles (aerosol) of alkali metal salts, released during the combustion of an aerosol-forming charge and capable of being in a suspended state for a long time, can be considered, which ensures the elimination of the focus ignition.

Tripping temperature-sensitive device (t1) (5) (can be made with an electrical power supply and control module - not shown) according to FIG. 5 and FIG. 6, is responsible for generating a signal to turn off the automatic phase switch and turn off zero N in the event of a fire in the electrical panel.

Further, as shown in FIG. 5 and FIG. 6, an initiating temperature sensing device (t2) (8) is housed in the housing. The properties of the initiating temperature-sensitive device (t2) (8) are chosen in such a way that its operation is ensured after reaching the operating temperature of the tripping temperature-sensitive device (t1) (5) installed next to it and connected in series with it in the electrical circuit. For example, the response temperature of the tripping temperature-sensing device (t1) (5) can be selected in a discrete range (for example, 60°C, 70°C, 80°C) depending on the device placement conditions, and the response temperature of the initiating temperature-sensitive device (t2) (8) can be selected in a range (for example, 90°C, 100°C, 110°C). The initiating temperature sensing device (t2) (8) can additionally be equipped with an electrical power supply and control module (not shown).

The proposed device according to the second embodiment works as follows.

In the normal state of Fig. 5, fig. 6 phase terminals (14-14') are connected to the automatic shutdown mechanism. This ensures the flow of electric current along the circuit: Terminal (14) - Conductor - Automatic disconnection mechanism (1) - Conductor - Terminal (14’). Also, the zero terminals (13-13 ') are interconnected by the corresponding conductors through the zero disconnection mechanism N (2), ensuring the operability of the power electrical panel. Simultaneously with the above, the input terminal (14 phases “A”) and the input terminal (13 “neutral wire” N) are connected through the corresponding control conductors to the initiating temperature-sensitive device t2 (8), the disconnecting temperature-sensitive device t1 (5) and the electric igniter GOA ( 9) according to FIG. 5 and FIG. 6. At the same time, the disconnecting temperature-sensitive device (t1) (5) is connected with one of its outputs through the control conductor to the output terminal of phase “A” (14'), and with the second output through the control conductor with the input terminal (13 “neutral wire” N): Output terminal (14') phase “A” - Thermal cut-off device (t1) (5) - Input terminal (13 “neutral” wire N).

With a three-phase version of the device of Fig. 7, fig. 8 current flow circuits are added in phase “B”: Terminal (14) - Conductor - Automatic opening mechanism (15) - Conductor - Terminal (14') and phase “C”: Terminal (14) - Conductor - Automatic opening mechanism (16 ) - Conductor - Terminal (14').

When the temperature rises in the electrical panel (electric panel fire) in which the device is installed to a predetermined critical value determined by the properties of the tripping temperature-sensitive device (t1) (5), (with or without a power supply and control system) (for example, 60 ° C , 70°C, 80°C), heated air enters the body (3) of the device through the hole (6), due to which the tripping temperature-sensitive device (t1) (5) is triggered, which leads to the disconnection of the phase “A” circuit breaker and neutral wire “N”, and with a three-phase implementation, phase “B” and phase “C” are additionally opened according to Fig. 7 and FIG. eight.

If the fire continues to develop with the power off of devices connected after the automatic switch (automatic device) with a fire extinguishing aerosol generator, and a further increase in temperature, the initiating temperature-sensitive device (t2) (8) is activated, as a result of which the electric current briefly begins to flow through the circuit: Input terminal (14) - Conductor - GOA electric igniter (9) - Initiating temperature sensing device (t2) (8) - Tripping temperature sensing device (t1) (5) - Conductor - Input terminal (13), thereby providing a short-term flow of electric current capable of start the GOA electric igniter (9) and initiate the operation of the GOA module (12). After initiation of the GOA electric igniter (9) it opens the circuit Input terminal (14) - Conductor - GOA electric igniter (9) - Initiating temperature sensing device (t2) (8) - Tripping temperature sensing device (t1) (5) - Conductor - Input terminal (thirteen).

At the start of operation of the GOA module (12) from the housing (3) through the outlet holes (7) according to Fig. 5 and FIG. 6, the fire-extinguishing aerosol starts to come out in the form of a gaseous mixture, filling the protected volume of the electrical panel and suppressing the combustion of the components of the electrical panel.

Thus, when the tripping temperature sensing device (t1) (5) and the initiating temperature sensing device (t2) (8) operate in succession, according to FIG. 5 and FIG. 6 as well as FIG. 7 and FIG. 8 with a three-phase version, during the ignition of the electrical panel, the shield is simultaneously extinguished using the GOA module (12) and phase “A” (1) or phases “A”, “B”, “C” (1, 15, 16) are opened with a three-phase version along the line of phase terminals (14-14') and neutral wire N (2) along the line of zero terminals N (13-13') according to Fig. 5, fig. 6, fig. 7, fig. 8, which can also be attributed to the advantage of the proposed device in comparison with the solutions known from the prior art.

A distinctive feature of the device is also the ability to turn off the power part of the electrical panel in case of a short circuit or a long-term exceeding load of the power line without initiating the GOA module (12) with the possibility of subsequent cocking the circuit breaker (automatic device) to its original state using the mechanism (4) and continuing the operation of the device.

Thus, only through the joint use of the above means and their operation through these connections, it is possible to achieve the technical result to which the proposed device is directed.

The device can be implemented using means and methods known from the prior art for a specialist, and the analysis of the prior art did not reveal solutions in it that would have all the essential features presented in the formula.

Claims (4)

1. A circuit breaker with a fire extinguishing aerosol generator (GOA), made in a housing mounted on a DIN rail, containing power electrical terminals placed in the housing for connecting a phase wire, electrical terminals for connecting a neutral wire, a fire extinguishing aerosol generator module (GOA), electric GOA igniter, initiating the temperature-sensitive device (t1) and turning off the temperature-sensitive device (t2), moreover, the phase terminals are connected to each other through an automatic phase disconnection mechanism, the zero terminals are interconnected through the neutral wire disconnection mechanism N, the phase terminal, which is phase “A” and zero N terminal through the control wires of the GOA electric igniter are connected to the initiating temperature-sensitive device (t1) and the GOA electric igniter connected to the GOA module, the disconnecting temperature-sensitive device (t2) is located in close proximity to the GOA module and connected through conductors to by the automatic phase shutdown mechanism and the zero N shutdown mechanism, openings for the aerosol outlet are made in the lower part of the housing, and the response temperature of the initiating temperature-sensitive device (t1) is less than the response temperature of the shutdown temperature-sensitive device (t2). 2. The device according to claim 1, characterized in that it additionally contains two pairs of phase terminals: phases “B” and “C”, connected to each other and the mechanism of phase “A” by automatic phase switching mechanisms. 3. A circuit breaker with a fire extinguishing aerosol generator (GOA), made in a housing mounted on a DIN rail, containing power electrical terminals placed in the housing for connecting a phase wire, electrical terminals for connecting a neutral wire, a fire extinguishing aerosol generator module (GOA), electric GOA igniter, initiating a temperature-sensitive device (t2) disconnecting a temperature-sensitive device connected to it in series (t1), and the phase terminals are connected to each other through an automatic phase disconnection mechanism, the zero terminals are interconnected through the neutral wire disconnection mechanism N, the phase terminal, which is the phase “ A”, and the zero N terminal through the control wires of the GOA electric igniter are connected to the initiating temperature-sensitive device (t2), the shutdown temperature-sensitive device (t1) and the GOA electric igniter connected to the GOA module, which turns off the heat-sensitive device (t1) directly connected through conductors to the automatic phase cut-off mechanism and zero N cut-off mechanism, openings for aerosol outlet are made in the lower part of the housing, and the operation temperature of the tripping temperature-sensitive device (t1) is less than the operation temperature of the initiating temperature-sensitive device (t2). 4. The device according to claim 3, characterized in that it additionally contains two pairs of phase terminals: phases “B” and “C”, connected to each other and the mechanism of phase “A” by automatic phase switching mechanisms.

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