JP2001256848A - Earth leakage circuit breaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promote a spread of an earth leakage circuit breaker that helps to prevent a fire in case of an earthquake by providing a seismic sensor switch in a distribution board circuit of an existing earth leakage circuit breaker such as for household use or the like. SOLUTION: A seismic sensor switch 2 with an earth 5 is provided outside an existing distribution board 1 or inside the board if the board has any extra space so that an existing earth leakage circuit breaker 3 provided in the distributing board is disconnected at the time of an earthquake.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth leakage breaker in which a seismic sensor switch is connected to an existing earth leakage breaker installed in a distribution board, so that the earth leakage breaker is mainly used for fire protection in the event of an earthquake. Regarding the shut-off device, the feature is that the installation cost of the device can be reduced by changing the connection method of the seismic sensor switch.

[0002]

2. Description of the Related Art Conventionally, this type of earth leakage breaker shut-off device with a seismic sensor switch is a unit type in which an earth leakage breaker and an earthquake sensor are integrally provided in a distribution board.

[0003]

A unit-type distribution board with a seismic sensor switch has the advantage that the earth leakage breaker can be shut off as soon as possible in the event of an earthquake, thereby preventing a fire accompanying energization immediately after the earthquake. In the case of a switchboard without a seismic sensor switch, it is necessary to purchase a new switchboard unit with a seismic sensor switch for fire protection or for safety, and installation is troublesome. There is a drawback that expenses are increased due to such reasons. For this reason, it is difficult for existing houses to spread. In particular, in ordinary households, there are few existing distribution boards with earth leakage breakers with seismic sensors, so it is strongly desired that the distribution boards be equipped with seismic sensor switches to prevent fires. It has become. In view of the above, the problem to be solved by the present invention is to facilitate the attachment of the seismic sensor switch to the existing distribution board with the earth leakage breaker, thereby promoting the spread of this type of shut-off device. It is in.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a seismic sensor switch having a ground, which is installed outside or inside an existing distribution board, and is installed inside the distribution board. The present invention provides an earth leakage breaker shut-off device characterized in that the earth leakage breaker is connected to the circuit of the earth leakage breaker.

[0005] As described above, the circuit breaker of the present invention utilizes the existing distribution board with the earth leakage breaker, and the seismic sensor switch is provided outside the body of the distribution board or when there is room in the body. It is possible to improve the existing shut-off device with a seismic sensor switch by a simple work of installing and connecting this to the circuit of the earth leakage breaker. Therefore, according to the present invention, it is not necessary to purchase a distribution board unit with a seismic sensor switch, and the construction is simple, so that the installation cost can be reduced. Therefore, it can be greatly expected that this type of blocking device will be widely used in general homes and the like.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment in which a seismic sensor switch 2 is installed outside the body of the existing switchboard 1. FIG. 2 shows a case where there is room in the body of the existing switchboard 1. 2 shows a second embodiment in which a seismic sensor switch 2 is provided inside the housing. FIG. 3 shows the seismic sensor switch 2
Is a conventional example of a unit-type distribution board which is previously installed in the body of the distribution board 1.

[0007] In the figure, reference numeral 3 denotes an earth leakage breaker, and 4 denotes a branch breaker connected to the earth leakage breaker 3, each of which is wired with a conventionally known member. In the case of the first embodiment in which the switch is installed outside the body of the distribution board 1, the seismic sensor switch is connected to the branch breaker 4, and the ground 5 is taken. In the case of the second embodiment, that is, when there is an empty branch breaker,
The relevant branch breaker is replaced with the seismic sensor switch 2 and the ground 5 is also taken. The detailed configuration and operation of the seismic sensor switch 2 are well known in the art, and a description thereof will be omitted. Further, it is advantageous to use a grounded outlet for the connection of the seismic sensor switch in the first embodiment.

[0008]

As described above, the shut-off device according to the present invention, as described above, connects the seismic sensor switch using the existing distribution board as it is and grounds it. Therefore, the materials to be purchased for the improvement and the construction cost required for the installation are extremely low as compared with the case of replacing the unit type distribution board. Therefore, the spread of this type of blocking device can be promoted. The present invention has extremely excellent effects as described above.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a configuration of a first embodiment;

FIG. 2 is an explanatory diagram illustrating a configuration of a second embodiment;

FIG. 3 is an explanatory diagram showing a configuration of a conventional example.

[Explanation of symbols]

 1 distribution board 2 seismic sensor switch 3 earth leakage breaker 4 branch breaker 5 ground

Claims (1)

[Claims] 1. A seismic sensor switch having a ground,
An earth leakage breaker shut-off device, which is installed outside or inside an existing distribution board and connected to a circuit of an earth leakage breaker installed inside the distribution board.