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Overload signal output device of thermomagnetic molded case circuit breaker

A technology of molded case circuit breaker and signal output, applied in emergency protection devices, circuits, parts of protection switches, etc., to achieve the effects of ingenious design, simple structure, reliable and stable operation

Active Publication Date: 2016-08-17
无锡新宏泰电器科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the low-voltage power distribution design specification, when the loss caused by sudden power failure is greater than that caused by overload, the overload protection of the circuit breaker should act on the signal instead of cutting off the power supply.

Method used

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  • Overload signal output device of thermomagnetic molded case circuit breaker
  • Overload signal output device of thermomagnetic molded case circuit breaker

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Experimental program
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Embodiment Construction

[0015] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0016] see figure 1 and figure 2 As shown, in this embodiment, a thermomagnetic molded case circuit breaker overload signal output device includes a mounting frame 1, a micro switch 2, a draw bar 3 and a bimetal 4, and the micro switch 2 is fixedly installed on the On the mounting frame 1, the traction rod 3 has a "Z" shape as a whole, one end of which is a contact plate 30 as a contact part, and the other end is a connecting plate 31 as a connection part, and the contact plate 30 is held on the Set the position so that when the traction rod 3 moves, it drives the pressure plate 30 to touch the micro switch 2, so that the micro switch 2 sends an overload signal. The bimetal 4 is connected to the connecting plate 31 through a connecting assembly.

[0017] The connecting assembly includes an adjus...

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PUM

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Abstract

The invention discloses an overload signal output device of a thermomagnetic molded case circuit breaker. The overload signal output device comprises an installation frame, a microswitch, a draw bar and a bimetal piece, wherein the microswitch is installed on the installation frame; the draw bar comprises a touch-pressing part and a connecting part, the bimetal piece is connected with the draw bar through the connecting part, and when a current is overloaded, the bimetal piece is bent and drives the touch-pressing part of the draw bar to touch the microswitch, and the microswitch sends out an overload signal. According to the overload signal output device of the thermomagnetic molded case circuit breaker, when the current of the breaker is overloaded, the bimetal piece is bent and drives the draw bar to touch-press the microswitch so that the breaker can send out the overload signal. The overload signal output device is simple in structure, ingenious in design and small in size, and the whole action mechanism runs reliably and stably.

Description

technical field [0001] The invention relates to a thermomagnetic molded case circuit breaker, in particular to an overload signal output device for a thermomagnetic molded case circuit breaker. Background technique [0002] At present, most of the circuit breakers on the market have overload, short circuit and leakage protection functions. However, according to the low-voltage power distribution design specification, when the loss caused by sudden power failure is greater than that caused by overload, the overload protection of the circuit breaker should act on the signal instead of cutting off the power supply. Therefore, there is a need for a circuit breaker with an overload alarm signal on the market, which outputs an overload signal when the line is overloaded. Contents of the invention [0003] The object of the present invention is to provide an overload signal output device for a thermal-magnetic plastic case circuit breaker, which sends an overload signal when the...

Claims

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Application Information

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IPC IPC(8): H01H71/04H01H71/10
CPCH01H71/04H01H71/1054H01H2071/042
Inventor 尤凯伦赵敏海杨杰
Owner 无锡新宏泰电器科技股份有限公司