Novel residual-current circuit breaker

Abstract

The invention relates to a novel residual-current circuit breaker. The novel residual-current circuit breaker is composed of breaker modules and an electric leakage module. The two sides of the electric leakage module are provided with the breaker modules, an electromagnetic coil is fixed into shells of the breaker modules through a supporting plate, the supporting plate is embedded in the position between the electromagnetic coil and an arc extinction sheet, the end, close to a wire outlet terminal, of the supporting plate is fixedly provided with a transverse metal sheet in a welding mode, one end of the metal sheet is connected with the electromagnetic coil in series, the other end of the metal sheet is connected with an upper wire in a welding mode, the fixing end of the wire outlet terminal is connected with a lower wire in a welding mode, the corresponding position of the spliced plane of the breaker modules and the electric leakage module or the corresponding position of the spliced plane of the breaker modules are provided with wire through holes, and the upper wire and the lower wire enter the electric leakage module through the wire through holes and wind around a zero sequence mutual inductor to be welded and fixed. According to the design, wiring is shortest, the structure is more reasonable, and the appearance is symmetrical and attractive.

Description

technical field [0001] The invention belongs to the field of circuit breakers, and relates to a leakage circuit breaker, in particular to a novel leakage circuit breaker. Background technique [0002] The leakage circuit breaker includes a leakage module and a circuit breaker. Both the live wire and the neutral wire of the leakage circuit breaker must pass through the zero-sequence transformer, and the zero-sequence transformer is usually set in the leakage module of the leakage circuit breaker and connected in the circuit breaker. To pass through the zero-sequence transformer, the live wire in the circuit breaker needs to be wound from the outside of the leakage circuit breaker to the leakage module, and pass through the zero-sequence transformer in the leakage module. The wiring inside the leakage module is also relatively complicated. In order to protect the external leads, a lead cover needs to be installed outside, which increases the volume of the leakage circuit break...

AI Technical Summary

Problems solved by technology

[0002] The leakage circuit breaker includes a leakage module and a circuit breaker. Both the live wire and the neutral wire of the leakage circuit breaker must pass through the zero-sequence transformer, and the zero-sequence transformer is usually set in the leakage module of the leakage circuit breaker and connected in the circuit breaker. To pass through the zero-sequence transformer, the live wire in the circuit breaker needs to be wound from the outside of the leakage circuit breaker to the leakage module, and pass through the zero-sequence transformer in the leakage module. The wiring inside the leakage module is also relatively complicated. In order to protect the external leads, a lead cover needs to be installed outside, which increases the volume of the leakage circuit breaker

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