Moving contact operating mechanism for residual-current circuit breaker

Abstract

The invention relates to the low-voltage residual-current circuit breaker, especially to a moving contact operating mechanism for a residual-current circuit breaker. According to the technical scheme, the moving contact operating mechanism is characterized in that the operating mechanism comprises a moving contact, a trip buckle, a moving contact bracket, a latch spring, a latch and a tension spring. A long through hole is formed in the moving contact bracket; a pin shaft is arranged in the long through hole; and the two ends of the pin shaft are arranged on a base and a cover of a circuit breaker. The trip buckle is hinged to the upper end of the moving contact bracket. The middle part of the latch sleeves the pin shaft movably by a set through hole; an abutting pin that cooperates with the trip buckle in an abutting mode to limit rotation of the trip buckle is arranged above the latch in an extending mode; and a push pin and a reset pin arranged below the latch. On the basis of the scheme, with the novel operating mechanism, the length or width of the residual-current circuit breaker can be smaller than that of the product in the prior art; and needs of customers can be met well.

Description

technical field [0001] The invention relates to a low-voltage leakage circuit breaker, in particular to an operating mechanism of a moving contact on the leakage circuit breaker. Background technique [0002] Leakage circuit breakers are widely used, mainly used in industrial, commercial, residential and other places, mainly used for short circuit overload protection and leakage protection. Existing product 1P+N products generally use widened product width, that is, the leakage module is assembled on the basis of the existing miniature circuit breaker or the upper side of the miniature circuit breaker or The circuit board, tripping mechanism and leakage current test device are added on the lower side to realize, and the product width is generally relatively large. Or by extending the length of the product, that is, setting the circuit board and the tripping mechanism of the test device on the upper or lower side of the miniature circuit breaker. With the increase of electr...

AI Technical Summary

Problems solved by technology

[0004] The invention overcomes the defect of large volume of the existing leakage circuit breaker, and provides a new type of moving contact operating mechanism of the leakage circuit breaker which can make the length or width of the leakage circuit breaker smaller than that of the prior art products and better meet the needs of customers

Images