Miniature circuit breaker with double-hook linkage protection

Abstract

The invention discloses a miniature circuit breaker with double-hook linkage protection. The structure of the device comprises two-end protectors, a control handle, a connecting buckle, a fastening bolt, a control casing, and a fixing back end. The two-end protectors are fixed at the two sides of the control casing in an embedded mode and fixed to the axis of the control handle. The connecting buckle is arranged at the top of the groove of the control casing through welding, and the fixed back end is embedded in a clamping seat at the left side of the control casing. In conclusion, after improvement, the two-end protectors are used for immediately cutting off connection between n internal main line and a control end after a disconnecting reaction occurs, the situation that tripping cannotbe achieved due to large current and aging of internal contacts is reduced, the inner cavity linkage electric claw is separated for rapid response, and the situation of secondary loss is avoided.

Description

technical field [0001] The invention relates to a miniature circuit breaker, in particular to a miniature circuit breaker with double-hook linkage protection. Background technique [0002] Miniature circuit breakers are widely used in household electricity and the total power control of various electronic control units. Once the equipment is overloaded or short-circuited, the internal detection element will trip the buckle and then disconnect the internal contacts, but Because the circuit breaker is not replaced in time after aging, it may cause certain problems: [0003] The circuit breaker is equipped with an arc extinguishing chamber for arc extinguishing to eliminate internal hidden dangers. As the contact between the aging contacts becomes smaller and the current increases, it is easy to cause deformation of the internal plastic, resulting in partial recovery of the handle and still contact inside, resulting in a circuit breaker Risk of burning. Contents of the inven...

AI Technical Summary

Problems solved by technology

[0002] Miniature circuit breakers are widely used in household electricity and the total power control of various electronic control units. Once the equipment is overloaded or short-circuited, the internal detection element will trip the buckle and then disconnect the internal contacts, but Because the circuit breaker is not replaced in time after aging, it may cause certain problems:

[0003] The circuit breaker is equipped with an arc extinguishing chamber for arc extinguishing to eliminate internal hidden dangers. As the contact between aging contacts becomes smaller and the current increases, it is easy to cause deformation of the internal plastic, resulting in partial recovery of the handle and still contact within the circuit breaker. danger of burning

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