Residual-current circuit breaker

Abstract

A residual-current circuit breaker is provided. An operating mechanism comprises a mounting plate, a handle, an upper connecting rod, a middle connecting rod, a lower connecting rod, a rotating shaft, a U-shaped connecting rod, a lever, a trip, a lock catch, a trip rod, a drive connecting rod, a contact trip, and a first elastic part, wherein the handle, the upper connecting rod, the middle connecting rod, the lower connecting rod, the rotating shaft, the U-shaped connecting rod, the lever, the trip, the lock catch, the trip rod, the drive connecting rod, the contact trip, and the first elastic part are arranged between the mounting plate and a support. The advantage is that according to the above scheme, the trip is driven by a lever to operate in trip or switching off, the trip rod toggles the drive connecting rod, the contact trip operates to drive the rotating shaft to rotate, thereby achieving quickly tripping, being not affected by the handle, and improving product performance.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to a leakage circuit breaker. Background technique [0002] Leakage circuit breaker is a circuit breaker with leakage protection function, a switch that can automatically operate when the leakage current in the circuit exceeds a predetermined value. [0003] The operating mechanism of the leakage circuit breaker usually includes a handle, an upper link, a middle link, a lower link, a lever, a rotating shaft, a lock, a jumper and a number of reset elastic parts. Through the rotation of the handle, the linkage of the upper link and the lower link drives the rotation of the rotating shaft to realize the opening and closing of the moving contact, resulting in slow tripping speed, and the opening and closing are affected by the handle, which affects the product performance. Contents of the invention [0004] In order to overcome the disadvantages of the background technology, the present invention...

AI Technical Summary

Problems solved by technology

[0003] The operating mechanism of the leakage circuit breaker usually includes a handle, an upper link, a middle link, a lower link, a lever, a rotating shaft, a lock, a jumper and a number of reset elastic parts. Through the rotation of the handle, the linkage of the upper link and the lower link drives the rotation of the rotating shaft to realize the opening and closing of the moving contact, resulting in slow tripping speed, and the opening and closing are affected by the handle, which affects the product performance

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