Residual current action circuit breaker

Abstract

The invention is applicable to the field of electrical devices and provides a residual current action circuit breaker which comprises a circuit breaker casing, a circuit breaker operating mechanism comprising a moving contact and a static contact, a leakage protection module comprising a leakage tripping mechanism including a tripping lever, a torsion spring, a leakage indication button and a return spring, and a leakage tripping system comprising a zero-sequence current transformer, a control circuit board and a leakage releaser. When the zero-sequence current transformer detects a leakage fault, the leakage releaser drives the tripping lever to rotate, drives the moving contact to be separated from the static contact, and drives the leakage indication button to protrude from the surfaceof the circuit breaker casing. According to the residual current action circuit breaker, in the case of a leakage fault, the tripping lever can drive the leakage indication button to protrude from thesurface of the circuit breaker casing, a user is reminded of the trip of a circuit breaker due to leakage, at the same time, the tripping lever drives the moving contact to be separated from the static contact, and the safety of electricity use of the user is ensured.

Description

technical field [0001] The invention belongs to the technical field of electrical devices, in particular to a residual current operated circuit breaker. Background technique [0002] As an important switching device in low-voltage electrical appliances, circuit breakers are widely used in electrical circuits. Circuit breakers have three protection functions: overload, short circuit, and leakage. No matter which of the three situations occurs, the circuit breaker will automatically trip and cut off. power supply to ensure the safety of equipment and personnel. [0003] In the prior art, the circuit breaker will trip and cut off the power supply due to overload, short circuit or electric leakage. Resetting the circuit breaker has certain potential safety hazards and is inconvenient for users to use. Contents of the invention [0004] The present invention provides a residual current operated circuit breaker, aiming to solve the problem that it is inconvenient for users to ...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a residual current operated circuit breaker, which aims to solve the problem that the circuit breaker in the prior art is inconvenient for users to know whether the circuit breaker has tripped due to electric leakage and is inconvenient for users to use

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