Mini-type electromagnetic trip residual current breaker

Abstract

The present invention discloses a mini-type electromagnetic trip residual current breaker. The mini-type electromagnetic trip residual current breaker comprises a mini-type breaker main body and an electromagnetic trip protector. The electromagnetic trip protector is installed at the right side of the mini-type breaker main body, the mini-type breaker main body comprises a breaker housing, a breaker trip mechanism arranged in the mini-type breaker main body and a handle operation mechanism arranged on the breaker, and the electromagnetic trip protector comprises a housing, an assistant trip mechanism arranged in the housing, a tripper module connected with the assistant trip mechanism, a mutual inductor connected with the tripper module and a trip control circuit board thereof. The mini-type electromagnetic trip residual current breaker can perform automatic reset after action of a leakage trip mechanism, does not need a leakage reset handle or a reset button, and employs a square transmission rod to drive a built-in push and swing rod to push a swing arm to achieve locking of the leakage trip mechanism so as to turn on a leakage function.

Description

technical field [0001] The invention belongs to the technical field of low-voltage electrical appliances, and in particular relates to a small electromagnetic trip type leakage circuit breaker. Background technique [0002] Leakage circuit breakers are mainly divided into two types, one is the leakage circuit breaker with electronic tripping protection, and the other is the leakage circuit breaker with electromagnetic tripping protection. The leakage circuit breakers widely produced in China are generally based on electronic tripping protection. They are integrated control circuits composed of electronic components and require sufficient auxiliary power. Voltage fluctuations or absences will affect their protection performance. Or it cannot be protected; and the electronic components have poor anti-electromagnetic interference performance, and high current shocks are prone to malfunction, and the electronic components are easy to age and have a short service life. The leaka...

AI Technical Summary

Problems solved by technology

At present, most of the existing small electromagnetic leakage circuit breakers are only produced by foreign companies (such as Schneider) and several domestic companies. The structure is relatively complicated and the assembly is troublesome; It can only be reset by moving the leakage reset handle or pressing the reset button. At the same time, the processing and manufacturing process requirements are relatively high, and the manufacturing cost is also high, so it is not easy to be widely used.

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