Residual-current circuit breaker device

Abstract

The invention relates to the field of low-voltage electric appliances, in particular to a residual-current circuit breaker device which comprises a residual-current circuit breaker, a function extension base arranged on one side of the residual-current circuit breaker and a shunt tripping module matched with the function extension base in an inserted mode. The shunt tripping module comprises a shunt tripper, the function extension base comprises a switch piece in driving fit with the shunt tripper, the electric leakage circuit breaker comprises an electric leakage test circuit, the electric leakage test circuit comprises a test resistor R, and the switch piece and the test resistor R are connected in series between a phase pole circuit and an N pole circuit of the electric leakage circuit breaker. The shunt tripping module receives an external tripping signal to enable the shunt tripper to act, the switch piece is driven to be switched on, and the residual current circuit breaker is switched off; according to the residual-current circuit breaker device, the shunt tripping module of the residual-current circuit breaker device realizes a shunt tripping working mode of the residual-current circuit breaker.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, in particular to a leakage circuit breaker device. Background technique [0002] Low-voltage circuit breakers, also known as automatic air switches or automatic air circuit breakers, can be used to distribute electrical energy, protect circuits and power supply equipment in the event of overload or short-circuit faults, and can also be used for infrequent switching of circuits and infrequent starting of motors. As an important product of low-voltage circuit breakers, leakage circuit breakers generally have functions such as short-circuit protection, overload protection, leakage protection, overvoltage and undervoltage protection, and leakage self-test. If users also need surge protection, shunt tripping, and fault alarms, Fault display, auxiliary contact and other functions are traditionally implemented by re-connecting an accessory with this function in the distribution box. The ...

AI Technical Summary

Problems solved by technology

As an important product of low-voltage circuit breakers, leakage circuit breakers generally have functions such as short-circuit protection, overload protection, leakage protection, overvoltage and undervoltage protection, and leakage self-test. If users also need surge protection, shunt tripping, and fault alarms, Fault display, auxiliary contact and other functions, the traditional implementation method is to reconnect an accessory with this function in the distribution box, the wiring is more complicated, and it takes up a lot of space

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