Safety electric leakage circuit breaker and application method thereof

Abstract

The invention relates to a safety electrical leakage circuit breaker. The safety electrical leakage circuit breaker comprises a circuit breaker shell and a handle and also comprises a test button, wiring terminals and protection covers, wherein the circuit breaker shell comprises an operation shell, a rectangular concave shell, a spring cavity and a wiring cavity, the test button comprises a button body and a locking device, the locking device comprises a sliding way, a front sliding hole, a locking strip, a shift strip and a limitation strip, the wiring terminals are arranged in pairs, at least two pairs of wiring terminals are arranged, and each wiring terminal comprises a fixed terminal, a U-shaped sliding terminal, a driving bolt and a misplug-preventing plate, a pair of protection covers are arranged, and each protection cover comprises a front plate, a basic-layer plate, a high-layer plate, a wire through hole and an arc front cover. The invention also discloses an application method for protecting the safety electrical leakage circuit breaker. By the safety electrical leakage circuit breaker, misplug during plug of a wire can be prevented, the driving bolts of the wiring terminals and a metal core of the wire can be coated to prevent electrical shock, a test electrical leakage loop can be locked in a conduction state, and the handle is prevented from being operated by mistake.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a safety leakage circuit breaker and a method for using the same. Background technique [0002] Leakage circuit breaker is a switch that can automatically operate when the leakage current in the circuit exceeds a predetermined value, mainly to prevent personal electric shock. Some circuit breakers are also integrated with residual current protection. In the event of leakage, the tripping device operates to cut off the power of the circuit breaker. [0003] When the circuit breaker in the prior art connects the wires, the insulation sheath of the wires is peeled off, and then the conductive metal core is inserted into the terminal for fixing. But it has the following problems: one, the fixing bolt of the terminal block is also kept in communication with the outside world through the jack for inserting the screwdriver, causing electric shock hazard; Even if the metal core i...

AI Technical Summary

Problems solved by technology

But it has the following problems: one, the fixing bolt of the terminal block is also kept in communication with the outside world through the jack for inserting the screwdriver, causing electric shock hazard; Even if the metal core is inserted into the bottom of the terminal, the metal core is still partially exposed, causing electric shock hazards; 3. When the maintenance personnel pull down the handle to disconnect the circuit to repair the circuit, uninformed personnel may misuse the handle on the push, cause an accident

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