Fault arc circuit-breaker

Abstract

The invention relates to the field of circuit protection devices, and provides a fault arc circuit-breaker. The fault arc circuit-breaker includes a shell; A mounting seat is fixedly mounted on a rearsurface of the shell; circuit breaker input ports are disposed at the upper part of the mounting seat; circuit breaker output ports are disposed at the lower part of the mounting seat; alarm indicating lamps and a wireless indicating lamp are respectively disposed at the upper part of the shell; a display screen is disposed below the alarm indicating lamps; a test button is disposed on one side of the display screen; release devices are disposed below the display screen; one side of the release devices is provided with a USB interface; and a control circuit board is disposed inside the shell.The fault arc circuit-breaker overcomes the deficiencies of the prior art, is reasonable in design, can find an arc in time and cuts off a circuit, also can monitor circuit conditions in real time, prompts an occurrence position of the arc, and brings convenience for later maintenance of the circuit.

Description

technical field [0001] The invention relates to the field of circuit protection devices, in particular to a fault arc circuit breaker. Background technique [0002] Arcing is a natural phenomenon in which an insulator changes from non-conductive to conductive and emits heat after being broken down by voltage. It is commonly known as "arcing". Hidden dangers generally occur in poor insulation or poor contact of the line, and may also occur in loose wire connections, as well as in aging or damaged lines and the connection of electrical lines. In electrical short-circuit fires, ground fault arc short-circuits cause fires The danger is the greatest, because the arc has a large impedance and voltage drop, which limits the fault current, so that the overcurrent protection device cannot act or act in time to cut off the power supply. [0003] At this time, the arc fault circuit breaker is required to detect the arc in time and cut off the circuit to prevent fire and effectively re...

AI Technical Summary

Problems solved by technology

[0002] Arcing is a natural phenomenon in which an insulator changes from non-conductive to conductive and emits heat after being broken down by voltage. It is commonly known as "arcing". Hidden dangers generally occur in poor insulation or poor contact of the line, and may also occur in loose wire connections, as well as in aging or damaged lines and the connection of electrical lines. In electrical short-circuit fires, ground fault arc short-circuits cause fires The danger is the greatest, because the arc has a large impedance and voltage drop, which limits the fault current, so that the overcurrent protection device cannot act or cannot act in time to cut off the power supply

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