Prepaid circuit breaker arc-extinguishing system

Abstract

The invention discloses a prepaid circuit breaker arc-extinguishing system comprising a circuit breaker pedestal and a circuit breaker cover body. The circuit breaker cover body is fixed on the circuit breaker pedestal. The internal part of the circuit breaker pedestal is provided with pedestal segmentation strips, a pedestal front isolation rib, a pedestal rear isolation rib, a pedestal lead wire slot, a pedestal positioning rib, pedestal arc discharge slots and pedestal arc discharge ports. The internal part of the circuit breaker cover body is provided with cover body segmentation strips, a cover body front isolation rib, a cover body rear isolation rib, a cover body lead wire slot, a cover body positioning rib, cover body arc discharge slots and cover body arc discharge ports which are corresponding to the internal components of the circuit breaker pedestal. The beneficial effects are that the segmentation strips are corresponding in a staggered way so that arc can be effectively segmented, inter-arc voltage can be enhanced and arc can be extinguished, and isolation protection design is performed on an electronic control system so that ablation of arc to the electronic control line can be avoided; and a lead wire slot is designed on a shell for protecting a power supply wire so that short circuit caused by arc erosion can be avoided. The isolation and arc-extinguishing effect is great and safety and reliability are high.

Description

technical field [0001] The invention relates to a circuit breaker component, in particular to a prepaid circuit breaker arc extinguishing system. Background technique [0002] A circuit breaker (English name: circuit-breaker, circuitbreaker) refers to a switch that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time device. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The division of high and low voltage boundaries is relatively vague. Generally, those above 3kV are called high-voltage electrical appliances. [0003] Circuit breakers can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, and automatically cut off the circuit when they are severely overloaded, short-circuited, or under-voltage. Its function is equivalent t...

AI Technical Summary

Problems solved by technology

[0005] The arc extinguishing system in the existing circuit breaker has a complex structure, poor sealing, poor isolation and arc extinguishing effect, and is not safe enough

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