Circuit breaker

• Main Authors: GU JIANQING, GUAN RUILIANG, DENG YIFEI
• Format: Patent
• Language: Chinese; English
• Published: 04.04.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

A circuit breaker belongs to the technical field of low-voltage apparatuses. Which comprises a moving contact, a static contact, an arc extinguish chamber and a pair of insulating plates, a slit-shaped space is formed between the pair of insulating plates to allow the moving contact to move, and the moving contact and the static contact are separated and closed, and is characterized in that each insulating plate in the pair of insulating plates comprises a first insulating side plate and a second insulating side plate, and a gap is kept between the adjacent edges of the two. The circuit breaker has the advantages that the creepage distance between the fractures is increased, and the fracture withstand voltage level of the circuit breaker is improved; and when the magnetic conductive plates are arranged on the outer sides of the pair of insulating plates, the distance from the magnetic conductive plates to the end tab is reduced, and the difficulty of transferring the arc from the moving contact to the moving