Arc extinguishing cover for small circuit breaker63

Product Description

This miniature circuit breaker incorporates an arc-extinguishing cover assembly with an efficient arc-quenching structure, specifically designed to enhance safety and reliability during the breaking process. When the circuit breaker executes a breaking operation, the arc-extinguishing cover rapidly guides and controls the generated arc. It effectively elongates, segments, and extinguishes the arc within a controlled space, significantly shortening the arc duration and reducing the impact of arc energy on internal structures. This provides stable and reliable safety protection for the circuit breaker.
Through scientifically optimized arc-quenching channel design and internal structure refinement, the arc-quenching hood efficiently disperses arc heat, mitigating thermal shock caused by heat concentration and reducing high-temperature damage to contacts, insulating components, and other critical parts. This highly effective arc-quenching method helps suppress contact erosion, material aging, and performance degradation. Consequently, the circuit breaker maintains stable electrical and mechanical performance even under repeated breaking cycles and complex operating conditions, extending its overall service life.
Demonstrating superior structural strength, thermal resistance, and electrical stability, this arc-extinguishing cover adapts to diverse operating conditions including frequent switching, overloads, and short-circuit interruptions, ensuring long-term reliability. Widely applicable in industrial control systems, building low-voltage distribution, and equipment power protection scenarios, it guarantees interrupting performance while prioritizing safety and durability.

Composition

8 arc-extinguishing grid plates + 1 arc-extinguishing cover.

The arc-extinguishing grid plates are made of 0.8 cold-rolled steel plate 10, and the arc-extinguishing cover is made of reinforced flame-retardant nylon PA66 MF GF30 grey.

Parameters