Arc extinguishing cover for small circuit breaker35

The arc-extinguishing cover for miniature circuit breakers offers excellent heat resistance and impact resistance, maintaining stable arc-extinguishing performance even under high-frequency breaking conditions. It is suitable for various low-voltage distribution scenarios.

Product Detail

Product Description

Specifically designed for high-frequency breaking and complex operating conditions in low-voltage distribution systems, this arc-extinguishing cover serves as a critical core component ensuring the safe and stable operation of circuit breakers. Optimized for high reliability and extended service life through structural design, material selection, and manufacturing processes, the product effectively suppresses arcs and reduces arc energy during circuit breaker operation. This significantly enhances overall breaking performance and system safety levels.
The main body of the arc extinguishing cover utilizes high-performance heat-resistant insulating materials, offering outstanding high-temperature resistance and excellent thermal stability. Under high-energy release conditions such as short circuits or frequent interruptions, the material resists deformation and carbonization, maintaining stable physical and electrical properties over extended periods to ensure the integrity and effectiveness of the arc-extinguishing structure. Additionally, the design fully accounts for mechanical shock and vibration environments encountered in practical applications. The overall structure exhibits robust impact resistance, effectively withstanding mechanical stresses generated during interruption and reducing the risk of performance degradation due to structural damage.
Regarding arc-quenching performance, this arc-extinguishing cover employs a rational internal channel design and arc-quenching plate arrangement to guide rapid arc elongation, segmentation, and cooling. This enables the arc to extinguish within an extremely short timeframe, maintaining stable and reliable arc-quenching effects even under high-frequency breaking or repeated operation conditions. This characteristic helps reduce contact erosion, extends the service life of circuit breakers, and enhances operational consistency of equipment under severe conditions.
This product is suitable for various low-voltage distribution applications, including industrial distribution panels, building power distribution systems, complete switchgear assemblies, and terminal power protection devices. It can be widely used with various types of miniature circuit breakers. Its stable performance not only enhances the overall product quality but also meets the market's increasing demands for safety, reliability, and long-term operational capability.
With outstanding heat resistance, impact resistance, and stable arc-extinguishing performance, this miniature circuit breaker arc-extinguishing cover provides reliable safety assurance for low-voltage power distribution systems, making it an ideal solution for critical component selection in circuit breakers.

Composition

13 arc-extinguishing grids + 2 arc-extinguishing partitions. The raw material for the arc-extinguishing grids is DT4, and the electroplating layer is GB/T 979BFe/Cul Ni3d; the raw materials for the arc-extinguishing partitions are insulating paper Nomex 410 0.5 BZ 2007.042 and Class C cardboard 0.8 Red QB/T 2199.