Arc extinguishing cover for small circuit breaker34

Product Description

As the core arc-extinguishing component of miniature circuit breakers, this arc-extinguishing cover focuses on safety requirements in small-scale distribution scenarios. Its key highlights include a refined structural design and highly efficient arc-extinguishing performance. Specifically developed for various miniature circuit breakers, it is widely compatible with circuit breaker equipment in industrial control, building power distribution, and home appliance control applications, providing critical assurance for circuit disconnection safety.
Featuring a compact structural design, it precisely matches the internal installation space of miniature circuit breakers, maximizing arc-extinguishing functionality within limited dimensions. Optimized housing contours and mounting interfaces enable rapid adaptation without modifying the main circuit breaker structure. This satisfies space constraints for miniaturized equipment while reducing downstream assembly costs and compatibility challenges, offering exceptional adaptability to mainstream miniature circuit breaker specifications.
The internal arc-extinguishing grid plates employ a scientifically designed layout. Precise calculations of plate spacing, quantity, and arrangement angles create highly efficient arc-extinguishing channels. When an arc forms during circuit interruption, the grids rapidly generate electromagnetic attraction to draw the arc into the arc-extinguishing chamber. Simultaneously, the grids' segmenting effect breaks the long arc into multiple short arcs, significantly increasing arc voltage and overcoming the critical conditions for arc sustainment. Simultaneously, the grid plates exhibit excellent thermal conductivity, rapidly dissipating arc heat to achieve ultra-fast arc elongation and extinction. This significantly enhances arc-quenching response speed compared to conventional products, effectively preventing secondary circuit faults caused by arc tracking.
Leveraging its high-efficiency arc-quenching performance, the product substantially reduces contact erosion in circuit breakers. Rapid arc extinction minimizes contact time between high-temperature arcs and contacts, preventing metal melting and vaporization. This effectively maintains contact surface flatness and electrical conductivity, extending contact lifespan. This advantage directly enhances the overall service life of circuit breakers, reducing equipment replacement frequency and operational costs, thereby building a more economical and stable power distribution system for users.
The product utilizes premium insulation materials resistant to high temperatures and arc erosion, combined with precision molding techniques, ensuring stable performance under prolonged high-temperature and high-voltage conditions while meeting insulation strength and structural integrity standards. After multiple extreme breaking tests and aging tests, all performance metrics comply with industry-leading standards, enabling reliable operation in complex power distribution environments. With its core advantages of compact structure, efficient arc extinction, and extended service life, this arc-extinguishing cover has become a key upgrade component for mini circuit breakers, enhancing the safety and reliability of power distribution systems.

Composition

14 arc-extinguishing grids + 2 side plates. The raw materials for the arc-extinguishing grids are 1.8 SAE 1010 and 1.5 SEA 1010, and the raw material for the side plates is 1.2 epoxy board.

Parameters