Arc extinguishing cover for small circuit breaker47

Product Description

Specifically engineered for standard miniature circuit breaker configurations, this cover seamlessly integrates with common internal layouts, serving as a critical component for improving breaking safety and operational stability. The product features an internally arranged arc-extinguishing grid design that substantially boosts arc-quenching efficiency during circuit breaker operation, providing robust assurance for reliable performance.
At the instant of circuit breaker disconnection, high-temperature, high-energy arcs are generated as contacts separate. This arc extinguishing cover rapidly divides the arc into multiple segments through its strategically arranged extinguishing grids. This elongates and disperses the arc across the grids, accelerating its cooling and extinction. The orderly grid structure not only shortens the arc duration but also effectively reduces thermal shock caused by concentrated arc energy, minimizing erosion and wear on contacts and surrounding components.
The product's structural design fully integrates with the internal space characteristics of standard miniature circuit breakers. Once installed, the arc-extinguishing cover achieves precise positioning and reliable fixation, maintaining stability during the breaking process. This ensures consistent relative positioning between the arc-extinguishing grids and the arc path, guaranteeing sustained and stable arc-extinguishing performance under varying operating conditions. Its excellent structural adaptability also enhances overall assembly efficiency, meeting the demands of mass production and standardized applications.
Regarding materials and manufacturing processes, the arc-extinguishing cover is fabricated from materials exhibiting excellent heat resistance, arc resistance, and electrical insulation properties. It withstands the high temperatures, electrodynamic forces, and mechanical shocks generated during instantaneous breaking. Under frequent operation and long-term service conditions, the product resists deformation or aging, ensuring the internal arc-extinguishing grid structure maintains long-term stability and consistently delivers high-efficiency arc extinction.
This miniature circuit breaker arc extinguishing cover is suitable for diverse applications, including industrial power distribution systems, building power distribution installations, complete switchgear assemblies, and end-use electrical protection systems. By significantly enhancing arc extinction efficiency during the breaking process, the product plays a positive role in elevating circuit breaker safety ratings, extending service life, and reducing maintenance requirements.
Overall, this product delivers a stable and reliable arc-extinguishing solution for circuit breakers through its excellent compatibility with standard miniature circuit breaker structures and its orderly, efficient arc-extinguishing grid design. It serves as an indispensable component in low-voltage power distribution systems.

Composition

1 insulating partition + 13 arc-extinguishing plates. The insulating partition is made of 0.8mm green steel paperboard, and the arc-extinguishing plates are made of 0.8mm cold-rolled steel plate DC01.

Parameters