Arc extinguishing cover of molded case circuit breaker29

Product Description

The core function of this arc-extinguishing hood, specifically designed for molded case circuit breakers, lies in efficiently reducing arc energy during breaking. It significantly mitigates the thermal effects of high-temperature arcs on adjacent components, thereby improving the operational reliability of the entire power distribution system at critical junctures. It is widely applicable to low-voltage distribution scenarios across diverse fields including industrial production, commercial buildings, data centers, and new energy power stations.
When a circuit breaker interrupts fault currents, the generation and persistence of arcs release substantial energy. The resulting high temperatures not only erode the breaker's own contacts but also cause thermal damage to surrounding components like coils, wiring, and insulators. Over time, this can lead to component performance degradation, insulation aging, and even system failures. This product optimizes its internal arc-quenching structure design by combining multi-level grid partitioning with efficient cooling channels. It rapidly captures and directs arcs into the arc-quenching chamber upon arc generation. Through dual mechanisms of physical separation and energy dissipation, it significantly reduces arc energy density and duration, fundamentally mitigating the thermal radiation and heat conduction effects of arcs.
Authoritative testing confirms that installing this arc-quenching cover reduces the maximum ambient temperature around components during circuit breaker operation by over 40%. This effectively prevents premature component failure caused by prolonged thermal exposure. Both precision electronic control elements and critical distribution line insulation layers receive robust protection during switching operations, minimizing thermal damage-induced outages and significantly extending the stable operational lifespan of distribution systems.
Crafted from premium high-temperature-resistant insulating materials and utilizing mature precision manufacturing techniques, this product not only exhibits outstanding arc erosion resistance but also maintains structural integrity and performance stability while absorbing arc energy. It remains resistant to carbonization and deformation during prolonged use. Its standardized structural design ensures seamless compatibility with various mainstream molded-case circuit breakers on the market, enabling effortless installation without additional modifications. Whether for new equipment integration or retrofitting existing systems, it can be rapidly deployed.
Rigorous end-to-end quality inspections cover critical metrics including arc energy suppression effectiveness, temperature resistance, and dimensional accuracy, ensuring each unit reliably delivers core functionality. Selecting this arc suppression cover enables precise arc energy control and thermal impact protection, building a more reliable safety barrier for power distribution systems. This empowers users to achieve low-fault, high-efficiency power distribution operation and maintenance objectives.

Composition

2 sheets + 26 arc-extinguishing grids + 2 plastic sleeves. The sheet material is 0.5 epoxy board, the arc-extinguishing grid material is 0.8 Q235, and the plastic sleeve material is PA66-GF10 (3021G10).

Parameters