Arc extinguishing cover of molded case circuit breaker15

Product Description

As a core component for molded case circuit breakers, this arc-extinguishing cover leverages its scientifically rigorous structural design and outstanding arc suppression performance to become a key element enhancing equipment breaking reliability in power distribution systems. It is widely compatible with various specifications of molded case circuit breakers, meeting power distribution demands across industrial, commercial, and residential applications.
The product's core advantages lie in its rational structural design and precise grid plate arrangement. The internal arc-extinguishing grid plates adopt a densely packed layout, with inter-plate spacing precisely calculated and repeatedly calibrated. This ensures efficient arc capture while maximizing the grid plates' splitting and stretching effects. When a fault current arc is generated during circuit breaker tripping, the arc is rapidly drawn into the arc-extinguishing chamber. Under the influence of the densely arranged grids, it is swiftly elongated into multiple short arcs, significantly increasing the arc's heat dissipation surface area. Simultaneously, the magnetic attraction and insulating barrier properties of the grid elements effectively reduce arc energy density, accelerating arc cooling and extinction while preventing arc reignition or arc flash risks.
Compared to traditional arc-extinguishing components, this product's structural design fully balances adaptability and practicality. Its standardized dimensions and flexible installation methods ensure seamless compatibility with various mainstream molded case circuit breakers on the market. Direct assembly without additional equipment modifications significantly reduces procurement and operational costs for users. Whether addressing overloads and short-circuit faults in distribution lines or meeting high-frequency breaking demands, this arc-extinguishing cover delivers stable performance, effectively enhancing the breaking capacity and service life of molded case circuit breakers.
From raw material selection to final product shipment, every production stage undergoes rigorous quality inspection, ensuring the product's insulation performance, high-temperature resistance, and mechanical strength meet industry-leading standards. In practical applications, this product effectively safeguards distribution equipment and personnel safety, minimizes equipment damage and power outages caused by arc faults, and builds a robust safety barrier for the stable operation of various power systems.

Composition

12 arc-extinguishing grids + 2 arc-isolating plates. The arc-extinguishing grids are made of 2.0mm cold-rolled steel plate Q195, and the arc-isolating plates are made of epoxy laminated glass cloth 3240.

Parameters