Circuit Breaker Electromagnet Mounting Bracket

An irregularly shaped metal structure featuring lateral bending slots and a central positioning hole, serving as the core support component for the electromagnetic trip system of low-voltage circuit breakers. It is used to secure the coil bobbin and guide the movement of the moving iron core push rod. By combining a bottom flat mounting surface with an upper U-shaped clamping structure, this component converts electromagnetic attraction into precise mechanical displacement to drive contact opening and closing. It is commonly found in the operating mechanism area of molded case circuit breakers (MCCB).

The part is formed in one piece using precision progressive die stamping. The key processing focus is controlling springback consistency after multi-stage bending to ensure that the U-slot opening dimensions and the relative positional accuracy of lateral mounting holes meet assembly tolerances. This prevents mechanism jamming or asynchronous operation caused by deformation. The surface is electro-galvanized, providing excellent corrosion resistance. Strict control of coating thickness uniformity is required to ensure electrical insulation distance and mechanical strength under long-term current-carrying conditions.

Supported by an ISO 9001 quality management system, our factory is equipped with precision presses from brands such as Gu’anli and Boxin, as well as video measuring instruments. This enables closed-loop control throughout the entire process, from mold development to mass production. We verify coating corrosion resistance using salt spray testing machines and strictly control key mating dimensions. Our products meet the stringent delivery standards of industry leaders like CHINT and DELIXI. We support customization of operating mechanism brackets for different pole configurations based on customer drawings.