Low-Voltage Circuit Breaker Housing and Base

Please provide 2D/3D drawings detailing key mating dimensions, wall thickness requirements, and tolerance grades to facilitate the evaluation of mold development plans and injection molding parameters. These components are primarily used in miniature circuit breakers (MCBs) or residual current devices within low-voltage distribution systems, providing overload and short-circuit protection through modular assembly.

The part structure typically includes snap-fit slots for DIN rail mounting, terminal孔 positions, and internal support ribs for arc chutes. As these parts often utilize glass-fiber-reinforced thermosetting materials (such as DMC/BMC) or high-performance engineering plastics, the core processing challenge lies in controlling shrinkage deformation under high filler loads. This ensures consistency in mounting hole positions across multi-cavity molds. Special attention is paid to controlling flatness in thin-walled areas and sealing at mating surfaces to prevent warping or creepage risks after assembly.

With over 20 years of experience in precision mold manufacturing, Jianda Electric offers one-stop services from mold design to final assembly. Equipped with high-tonnage injection molding machines from brands like Haitian and Engel, as well as specialized DMC thermosetting equipment, our factory operates under the IATF16949 quality management system. We utilize Zeiss CMMs for full-process monitoring of critical positioning dimensions and RoHS testers to ensure material compliance, meeting the stringent standards for heat resistance, flame retardancy, and dimensional stability required by major European and American electrical giants.