Air-operated Circuit Breaker （ACB） Automatic production line

This standardized production line is meticulously engineered for the assembly and testing of low-voltage Air Circuit Breakers. The process utilizes robust mechanized fixtures to ensure the accurate alignment of the large current carrying parts, including the main contact system and arc chute. Crucial assembly stages involve the precise installation of the spring energy storage mechanism and the integration of the electronic trip unit (ETU). Automated testing stations perform comprehensive checks, including mechanical characteristic verification, ETU functional testing for overload and short-circuit protection curves, and insulation resistance checks. A central control system ensures strict adherence to required IEC 60947-2 standards and maintains detailed traceability records for critical components, guaranteeing the ACB's reliable operation in heavy-duty commercial and industrial applications.