The M4M Series offers 600A motor circuit protectors with interrupting voltage ratings from 240 to 600 Vac. It meets global standards including UL 489, CSA C22.2 No. 5, and IEC 60947-2. The MCP integrates short-circuit protection, overload and phase loss protection via thermal relay, and motor switching in one device. Selection depends on motor power, starting method, motor type (cage or wound rotor), and fault current at the installation point.