Eaton Cutler-Hammer WMZS3D05 Circuit Breaker Switch

The Eaton Cutler-Hammer WMZS3D05 is a 5A, 5kA Type D TP UL1077 circuit breaker switch. This UL1077-listed device serves as a supplementary protector in electrical circuits, interrupting fault currents up to 5,000 A and tripping at 5 A to safeguard wiring and connected equipment. It is designed for panel-mount installations in low-voltage systems where a compact protective device with a defined trip characteristic is required, and it provides both protection and a means to manually isolate a circuit when needed. As part of the Cutler-Hammer line, the WMZS3D05 reflects Eaton’s approach to reliable protection for circuits demanding UL1077 approval and a Type D response. Common applications include control panels, instrument enclosures, and small distribution boards in industrial and commercial settings.