Why the PKZM0-25?

The Eaton Moeller PKZM0-25 is a three-pole, phase-failure-sensitive motor-protective circuit breaker rated at 25 A. It protects three-phase motors up to 12.5 kW at 400 V AC-3 and consolidates short-circuit, overload, and phase-loss protection in a 45 mm-wide DIN-rail device.

• Rated uninterrupted current: 25 A
• Overload setting range: 20 - 25 A
• Undelayed short-circuit release: 388 A
• Operating voltage: 690 V
• Power loss: 7.04 W
• Phase-failure sensitive: Yes
• SmartWire-DT ready: Yes

2026 ROI Perspective

Replacing fuse + contactor + thermal relay stacks with a single PKZM0-25 reduces panel footprint, wiring time, and spares inventory. It lowers unplanned downtime through clear trip indication, test function, and quick turn-button reset.

Maintenance Best Practices

Set the thermal dial to motor full-load current, keep panel ambient below 40 C, torque screw terminals according to Eaton guidelines, and exercise the trip-test function during scheduled downtime.