PKZ2/ZMR-1/S Eaton Motor Protective Circuit Breaker

The PKZ2/ZMR-1/S is a 3-pole, 1 A motor protective circuit breaker configured as a manual motor starter. It integrates a PKZ2 basic module, ZMR-1-PKZ2 thermal overload relay (0.6–1 A range), S-PKZ2 high-capacity magnetic contactor, and C-PKZ2 DIN rail mounting adapter. Magnetic trip occurs between 8 A and 14 A. It supports motors up to 1/2 HP at 460 V. The device is UL listed and CSA certified. It complies with NEC 430-53(c) and CEC Rule 28-206 for group motor installations, permitting multiple motors to share a single branch circuit protective device without individual motor branch overcurrent protection. This configuration reduces control panel space requirements and associated material costs.