PKZ2/ZMR-25/S Eaton Motor Protective Circuit Breaker

The PKZ2/ZMR-25/S is a 3-pole, 25 A motor protective circuit breaker configured as a manual motor starter. It integrates a PKZ2 basic module, ZMR-25-PKZ2 overload relay with adjustable thermal trip range of 16–25 A, S-PKZ2 high-capacity contactor, and C-PKZ2 DIN rail mounting adapter. Magnetic trip occurs between 200 A and 350 A. It supports motors rated up to 7.5 HP at 230 V and 20 HP at 460 V. Certified to UL and CSA standards, it complies with NEC 430-53(c) and CEC Rule 28-206 for group installation, permitting multiple PKZ2 motor protectors to share one branch circuit protective device. The unit is self-protected with integrated overload trip and short-circuit protection.