PKZ2/ZMR-6/S-SP Eaton Motor Protective Circuit Breaker

The PKZ2/ZMR-6/S-SP is a 3-pole, 6 A motor protective circuit breaker configured as a manual motor starter. It combines short-circuit and overload protection in a single device, incorporating the PKZ2/S-SP base module with integrated contactor, ZMR-6-PKZ2 overload relay (adjustable thermal range: 4–6 A), and C-PKZ2 DIN rail mounting adapter. Magnetic trip occurs between 50–80 A. It supports motors up to 1.5 HP at 230 V and 3 HP at 460 V. Certified UL/CSA Type E as a combination motor controller, it operates without backup overcurrent protection under fault conditions. Design features include a plug-in trip module, phase-loss protection, built-in auxiliary contacts, and compatibility with voltage trips and auxiliary signaling accessories.