PKZM0-6.3 Eaton Motor Protective Circuit Breaker

The PKZM0-6.3 is a manual motor protector from Moeller, designed for motor branch-circuit protection in three-phase systems. It is rated for motors up to 1.5 HP at 230V and 3 HP at 460V. The device provides a 6.3A rating in a 3P configuration, adjustable thermal overload protection from 4 to 6.3A, and a magnetic trip response at 88A. It is UL listed and CSA certified for group installations under NEC 430-53 and CEC Rule 28-206. Its short-circuit current rating is 50kA at 600V AC, while the maximum permitted branch-circuit fuse or breaker rating is 600A. By combining these protective functions in one manual unit, it can eliminate separate motor branch-circuit protection and streamline panel layouts.