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The PKZM1 is a 3 phase thermal magnetic motor protective device incorporating bimetal trips for motor overload protection and magnetic trips to de-energize the motor circuit in case of a short circuit. It is UL Listed and CSA certified as a HIP rated manual motor controller which provides motor running overload protection. In addition, the PKZM1 is UL listed and CSA certified for group applications as per NEC 450-53(c) and CEC part 1, Rule 28-206. This means that a group of motors, each protected and controlled by a PKZM1, can be combined under a single branch circuit short circuit and ground fault protective device the maximum rating of which is marked on each PKZM1 manual motor protector.
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