The PKZM0-0.4/SP is a 3 phase thermal magnetic motor protective device incorporating adjustable bimetal trips for motor overload protection and magnetic trips for branch circuit overcurrent protection. It can be used as a stand-alone combination controller or in group applications to fulfill important branch circuit functions per the NEC and CEC:

• Self-protected combination controller
The PKZM0-0.4/SP is a UL listed, CSA certified Type E manual self-protected combination controller. Per the intent of the CEC and Article 430 of the NEC, self-protected combination controllers fulfill the functions of short-circuit protection, disconnect, controller and overload protection in a single unit when used within their ratings. This eliminates the need to provide fuses or circuit breakers for short-circuit protection and avoids the restrictions stipulated by the CEC/NEC for motor controllers used in group installations. They can also be combined with regular magnetic contactors to provide the performance capabilities of conventional combination controllers with remote operation. The PKZM0-0.4/SP  is suitable as a Type E starter for grounded Wye power systems when the system voltage exceeds 240V.

• Group installation ratings
For non-Wye power systems exceeding 240V, thePKZM0-0.4/SP devices are also listed and marked “Suitable for group installations”, per NEC 430.53 and CEC part 1, rule 28-206. This eliminates the need for individual motor branch circuit protective devices for each motor and reduces the cost and space requirements of industrial control panels and assemblies