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The PKZM0-0.4/SP is a 3 phase thermal lagnetic 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 bracnh 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.
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