The PKZ2/ZM-2.4/S
is a
combination of the PKZ2/ZM-2.4/S
. manual motor protector
and the S-PKZ2 high capacity magnetic contactor.
UL listed and CSA certified
as HP rated motor controllers which provide motor
running overload protection. In addition, they are UL
listed and CSA certified for group applications as per
NEC 430-53(c) and CEC part 1, rule 28-206. This
eliminates the need for individual motor branch circuit
over current protective devices for each motor, thus
greatly reducing the cost and space requirements of
industrial control panels and assemblies. This means
that a group of motors, each protected and controlled by
PKZ2/ZM-2.4/S
can be combined under a single branch
circuit short circuit and ground fault protective
device, the maximum rating of which is marked on each
PKZ2 motor protector.
In group installations
involving a number of System PKZ2 motor protectors, the
maximum rating of the group branch circuit over current
protective device is based on the lowest backup over
current rating marked on each motor protector in the
group, combines with applicable NEC/CEC installation
rules.
