The PKZ2/ZM-25/S is a combination of the
PKZ2/ZM-25/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-25/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. |
