Moeller PKZM0, Hardware And Engineering

Page: 31 / 75

Unit description
27
04/06 AWB1210-1458D/GB
Figure 4: Wiring of the motor-protective circuit-breaker for the
protection of AC or DC motors (bimetallic release
switched in series)
( a Section “Auslösekennlinien/Tripping characteristics
PKZM0” on Page 39).
Reset
After tripping, the bimetallic releases must first cool down
before the motor-protective circuit-breaker can be reset.
Test function
Proper functioning of the circuit-breaker can be verified by
means of the testing feature
b
(
a
Fig. 1, Page 24).
The active PKZM0 motor circuit-breaker is tripped by
actuating the test release with the help of a screwdriver. This
allows the user to verify the proper functioning of the motor
circuit-breaker in the commissioning phase.
h
The PKZM0 motor-protective circuit-breakers can only be
switched on locally.