PKZM0/XTPR…BC1 motor-
protective circuit-breakers
28
01/11 MN03402003Z-DE/EN
Device overview
Figure 1:
PKZM0/XTPR…BC1 motor-protective
circuit-breakers
a
Motor current dial
b
Testing element
Description of device
Overload protection with motor-protective
circuit-breakers
The PKZM0/XTPR…BC1 series are 3-phase electromechan-
ical motor-protective circuit-breakers with bimetallic release
for overload monitoring.
The PKZM0/XTPR…BC1 motor-protective circuit-breaker
disconnects all phases from the main circuit when an over-
load occurs. The power flow to the monitored motor is thus
switched off directly.
Figure 2:
Circuit diagram of the PKZM0/XTPR…BC1 motor-
protective circuit-breakers
a
b
I > I > I >
L1 L2
L3
T1
T2 T3
-Q1
Summary of Contents for PKZM0-0,25/XTPRP25BC1
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