Eaton PKZM0/XTPR BC1 Series - Device Overview; Device Description and Operation

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