Description Of Device; Overload Protection With Motor-Protective Circuit-Breakers; Setting Range Of The Motor-Protective Circuit-Breaker - Eaton PKE series Handbuch

10/15 MN03402004Z-DE/EN

Description of device

Overload protection with motor-protective
circuit-breakers
The PKE device is a three-pole motor-protective circuit-
breaker with electronic wide-range overload protection
designed to monitor electric motors for overload.
In the event of an overload trip, the PKE will disconnect all
poles from the main circuit using the PKE-XTU(W)(A)-... trip
block. This stops the power flow to the monitored motor
directly.
L1 L2 L3
-Q1
I > I > I >
T1 T2 T3
Figure 13: Circuit diagram for PKE motor-protective circuit-
breaker with trip block PKE-XTU(W)(A)-...

Setting range of the motor-protective circuit-breaker

PKE motor-protective circuit-breakers need to be matched to
the corresponding rated motor current by using the setting
dial (a fig. 14).
...A
Figure 14: Setting dial for rated motor current
Three basic devices (PKE12 for up to 12 A, PKE32 for up to
32 A, and PKE65 for up to 65 A) and six different electronic
trip blocks make it possible to monitor motors with a rated
motor current range of 0.3 to 65 A (a Table 9).
Description of device
CLASS
39