Overload Relays; Overview Of The Devices; Description Of Device; Overload Protection With Current Transformer-Operated Overload Relay - Eaton XTOBP24BC1 Handbuch

1.2 Overview of the devices

1.3 Description of device

1.3.1 Overload protection with current transformer-operated overload relay

1 ZB12-.../XTOB...BC1 and ZB32-.../XTOB...CC1 overload relays
Figure 1: ZB12-.../XTOB...BC1 overload relays
Figure 2: ZB32-.../XTOB...CC1 overload relays
The ZB12-.../XTOB...BC1 and ZB32-.../XTOB...CC1 overload relays are 3
pole electromechanical overload relays and are equipped with bimetallic
releases. They are suitable both for AC and for DC operation.
The ZB12-.../XTOB...BC1 and ZB32-.../XTOB...CC1 overload relays can be
mounted directly onto DILM.../XTCE... contactor relays.
Table 1: Direct mounting

Overload relays

ZB12-... XTOB...BC1
ZB32-... XTOB...CC1
The ZB32-.../XTOB...CC1 relay can also be operated individually in
combination with a separate mounting.
Table 2: Separate mounting
Overload relays
ZB32-... XTOB...CC1
In the event of an overload trip, auxiliary contacts 95-96 and 97-98 switch and
interrupt the control circuit of the relevant contactor. In this way, they
indirectly disconnect the power flow of the monitored motor.
ZB12-..., ZB32-... 11/16 MN03407004Z-DE/EN www.eaton.com
Contactor
DILM7 XTCE007B
DILM9 XTCE009B
DILM12 XTCE012B
DILM15 XTCE015B
DILM17 XTCE018C
DILM25 XTCE025C
DILM32 XTCE032C
DILM38 XTCE038C
Separate mounting
ZB32-XEZ XTOBXDINC
1.2 Overview of the devices
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