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1 ZB12-…/XTOB…BC1 and ZB32-…/XTOB…CC1 overload relays
1.2 Overview of the devices
ZB12-…, ZB32-…
11/16 MN03407004Z-DE/EN
www.eaton.com
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1.2 Overview of the devices
Figure 1: ZB12-…/XTOB…BC1 overload relays
Figure 2: ZB32-…/XTOB…CC1 overload relays
1.3 Description of device
1.3.1 Overload protection with current transformer-operated overload relay
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
The ZB32-…/XTOB…CC1 relay can also be operated individually in
combination with a separate mounting.
Table 2: Separate mounting
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.
Overload relays
Contactor
ZB12-…
XTOB…BC1
DILM7
DILM9
DILM12
DILM15
XTCE007B
XTCE009B
XTCE012B
XTCE015B
ZB32-…
XTOB…CC1
DILM17
DILM25
DILM32
DILM38
XTCE018C
XTCE025C
XTCE032C
XTCE038C
Overload relays
Separate mounting
ZB32-…
XTOB…CC1
ZB32-XEZ
XTOBXDINC