Short-Circuit Protection Of The Overload Relay - Eaton ZE serie Handbuch

2.3 Short-circuit protection of the overload relay

The short-circuit protection of the ZE/XTOM overload relay can be partially
implemented either with or without a fuse. The type of coordination is
related to the type of DILEEM or DILEM/XTMC contactor that is used
(￫ table 2, page 28).
CAUTION

According to EN 60947-4-1 only type of coordination "2" may
be used for the protection of EEx e motors.
Table 3: Overview of short-circuit protection with ZE/XTOM relays
Type
ZE-0.16 XTOMP16AC1
ZE-0.24 XTOMP24AC1
ZE-0.4 XTOMP40AC1
ZE-0.6 XTOMP60AC1
ZE-1.0 XTOM001AC1
ZE-1.6 XTOM1P6AC1
ZE-2.4 XTOM2P4AC1
ZE-4 XTOM004AC1
ZE-6 XTOM006AC1
ZE-9 XTOM009AC1
ZE-12 XTOM012AC1
1) According to IEC/EN 60947
ZE/XTOM 11/17 MN03407003Z-DE/EN www.eaton.com
2.3 Short-circuit protection of the overload relay
Short-circuit With fusing
current rating
Type of coordination
I
q
1)
„1"
kA A gG/gL
100 20
100 20
100 20
100 20
100 20
100 20
100 20
100 35
100 35
100 35
100 35
2 Engineering
1)
„2"
A gG/gL
0.5
1
2
2
4
6
6
20
20
20
20
33