Page 751 - Motor protection and control Manual motor starters, contactors and overload relays

ABB CONTACTORS AND MOTOR PROTECTION 6/43

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EF460, EF750, EF1250DU electronic overload relays – 150 to 1250 A

Ordering details

The EF460, EF750 and EF1250DU are self-supplied electronic overload relays, which means no extra ex-
ternal supply is needed. It offers reliable protection for motors in the event of overload or phase failure.
Easy to use like a thermal overload relay and compatible with standard motor applications, the elec-
2CDC231013F0013 tional temperature range and the possibility to select a trip class (10E, 20E, 30E). Further features are
tronic overload relay is convincing, above all, due to its wide setting range, high accuracy, high opera-
the temperature compensation, trip contact (N.C.), signal contact (N.O.), automatic or manual reset se-
lectable, trip-free mechanism, STOP and TEST function and a trip indication. Busbar kits are available
EF460-500 as accessory for contactor mounting. The EF460 and EF750 have ATEX and IECEx certification (1).
Setting Short-circuit Trip class Type Order code Weight
range protective device (1 pce)
A kg
EF460 electronic overload relay, suitable for AF400, AF460 (1) 1.170
2CDC231014F0013 EF750 electronic overload relay, suitable for AF580, AF750 (1)
690 V: 630 A, Type gG
10E, 20E, 30E
150 ... 500
1SAX721001R1101
EF460-500
1000 V: 1600 A, Type gG
1000 V: 1600 A, Type gG
EF750-800 250 ... 800 690 V: 800 A, Type gG 10E, 20E, 30E EF750-800 1SAX821001R1101 3.905 06
EF1250DU electronic overload relay, suitable for AF1350, AF1650, AF2050
375 ... 1250 500 V: 1600 A, Type gG 10E, 20E, 30E EF1250DU-1250 1SFA739001R1001
(1) ATEX is valid for products produced from week 42, 2014. IECEx is valid for products produced from week 15, 2017.

2CDC231014F0013

EF1250DU-1250

38.8 1.53" 186.8 7.35" 0.87" 48.04 1.89" 7.26" 184.4 7.4" 187.9
6" 5.9" 22 4.06" 4.35"
152.3 28.4 1.12" 149.9 153.4 6.04" 103 110.5
74 2.91" 76 2.99"
41.5 1.63"
21 0.83" 83 3.27" 83 3.27" 40.5 1.59"
58 2.28" 58 2.28" 32 1.26" 53.3 2.1" 82 3.23"
28 1.1"
30.9 1.22" 76 2.99"
5.6 0.22"
2.36" 3.15" 100 3.94"
2.17" 60 80
55
0.28" 13 0.51" Ø 5.2 Ø 0.2" 1" Ø7 Ø0.28"
7 19.5 0.77" 25.5
192 7.56" 247 9.72" 2CDC107045C0201
EF460-500 EF750-800
Main dimensions mm, inches