ABB EF370-380 Data Sheet
EF205, EF370 electronic overload relays
122.8 4.83"
63 to 380 A
Description
The EF205 and EF370 are self-supplied electronic overload relays, which means no extra external 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 electronic overload
relay is convincing, above all, due to its wide setting range, high accuracy, high operational temperature
range and the possibility to select a trip class (10E, 20E, 30E). Further features are the temperature
compensation, trip contact (N.C.), signal contact (N.O.), automatic or manual reset selectable, trip-free
mechanism, STOP and TEST function and a trip indication. The overload relays are connected directly to
2CDC231010V0012
EF205-210
2CDC231013V0012
EF370-380
the contactors.
Ordering details
Setting range Short-circuit
protective device
A kg
63 ... 210 1250 A, Fuse type gG 10E, 20E, 30E EF205-210 1SAX531001R1101 1.210
115 ... 380 1600 A, Fuse type gG 10E, 20E, 30E EF370-380 1SAX611001R1101 1.430
Trip class Type Order code Weight
(1 pce)
Main dimensions mm, inches
105 4.13"
7.4 0.29" 17.9 0.7"
5 0.2"
11 0.43"
122 4.8"
18.5 0.73"
35
7.4 0.29"
1.38"
17.5 0.69"
35 1.38"
105 4.13"
17.9 0.7"
5 0.2"
11 0.43"
Ø 8.5 Ø 0.33"
EF205-210
93.8 3.69"
151 5.9" 10 0.39"
10 0.39"
122 0.4'
163.6 6.4" 10 0.39"
122.8 4.83"
116.5 4.59"
30 1.18" 5 0.2"
5 0.2"35 1.38"
121.7 4.79"
30 1.18"
2CDC232004F0012
116.5 4.59"
5 0.2"
C2 | ABB
22.8 0.9"
Ø 11 Ø 0.43"
EF370-380
43.8 1.72"43.8 1.72"
20 0.79"
35 1.38" 5 0.2"
14 0.55"
121.7 4.79"
2CDC232005F0012
2CDC107040C0201
EF205, EF370 electronic overload relays
Technical data
Main circuit – Utilization characteristics according to IEC/EN
Type EF205, EF370
Standards
Rated operational voltage U
Rated frequency
e
Trip class
Number of poles
Duty time
Operating frequency without early tripping
Rated impulse withstand voltage U
Rated insulation voltage U
imp
i
Auxiliary circuit according to IEC/EN
Type EF205, EF370
Rated operational voltage U
Conventional free air thermal current I
Rated frequency
Number of poles
Ie / Rated operational current AC-15
acc. to IEC/EN 60947-5-1 for utilization category
110-120 V
220-230-240 V
400 V
480-500 V
Ie / Rated operational current DC-13
acc. to IEC/EN 60947-5-1 for utilization category
24 V
60 V
110-120-125 V
250 V
Minimum switching capacity
Short-circuit protective device
Rated impulse withstand voltage U
Rated insulation voltage U
e
th
50/60 Hz
50/60 Hz
50/60 Hz
50/60 Hz
imp
i
IEC/EN 60947-1, IEC/EN 60947-4-1, IEC/EN 60947-5-1
1000 V AC
50/60 Hz
10E, 20E, 30E, selectable
3
100 %
Up to 15 operations/h, see "Technical diagram – Intermittent periodic duty"
8 kV
1000 V
600 V AC / DC
6 A
DC, 50/60 Hz
1 N.C. + 1 N.O.
3.00 A
3.00 A
1.10 A
0.75 A
1.50 A
0.55 A
0.55 A
0.27 A
12 V / 3 mA
6 A, Fuse type gG
6 kV
690 V
Technical diagram – Intermittent periodic duty
(Op/h)
140
120
100
80
60
switching frequency
40
t = 3 s
a
t = 5 s
a
20
0
020406080100 (%)
ta: Motor starting time
t = 1 s
a
t = 1.5 s
a
t = 0.5 s
a
duty ratio
2CDC232005F0211
2CDC107040C0201
ABB | C3
Loading...