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
EF205, EF370 electronic overload relays
Technical data
Main circuit – Utilization characteristics according to UL/CSA
Type EF205, EF370
Standards
Maximum operational voltage
Trip rating
Full load amps (FLA)
Short-circuit rating RMS symmetrical
Short-circuit protective device
Auxiliary circuit according to UL/CSA
Type EF205, EF370
Contact rating
Conventional thermal current
N.C., 95-96
N.O., 97-98
Full load amps and short-circuit protective device
Type Full load amps (FLA) Short-circuit protective device
480 V AC 600 V AC
SCCR Fuse type SCCR Fuse type SCCR Fuse type
EF205-210
EF370-380
210 A 10 kA 400 A, R5/RK5 10kA 400 A, R5/RK5 100 kA 400 A, J
380 A 18 kA 800 A, L/T 18kA 800 A, L/T - -
UL 508, CSA 22.2 No. 14, UL 60947-4-1A
600 V AC
125 % of FLA
See table "Full load amps and short-circuit protective device"
See table "Full load amps and short-circuit protective device"
See table "Full load amps and short-circuit protective device"
B600, Q600
B600, Q600
6 A
C4 | ABB
2CDC107040C0201
EF205, EF370 electronic overload relays
Technical data
General data
Type EF205, EF370
Pollution degree
Phase loss sensitive
Ambient air temperature
Operation Open - compensated acc. to IEC/EN 60947-4-1
Storage
Ambient air temperature compensation
Maximum operating altitude permissible
Resistance to shock acc. to IEC 60068-2-27
Resistance to vibrations acc. to IEC 60068-2-6
Mounting position
Mounting
Degree of protection
main circuit terminals
housing
Electrical connection
Main circuit
Type EF205 EF370
Connecting capacity
Rigid
Flexible
Lugs
Bars
Stranded acc. to UL/CSA
Flexible acc. to UL/CSA
Stripping length
Tightening torques
Connection screw
3
Yes
-25 ... +70 °C
-50 ... +85 °C
Acc. to IEC/EN 60947-4-1
2000 m
25 g / 11 ms
5 g / 3 … 150 Hz
Position 1-6
Mount on the contactor and tighten the screws of the main circuit terminals
IP20
IP00
1 x
16 ... 185 mm²
2 x
16 ... 120 mm²
1 x
16 ... 185 mm²
2 x
16 ... 120 mm²
L ≤
24 mm 32 mm
Ø >
8 mm 10 mm
1 x
AWG 6-0000
2 x
AWG 6-0000
1 x
AWG 6-0000
2 x
AWG 6-0000
- 18 Nm / 160 lb.in 28 Nm / 247 lb.in
M8 M10
50 ... 240 mm²
50 ... 150 mm²
50 ... 240 mm²
50 ... 150 mm²
AWG 1-500 kcmil
AWG 1-500 kcmil
AWG 1-500 kcmil
AWG 1-500 kcmil
Auxiliary circuit
Type EF205, EF370
Connecting capacity
Rigid
Flexible with ferrule
Flexible with insulated ferrule
Flexible
Stranded acc. to UL/CSA
Flexible acc. to UL/CSA
Stripping length
Tightening torques
Connection screw
1 or 2 x
1 ... 4 mm²
1 or 2 x
0.75 ... 2.5 mm²
1 or 2 x
0.75 ... 2.5 mm²
1 or 2 x
0.75 ... 2.5 mm²
1 or 2 x
AWG 18-10
1 or 2 x
AWG 18-10
9 mm
0.8 ... 1.2 Nm / 7 ... 11 Ib.in
M3.5 (Pozidriv 2)
2CDC107040C0201
ABB | C5
Loading...