Atlas Copco Stationary Air Compressors User Manual
Instruction book
2920 1521 00
36
7.3 Overload relays for SF1-8
Frequency Voltage
SF1
single-
phase
single-
phase
SF2
single-
phase
single-
phase
SF2
3-phase
3-phase
SF4
3-phase
3-phase
SF6
3-phase
3-phase
SF8
3-phase
3-phase
IEC
50 Hz
230 V
12 A
14.5 A
8.3 A
14 A
8.3 and 14 A
2x 14 A
50 Hz
400 V
4.8 A
8.2 A
4.8 and 8.2 A
2x 8.2 A
60 Hz
380 V
5.1 A
8.5 A
5.1 and 8.5 A
2x 8.5 A
50 Hz
500 V
3.8 A
6.5 A
3.8 and 6.5 A
2x 6.5 A
CSA/UL
60 Hz
230 V
10.2 A
14.7 A
9.2 A
15.3 A
9.2 and 15.3 A 2x 15.3 A
60 Hz
440/460 V
4.6 A
7.7 A
4.6 and 7.7 A
2x 7.7 A
Note: SF6 Twin have compressor modules of a different size, the first value is valid for the smaller
SF2 module and the second one is valid for the bigger SF4 module
7.4 Overload relays for SF6-15 Multi
Frequency Voltage
SF6
3-phase
SF8
3-phase
3-phase
SF11
3-phase
3-phase
SF15
3-phase
3-phase
IEC
50 Hz
230 V
8 and 14 A
2x 14 A
3x 14 A
4x 14 A
50 Hz
400 V
4.8 and 8 A
2x 8 A
3x 8 A
4x 8 A
60 Hz
380 V
5 and 8.5 A
2x 8.5 A
3x 8.5 A
4x 8.5 A
50 Hz
500 V
3.6 and 6.4 A 2x 6.4 A
3x 6.4 A
4x 6.4 A
CSA/UL
60 Hz
230 V
9 and 15 A
2x 15 A
3x 15 A
4x 15 A
60 Hz
440/460 V
4.5 and 7.5 A 2x 7.5 A
3x 7.5 A
4x 7.5 A
60 Hz
575 V
3.5 and 5.5 A 2x 5.5 A
3x 5.5 A
4x 5.5 A
Note: SF6 have compressor modules of a different size, the first value is valid for the smaller SF2
module (lower element) and the second one is valid for the bigger SF4 module (higher element)