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Electrical Characteristics
Family
SF
Modular size
1 module
2 module
4 module
Reference
SFH125 SFM125 SFT125 SFH225 SFT225 SFT240 SF263
Thermal current Ith (40°C)
25A
25A
25A
25A
25A
40A
63A
Operational frequency
50 / 60 Hz 50 / 60 Hz 50 / 60 Hz 50 / 60 Hz 50 / 60 Hz 50 / 60 Hz 50 / 60 Hz
Rated operation voltage in AC
230V
Rated insulation voltage (Ui)
440V
440V
440V
440V
440V
440V
500V
Rated impulse withstand voltage
Uimp
4 KV
4 KV
3 KV
6 KV
6 KV
6 KV
4 KV
Protection degree
2
2
2
3
2
2
2
Working temperature
-20 to 50°C -20 to 50°C -20 to 50°C -20 to 50°C -20 to 50°C -20 to 50°C -20 to 50°C
Storage temperature
-40 to 80°C -40 to 80°C -40 to 80°C -40 to 80°C -40 to 80°C -40 to 80°C -40 to 80°C
Operational Currents I e
Rated voltage
Load duty
category
400V AC
AC 22A
25A
25A
25A
25A
25A
40A
63A
400V AC
AC 22B
25A
25A
25A
25A
25A
40A
63A
Short circuit characteristic
Rated short time withstand cur-
rent 1s Icw (rms)
IEC 60947-3 375A / 1sec
600A /
1sec
4.5kA
cond.
Prospective short circuit current
(rms)
EN 60669 3kA
3kA
3kA
6kA
6kA
n/a
n/a
Mechanical characteristic
Rigid cable section
35 mm2
35 mm2
35mm2
25 mm2
25 mm2
25 mm2
25 mm2
flexible cable section
10 mm2
10 mm2
10 mm2
16 mm2
16 mm2
16 mm2
16 mm2
Tightening torque
1.8 Nm 1.8 Nm 1.8 Nm 1.8 Nm 1.8 Nm 1.8 Nm 1.8 Nm
IP protection degree
20
20
20
20
20
20
20
Mechanical endurance (number
of cycle)
200,000 200,000 200,000 200,000 200,000 200,000 100,000
Electrical endurance @ AC22
(number of cyles)
25,000 25,000 25,000 5,000
5,000
2,500
5,000
Overall dimension
Width (mm)
17.5
17.5
17.5
35
35
35
71.5
Height (mm)
83
83
83
83
83
83
90
Depth (mm)
68
68
68
68
68
70
68
Modular Changeover Switches
Modular
Devices