Rated voltage (kV)

7.2

12

17.5

24

Rated Insulation Level (kV)
        Power frequency /1 min
        Impulse/1,2x50µs

20
60

28
75

38
95

50
125

Rated frequency (Hz)

50/60

50/60

50/60

50/60

Rated current for main busbar (A )

3150

3150

3150

2500

Rated short-time withstand current (kA/3s)

50

50

40

31.5

Peak curent ( kA )

125

125

95

78.8

Rated current (A )

630
1250
1600
2000
2500
3150

630
1250
1600
2000
2500
3150

630
1250
1600
2000
2500
3150

630
1250
1600
2000
2500
-

Vacuum circuit breakers
       Rated current ( A )
       Rate interrupting current ( kA )

630-3150
50

630-3150
50

630-3150
40

630-2500
31.5

Degree of protection
       Outside
       Inside

IP4X
IP2X

IP4X
IP2X

IP4X
IP2X

IP4X
IP2X

Designed for short-time current and internal arcing resistance

x

x

x

x

Ambient temperature

Between -5°C up to 50°C maximum

Altitude

Up to 1000m

Humidity

Over 90%