Frame Current Inm(A)

100

225

400

630

Rated current In(A)

10,16,20 
  25,32,40, 
  50,63,80,100

100,125 
  140,160 
  180,200,225

225,250 
  315,350,400

400,500 
  600

Pole number

3

4

3

4

4

4

Rated insulating voltage Ui(V)

AC800

Rated working voltage Ue(V)

AC400

Rated impulse withstand voltage   Uimp(V)

8000

8000

8000

8000

Grade of breaking capacity

M

H

M

M

H

M

M

M

limit short-circuit breaking   capacity Icu(KA)AC400V

50

85

50

50

85

50

65

65

Operating short-circuit breaking   capacity Ics(KA)
  AC400V

35

50

35

35

50

35

42

42

Operational performance

energized

1500

1000

1000

1000

unenergized

8500

7000

4000

4000