No.

Item

Unit

Value

1

Rated voltage 

KV

12

2

Rated lighting impulse withstand voltage

KV

Inter phase or to ground 75,

fructure 80

3

Rated short-time power frequency withstand voltage

KV

Inter phase or to ground 42,

fructure 48

4

Rated short-circuit breaking current

KA

20,25

31.5

40

5

Rated current        

A

630/1250/1600

/2000/2500/3150

6

Rated thermo stability current(valid)

KA

25

31.5

40

7

Rated dynamic stability current(peak) 

KA

63

80

100

8

Rated short-circuit making current(peak)                           

KA

63

80

100

9

Rated operations of short-circuit breaking current

Times

50(40kA is 30)

10

Rated working current of over current and tripping coil

A

5

11

Rated operating sequence                        

0-0.3s-CO-180s -CO

12

Rated current of auxiliarate switch                                   

A

AC10,DC5

13

Rated voltage of energy saving release

V

AC.DC220   AC.DC110

14

Closing time                             

Times

≤75

15

Opening time

≤60(40)

16

Power of energy saving motor

W

275

17

Energy saving time

S

≤15

18

Mechanical life

Times

20000