Parameter name

Unit

Value

Rated voltage

kV

40.5

Rated normal current

A

630,1250

Rated frequency

Hz

50

Rated short-time (1 min) frequency withstand voltage

kA

70

Rated lightning impulse withstand voltage

kA

Rated short-time withstand current

kA

20

Rated short-circuit continuous time

S

4

Rated peak withstand current

kA

50

Rated short-circuit making current

kA

50

Rated active load breaking current

A

630

Rated loop-locked breaking current

A

630

Rated electric cable be charged breaking current

A

10

Mechanical life

10000

Contact automatic

N

70±20

Force required to hold contacts open at full stroke

N

130±20

Rated contact pressure time-limit loop resistive

μΩ

≤40

Contact-wear allowance thickness

Mm

3

Internal gas pressure

Pa

≤1.33×10^-3

Shelf life

20