serial number

parameter name

unit

numerical value

one

rated voltage

KV

seven point two

two

rated current

A

six hundred and thirty

three

rated frequency

HZ

fifty

four

Short term (1-minute) power frequency withstand voltage

KV

thirty-two

five

Rated breaking current (maximum/minimum)

KA

5.0/0.12

six

Maximum breaking current

KA

six point three

seven

Rated turn-on current

KA

six point three

eight

Withstand overload current

KA

six point three

nine

electrical life

ten thousand times

25 (AC-3 category)

ten thousand times

1 (AC-4 category)

ten

mechanical life

ten thousand times

thirty

eleven

Contact self closing force

N

85±20

twelve

Contact reaction force at rated opening distance

N

130±20

thirteen

Circuit resistance under self isolation

μ Ω

≤100

fourteen

Allowable wear thickness of contacts

mm

two

fifteen

Internal gas pressure

Pa

≤1.33×10^-3

sixteen

Quality of the sports section

Kg

zero point four

one

contact gap

mm

4±0.5

two

Average opening speed

m/s

0.45±0.05

three

Average closing speed

m/s

0.25±0.05

four

Rated contact pressure

N

100±20

five

Contact closing bounce time

ms

≤2

six

Three phase synchronicity

ms

≤1

seven

Contact stroke of contacts

mm

one point five^+0.5₀