CKG3(4).JCZ8-
160/7.2(12)KV

CKG3(4).JCZ8-
250/7.2(12)KV

CKG3(4).JCZ8-
400/7.2(12)KV

CKG3(4).JCZ8-630/7.2(12)KV

Rated voltage of main circuit (KV)

7.2(12)

7.2(12)

7.2(12)

7.2(12)

Rated current of main circuit (A)

one hundred and sixty

two hundred and fifty

four hundred

six hundred and thirty

Main circuit closing capability (A/100 times)

one thousand and six hundred

two thousand and five hundred

four thousand

six thousand and three hundred

Main circuit on/off capability (A/25 times)

one thousand two hundred and eighty

two thousand

three thousand and two hundred

five thousand

Ultimate breaking capacity (A/3 times)

three thousand and two hundred

four thousand

four thousand and five hundred

six thousand and three hundred

Mechanical Help Life (10000 times)

one hundred

one hundred

one hundred

one hundred

power frequency

Withstand Voltage Test

Main circuit withstand voltage (fracture) KV

32 (42)

32 (42)

32 (42)

32 (42)

Same thing. Phase one ground KV

Lightning impulse withstand voltage KV

60 (75)

60 (75)

60 (75)

60 (75)

Control circuit KV

two

two

two

two

100 ％

rated voltage

Closing time in milliseconds

3 0 ± 5

3 0 ± 5

3 0 ± 5

3 0 ± 5

Opening time ms

20 ± 5

20 ± 5

20 ± 5

20 ± 5

Closing bounce time ms

＜ 3

＜ 3

＜ 3

＜ 3

Opening bounce time ms

＜ 1

＜ 1

＜ 1

＜ 1

Zhongrui Pressure (N)

＞ 180

＞ 180

＞ 180

＞ 180

Contact opening distance (mm)

6 (7) ±

6 (7) ±

6 (7) ±

6 (7) ±

Overtravel (mm)

2 ± 0.5

2 ± 0.5

2 ± 0.5

2 ± 0.5

Main circuit resistance（μ Ω)

≤ 100

≤ 100

≤ 100

≤ 100