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 , Mini Circuit Breaker >> BKN(LG) SERIES

BKN Series Miniature Circuit Breaker
1.Application
BKN-63 miniature circuit breaker is applicable to a line of AC 50Hz/60Hz, 230V in singlepole, 400V in double, three, four poles for protecting overload and short circuit, and rated cur-rent up to 63A. It can also be used for infrequent line conversion under the normal condition.Thebreaker is applicable to lighting distribution system in industrial enterprise, commercially district,high-rise building and dwelling house. It conforms with the standards of IEC60898.
2.Main Technical Parameter

Type

BKN-63

Pole

1P

2P, 3P, 4P

Rated current (A)

1,2,3,4,5,6,10,16,20,25,32,40,50,63

Rated voltage(V)

230

400

Type of instantaneous release

B     C

D

B       C

D

Rated short circuit breaking capacity Icn(KA)

1-40A: 6

4.5

1-40A: 6

4.5

50-63A: 4.5

50-63A: 4.5

Life (times)

1-32A

Electric life

no less than 6000 operations

Mechanical life

(O-C) no less than 20000 operations

Operation frequency

240 times per hour

40-63A

Electric life

no less than 6000 operations

Mechanical life

(O-C) no less than 20000 operations

Operation frequency

120 times per hour

3.Applicable conducting wire

Rated current(A)

Nominal cross section of wire mm2

1-6A

1

10A

1.5

16,20A

2.5

25A

4

32A

6

40,50A

10

63A

16

4.The over-current protection property

Ambient Temperature

Initial Status

Test Current

Expected Result

Expected Result

Note

30\2oC

Cold position

1.13In

t1h

Non-release

-

Carried out immediately after previous test

1.45In

t<1h

Release

-

Cold position

2.55In

1s<t<60s (In32A)

Release

Current smoothly rises to specified #118alue within 5s

Cold position

2.55In

1s<t<120s (In>32A)

Release

-5~+40oC

Cold position

3In

t0.1s

Non-release

Type B

Cold position

5In

t<0.1s

Release

Type B

Cold position

5In

t0.1s

Non-release

Type C

Cold position

10In

t<0.1s

Release

Type C

Cold position

10In

t0.1s

Non-release

Type D

Cold position

20In

t<0.1s

Release

Type D

5.Dimension

 

 

 

 

 

 

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