BKN 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.
Main Technical Parameter
Type
BKN
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
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
The over-current protection property
Ambient
Temperature
Initial
Status
Test Current
Expected Result
Expected Result
Note
30±2℃
Cold
position
1.13In
t≥1h
Non-release
-
Carried out immediately after previous test
1.45In
t<1h
Release
-
Cold position
2.55In
1s<t<60s
(In≤32A)
Release
Current smoothly rises to specified value within
5s
浙公网安备 33038202003968号