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Product Details

BKNSeries Miniature Circuit Breaker

1. Application

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.

2. 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

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±2^oC	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
	Cold position	2.55In	1s<t<120s (In>32A)	Release	Current smoothly rises to specified value within 5s
-5~+40^oC	Cold position	3In	t≤0.1s	Non-release	Type B
	Cold position	5In	t<0.1s	Release	Type B
	Cold position	5In	t≤0.1s	Non-release	Type C
	Cold position	10In	t<0.1s	Release	Type C
	Cold position	10In	t≤0.1s	Non-release	Type D
	Cold position	20In	t<0.1s	Release	Type D