6KA Miniature Circuit Breaker PV DC Systems KNB2-63DC

6KA Miniature Circuit Breaker PV DC Systems KNB2-63DC

KNB2-63 DC circuit-breakers are used in communication systems and PV DC systems.KNB2-63 series Miniature Circuit Breaker is nice inappearance,reasonable in structure,sound in feature and high in breaking capacity.Installed with standard din rail,it is convenient and easy inusage.It is rated working voltage to 250/500/1000V,and rated current to 63A as protection against short-circuit.It can be used as infrequenton-and-off operation and changeover.
It complies with standard of IEC/EN60947-2.

Basic specification and main parameters
The over-current tripping unit protection feature

Frame class	63A
Rated working voltage	250/500/1000V
Rated working current	1,2,3,4,6,10,13,16,20,25,32,40,50,63A
Making and breaking capacity	6000A
Poles	1,2,4P
Mechanical life	20000
Electric life	1500

Sequence	Test current I/ln	Start state	Tripping time	Expected result
1	1.05 n	Cold state	t≤1h	Not tripping
2	1.3In	Start right after NO.1 test	t<1h	Tripping
3	8ln	Cold state	t<0.1s	Not tripping
4	12In	Cold state	t<0.1s	Tripping