High quality, high performance,perfectionist OL7-63 DC circuit breaker is made up of case, operation mechanism, thermal overloading trip, electromagnetic trip contact system, arc system etc. It has overloading and short circuit protection, unique-design structure and strong permanent magnetism arc system make the product has 6KA short circuit capability. Long mechanical life over 20000 times and beautiful shape. It can be connected with din rail named TH35-7.5 standard stainless type and has the below personality: the handle is designed on the top of the front, people will feel safe and comfortable when operating. When connecting, pay attention to “+, -“ poles; The power goes in from the top and comes out from the underside which is applied with power entrance character. Convenient for installation and saving cables. It is used for 440V circuit 3 poles circuit breaker to connect front loop for two poles serial connection   

Test	Type	Test Current	Original State	The tripping type does not release the time limit	Result	Remark
A	C, D	1.13In	Cold State	T≥1h (In≤63A)	No trip
B	C, D	1.45In	Following A Test	T<1h (In≤63A)	Trip	Current up steadily in 5
C	C	8In	Cold State	T≥0.1s	No trip	Shut auxiliary switch and connect the power
		12In		T<0.1s	Trip
D	D	10In	Cold State	T≥0.1s	No trip
		14In		T<0.1s	Trip

  

OL7 Polarity DC Circuit breaker dc circuit breaker switch