DW45 Moulded Case Circuit Breaker

 

Applications:
DW45 series intelligent air breaker is applicable for distribution network of AC50Hz,rated voltage of 400V and 690V,and rated current of 630A - 320A,to distribute electric energy protection circuit and prevent power equipments from harm of overload,under-voltage,short circuit and single-phase earth etc.Provided with intelligent protecting function and precise selective protection,breaker can enhance the dependability of power supply and avoid unwanted power cut.

Specifications:

Frame size rated current inm(A)	Rated current InA	Rated insulation voltage(v)	Rated limit short-circuit breaking capacity lcu(kA)		Rated operating short-circuit breaking capacity lcu(kA)		Rated short-time withstand current lcw kA(1s)
			400V	690V	400V	690V
2000	630 800 1000 1250 1600 2000	690	80	50	50	40	50
3200	2000 2500 3200		100	65	65	50	65
4000	3200 3600 4000		100	65	65	50	65/80
6300	4000 5000 6300		120	80	80	70	85/100

Note:1.Arcing-over distance is zero.
         2.Numerator as standard type denominator as high-breaking type,
Breaker's shunt excitation release,under-vltage release,electric operating mechanism,clsed electro magnet rated operating voltage as well as required power,the operating voltage of intelligent release is AC 380V,220V;DC 220V,110V.

Type		AC(50Hz)		DC
		220V	400V	110V	220V
Shunt Release		24VA	36VA	24W	24W
Under-voltage Release		24VA	36VA	-	-
Electric Operating Mechanism	2000A	85VA	85VA	85W	85W
	3200A	125VA	125VA	125W	125W
	4000A	110VA	125VA	125W	125W
	6300A	150VA	110VA	110W	110W
Closing Electromagnet		24VA	150VA	150W	150W

Note:The reliable operation voltage range of shunt excitation release is (70%-110%)Us,while that of closed electro magnet and electric operating mechanism is (85%-110%)Us.
Making and breaking capacity of auxiliary contact under decided un-normal operating conditions.

Current type	Operating type	Rated control capacity(Pe)	Rated operating voltage(Ue)	Making and breaking capacity				Make-break operating cycle frequency and operating frequency
				U/Ue	1/le	cos	t 0.95-30	Operating cycle frequency	operating cycle frequency per minute	Making time
AC	AC-15	300VA	380V	1.1	10		-	0.3	6(or the same as operating frequency of main loop)	0.05
DC	DC-13	60A	220V	1.1	1.1	-	30

Dimenision:

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