Control protective switching devices

a new product in low voltage electric.

 Main technical data:1) Two outline dimensions (C and D frame size): 3-pole and 4-pole2) Current ratings: C Frame: 12A, 16A, 18A, 32A, 45A;  D Frame: 45A, 63 A,100A,125A3) setting current: 0.16A~125A4) Short-circuit break capacity: a) 35kA for type C (economic)  b) 50kA for type Y (standard)  c) 80kA for type H (high capacity)5) Opening time under prospective short-circuit current is 2 ~ 3ms, at current limiting of 0.2 and below.

Functions:

MKB0 adopts modularized single structure and integrates main function of traditional circuit breaker ,fuse, contactor, overload (or over current, open phase) relay, starter and isolator, it owns remote automatic control and local direct manual control function as well panel indication and electrical signal alarm function, it also has coordinated time-current protection characteristic (three sections protection characteristics of inverse time delay, definite time delay and instantaneous), shown as fig. 4. Functional module and accessory can be selected and used to realize control and protection for general (infrequent start) motor load, motor load of infrequent start and distribution circuit load according to requirement.

 

Inm frame current	Rated current of main body In(A)	Rated current of intelligent controller le(A)	Current setting of short delay triiping Ir2(A)	Current setting of long delay triiping Ir1(A)	Controllable capacity at 380V(KW)	Usage category
45	1216183245	0.4	0.48-4.8	0.16-0.4	0.05-0.12	AC-42AC-43AC-44
		1	1.2-12	0.4-1	0.12-0.33
		2.5	3-30	1-2.5	0.33-1
		4	4.8-48	1.6-4	0.33-1.6
		6.3	7.5-75	2.5-6.3	1-2.5
		12	14.4-144	4.8-12	2.2-5.5
		16	19.2-192	6.4-16	2.5-7.5
		18	21.6-216	7.2-18	3.0-7.5
		25	30-300	10-25	5.5-11
		32	38.4-384	12.8-32	5.5-15
		40	48-480	16-40	7.5-18.5
		45	54-540	18-45	7.5-22
		6.3	7.5-75	2.5-6.3	1-2.5
125	161832455063100125	12	14.4-144	4.8-12	2.2-5.5
		16	19.2-192	6.4-16	2.5-7.5
		18	21.6-216	7.2-18	3.0-7.5
		25	30-300	10-25	5.5-11
		32	38.4-384	12.8-32	5.5-15
		40	48-480	16-40	7.5-8.5
		45	54-540	18-45	7.5-22
		50	60-600	20-50	7.5-22
		63	75.6-756	25.2-63	11-30
		80	96-960	32-80	15-37
		100	120-1200	40-100	18.5-45
		125	150-1500	50-125	22-55

Control protective switching devices