Asia :

Europe & Africa :  

Middle East Area :  

Oceania & America :  

1.Application
SM4 series MCCB is applicable circuit of AC 50/60Hz, rated current up to 400A, for distribute energy of electricity & infrequent making & breaking circuit in normal conditions. The products conforms to IEC60947-2.

2. Specification

Type		SM4-125	SM4-160	SM4-250	SM4-400
Poles number		3	3	3	3
Rated current In(A)		25~125	25~160	125~250	125~400
Rated working voltage Ue(V) (50/60Hz)		500	500	600	600
Rated working voltage Ue (V)		250	250	250	250
Rated insulation voltage Ui~(V)		500	500	690	690
Rated impulse voltage Uimp(kV)		6	6	8	8
Utilisation category		A	A	A	A
Rated limited short-circuit breaking capacity Icu(kA)	230/240V~	22	50	60	70
	400/415V~	16	36	36	40
	440V~	10	20	30	36
	480/500V~	8	14	25	30
	600V~	-	-	20	-
	690V~	-	-	16	-
	250V~	16	-	36	-
Rated short-circuit breaking service capacity Ics(%Icu)		100	100	100	100
Mechanical life		7000	7000	7000	5000
Electrical life		1000	100	1000	800

3. Outline and Installation Dimension