Poles:3 Rated insuiating voltage:6000/8000V. Rated operating voltage:500/600V. Breaking capacity:8~70kA Certificate:CCC,CE 1.ApplicationAM4 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 TypeAM4-125AM4-160AM4-250AM4-400Poles numberRated current In(A)Rated working voltage Ue(V) (50/60Hz)Rated working voltage Ue (V)Rated insulation voltage Ui~(V)Rated impulse voltage Uimp(kV)Utilisation categoryAAAARated limited short-circuit breaking capacity Icu(kA)230/240V~400/415V~440V~480/500V~600V~---690V~---250V~--Rated short-circuit breaking service capacity Ics(%Icu)Mechanical lifeElectrical life

3	3	3	3
25~125	25~160	125~250	125~400
500	500	600	600
250	250	250	250
500	500	690	690
6	6	8	8
22	50	60	70
16	36	36	40
10	20	30	36
8	14	25	30
20
16
16	36
100	100	100	100
7000	7000	7000	5000
1000	100	1000	800

3. Outline and Installation Dimension 

AM4 Series Moulded Case Circuit Breaker