High Breaking Capacity Magnetic Moulded Case MCCB Circuit Breaker Ah-400L

1. Application of moulded case circuit breakerAHM1 series moulded case circuit breaker is one of products developed and manufactured by adopting international advanced technology. It is supplied with rated insulating voltage 550 and 800V and used for circuit of AC 50/60Hz, rated operating voltage AC 400V (or below), rated operating current up to 1600A for infrequent changing over and starting of the motors.The products conforms to IEC60947-2 standard.2. Main Technical Specification(table1) of moulded case circuit breakerTypeRatedcurrent (A)Polenum-berRatedinsui-atingvolt-age(V)Ratedoperat-ingvolt-age(V)Arcing-overdistance(mm)Ultimateshortcircuitbreakingcapacity(KA)Serviesshortcircuitbreakingcapacity(KA)Operationperform-anceUtiliza-tioncat-egoryLoadUnloadCM1-63L(6),1016,2025 ,3240,50633, 4500V400V0251815008500ACM1-63M05035CM1-100L(10),1620,2532,4050,6380,100800V0(≤50)3522CM1-100M0(≤50)5035CM1-100H0(≤50)855010007000CM1-225L100,125160,180200,225≤503522CM1-225M≤505035CM1-225H≤50855010004000CM1-400L225,250315,350400≤505035CM1-400M≤1006542CM1-630L400,500630≤1005035CM1-630M≤1006542CM1-630H≤10010065CM1-800M630,7008003≤1007550CM1-800H≤10010065CM1-1250M1000,1250≤10010065CM1-1250H≤10012575CM1-1600M1600≤10015080Note: 6A without thermal protectionThe N-pole of four-poles breaker is sited at the right side of the product has four types: Type A: Without current trip-lease on N pole which making all the time, not closing and opening with the other three poles. Type B: Without current trip-release on N pole which closing and opening with the other poles. Type C: With current trip-release which closing and opening with the other three poles.Type D: With current trip-release which making all the time not closing and opening with the other three poles. 3. Protection Characteristic of moulded case circuit breakerThe thermodynamic  release of a circuit breaker provides the feature of inverse time-delay, while the magnetic release is the instantaneous operation as shown on table 2(distribution circuit breaker) and table 3 (motor protection circuit breaker). Table2Rated current of release (A)ThermodynCMic release( CMbient temperature ) land +40°C marine +45°COperating current of magnetic release (A)1.05In(cold state) Inoperative time(h)1.30In(heat state) Operative time(h)10≤In≤63≥ 1< 110In±20%63Ir);Short-circuit (ST or instantaneous protection)( >Im);Phase failure (right LED);Microprocessor malfunction ( (>Ir) ( >Im) and phase failure LEDs all go on )Battery powered. Spare battery are supplied in an adapter box. When a fault occurs ,the LEDindicating the type of fault ,lights for about 10 minutes . The information is however stored inmemory . The LED can be illuminated by pressing the test pushbutton. The LED automaticallygoes off and the memory is cleared when the circuit breaker is reset .TM thermal release(from 16 to 250A)STR22SE electronic release(from 40 to 250A)STR223E electronic release(from 250 to 630A)4.Accessories  AccessoriesRated operating voltageConsumptionFor typePick-upSeal-inShunt release(MX)24V100V220/230V380/400V