China Earth Leakage Circuit Breaker

SCM1L series earth leakage circuit breaker are one of the new type earth leakage breaker switch have been developed by the company using international advanced design and manufacturing technology. Suitable for a line of AC50Hz/60Hz, rated voltage up to 400V, rated current16A to 630A. And is acted as infrequent changeover of circuit or infrequent starting of motor. The breaker has overload, short-circuit and under-voltage protective function, which can protect the circuit and the power equipment against damage, meanwhile, it can provide protection to these fire dangers that caused by these long-time existed grounding fault that can not be detected by the over-current protection.
This breaker can be installed vertically(upright) or horizontally(transverse). Wiring of the breaker can not be in adverse direction, that means power supply line must be connected to terminal 1, 3 and 5, and the load line connected to terminal 2, 4 and 6. The rated residual operating current In and the maximum breaking time can be adjusted on site according to practical condition.
The leakage protection module still can work normally when the phase voltage reduce to 50V. It has the same overall size with the CM1 series breakers, which make the installation more exchangeable.
The breakers are suitable for isolation, its symbol are: The breakers comply with the demands of the following standards: IEC60947-1 and GB/T 14048.1GeneralIEC60947-2 and GB 14048.2Low voltage breakersIEC60947-4 and GB 14048.4Contactors and motor startersIEC60947-5.1 and GB 14048.5Electrical equipments of electromechanical control circuit.

TypeCM1L-100CM1L-225CM1L-400frame Current Inm(A)100225400Rated current In(A)(10)16,20,25,32,40,50,63,80,100100,125,160,180,200,225225,250,315,350,400Pole Number343434Rated Insulation Voltage Ui(V) AC800Rated Working voltage Ue(V) AC 400VRated impulse with stand voltage Uimp(V) 8000Arc-over Distance(mm) >50Breaking capacity gradeMH MH M Limiting short-circuit breaking capacity lcu (kA)AC400V50855050855065Service short-circuit breaking capacity lcs(kA)AC400V35503535503542Rated residual operating current I n(mA)Non-delay type 100/300/500 Delay type 100/300/500Rated residual nonoperatingcurrent I no(mA) 1/2 I nOperation performance (time)Electrified150010001000 Unelectrified850070004000