MCB

They have protective function against short circuit and overload,and are used in lighting distribution system in industry. commerce and dwelling,and protect fractional electric motors,Add they also have many merits of high protective grade(up to IP20) high break capacity,reliable sensitive action,convenient,multiple assembling,long life etc.They are mainly adapted to the circuit of AC50Hz,230V. Meanwhile,they are also used in turning on or off the electric apparatus and lighting circuit under the normal condition. Technical data Standard IEC898,GB10963-99,EN60898 Number of poles 1P.2P.3P.4P Rated current(In) 1,2,3,4,6,10,16,20,25,32,40,50,63 Rated voltage(Un) AC230/400V Rated frequency 50/60Hz Tripping curve B,C,D Release action characteristics Time delay 1.13In≥1h non-trip 1.45In<1h trip 2.55In 1S<60S trip Instantaneous(Curve C) 5In≥0.1S non-trip 10In<0.1 trip Magnetic releases operate B curve:between 3 and 5In C curve:between 5 and 10In D curve:between 10 and 14In Rated breaking capacity(Lcn) 6000A Endurance ≥2000 Circumstance temperature -5°C+40°C Electrical life ≥8000times Mechanical life 20000 times Tropical ration Treatmen 2(RH95%,at 55°C) Protection degree IP20