Low Voltage Intelligent Circuit Breaker Acb

QDW3 series universal Air circuit breaker(hereinafter referred to as breaker)is suitable for the circuit of AC 50Hz with rated voltage 400V, 690V and rated current up to 6300A. It is mainly used to distribute electric energy and protect circuits and power-supply equipment from overload, under-voltage, short-circuit and single-phase earthing. with intelligentized and selective protection functions, the breaker can improve the reliability of power supply, and avoid unnecessary power failure. The breaker is applicable for power stations, factories, mines(for 690V) and modern high-buildings, especially for the distribution system of intelligentized building. This breaker conforms to IEC60947-2 and GB14048.2 and CE.Specifications of Q&S brand QDW3 series Intelligent Air circuit breakerType  QDW3 -2000QDW3-3200QDW3-6300Pole  3P, 4P3P, 4P3P, 4PUsing category  BBBRated current In A630, 800, 1000, 1250, 1600, 20002000, 2500, 30004000, 5000, 6300Rated frequency Hz50/6050/6050/60Rated operation voltage Ue V400  690400   690400  690Rated insulation voltage Ui V800800800Arcing distance mm000Rated impulse withstanding voltage Uimp V800080008000Rated operation short circuitbreaking capacity Ics(O-t-CO-t-CO)400Vka5080100690Vka405075Rated limiting short circuitbreaking capacity Icu(O-t-CO)400Vka80100120690Vka506585Rated short circuit closing capacity Icm400Vka176220264690Vka105143187Rated short time withstandingcurrent Icw(O-t-CO, AC400V 0.4s)400Vka506585Operation lifeper hourTimes202010 ElectricalTimes1000500500 MechanicalTimes1000050005000Full breaking time ms20~3020~3020~30Full closing time ms55~7055~7055~70Power consumption3PW36012002000 4PW45017502300Resistance of each poleFixed typeμ Ω119- Draw out typeμ Ω201410Dimensions(L*W*H)3P fixed typemm362*323*402422*323*402  3P draw out typemm375*461*452435*471*452  4P fixed typemm457*323*402537*323*402  4P draw out typemm470*461*452550*471*452 Approximate weight3P fixed typekg4155  3P draw out typekg7195245 4P fixed typekg51.565  4P draw out typekg86115260/* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1