JM8(NS,current breaker,breaker switch) 1250A

JM8(NS,current breaker,breaker switch) 1250Aseries Mouded case circuit breaker is one new type breakers which this company adopts international advanced design,manufacture technology to develop,the rated insulating voltage is 750V,suitable for AC 50Hz(60Hz),rated working voltage 690V or below,rated working current is 12.5 to 1250Aof circuit and use in distributing electric energy.Non frequent making and breaking in the normal conditions and protecting when circuit and installation are overload ,shortcircuit nad under voltage .Rated shell-rack and the breaker which current is under 400A,take protect effect when mousecage motor is non frequent start, breaking off working and protecting overload,short circuit and under voltge. Typeandmeaning Duetotheshortoffuntionoftheallibaba'seditingboard,thetypeandmeaningsofourproducts willbeshowedbytakingonetypeforexample.E.g:JM8-100D/3"J"---JYCapacity&ElectricCo.Ltd "M"---mouldedcasecircuitbreaker "1"---designcode. "100"---Ratedcurrentofframe,100representstheratedcurrent100A.Anotherclassifications of160,250,400,630. "D"---breakingcapacitygradeofratedlimitingshort-circuit.Another twogrades,N,HandL. "3"---polenumber3.Anothertwopoles,2and4. Main technical specifications Type Rated current(A) Pole number Rated insulating voltag(V) Rated opreating voltage(V) Arcing-over distance(mm) Ultimate short circuit breaking capacity(kA) Servies short circuit breaking capacity (kA) Operation ON OFF JM8-100D 12.5,16, 20,25,32, 40,50,63, 80,100 2P 3P 4P 950 690 orbelow 018 18 1500 8500 JM8-100N 25 25 JM8-100H 70 70 JM8-100L 150 150 JM8-160D 16.20.25. 32.40.50. 63.80.100. 125.160 25 25 1000 7000 JM8-160N 36 36 JM8-160H 70 70 JM8-160L 150 150 JM8-250D 160.180. 200.225. 250 25 25 1000 7000 JM8-250N 36 36 JM8-250H 70 70 JM8-250L 150 150 JM8-400D 200,225, 250,300, 315,400 3P 4P 950 690 orbelow 035 35 1000 4000 JM8-400N 45 45 JM8-400H 70 70 JM8-400L 150 150 JM8-630D 315,350, 400,500, 600,630 35 35 1000 4000 JM8-630N 45 45 JM8-630H 70 70 JM8-630L 150 150