NB-CM1 Moulded Case Circuit Breaker

Short Description:

Moulded case circuit breakers NB-CM Iseries is a new designed MCCB developed and manufactured adopting international advanced technology. NB-CM1 MCCB rated insulating voltage AC800V is suitable for using in the circuit ofAC50HZ/60H乙rated voltage up to 690V,rated working current up to 630A to distribute electric power and to protect the line and the equipment from being damaged due to overload, short current and undervoltage. It can also be used for infrequently switch and starting of motor and for motor overload, short circuit and under-voltage protections. JM1 MCCB with the advantages of the small volume, high breaking capacity, short over-arcing, strong anti-vibration and so on.

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STANDARDS

△ IEC60947-1 and GB/T14048.1 General

△ IEC60947-2 and GB/T14048.2 Low voltage breakers

△ IEC60947-4 and GB/T14048.4 Contactors and motor starters

△ IEC60947-5.1 and GB/T14048.5 Electrical equipment of electromechanical control circuit.

K SPECIFICATION

Type	Rated current(A)	Pole number	Rated insulating voltage(V)	Rated operating voltage(V)	Arcing-over distance(mm)	ulitmate short circuit breaking capacity(kA)	Servies short circuit breaking capacity(kA)
NB-CM1-63L	(6),10,16,		500V		0	25	18
NB-CM1-63M	40：50：63		500V		0	50	35
NB-CM1-100L	(10),16,20, 25,32,40, 50,63,80 100				0(<50)	35	22
NB-CM1-100M					0(<50)	50	35
NB-CM1-100H					0(<50)	85	50
NB-CM1-225L	100,125, 160,180,				<50	35	22
NB-CM1-225M	100,125, 160,180,	3,4	800V	400V	<50	50	35
NB-CM1-225H					<50	85	50
NB-CM1-400L	225,250, 315,350, 400				<50	50	35
NB-CM1-400M	225,250, 315,350, 400				<100	65	42
NB-CM1-630L	400				<100	50	35
NB-CM1-630M	500				<100	65	42
NB-CM1-630H	630				<100	100	65
NB-CM1-800M	630,700,				<100	75	50
NB-CM1-800H	800				<100	100	65