MBM88 Moulded Case Circuit Breaker

 

Applications:
MBM88 series mould case circuit breaker,rated insulation voltage 800V,is suitable in electric network of AC 50Hz,rated operative voltage up to 690V,rated current front 6A to 1250A.It is normally used in power distribution,but also for electric motor protection.With the funcutin of protection against overload,short circuit and undervoltage…In normal conditions,used as unfrequent switch of circuit and start of electric motor.

Classufucation of MCCB:
Installation type of MCCB:MCCB are suitable for vertical or horizontal installation;
According to use of MCCB:Distribution circuit protection type,motor protection type;
According to connection way:Front panel connection,back panel connection,plug-in,draw out;
According to overload release type:Magnetic release(instantaneous),thermodynamic magnetic(dual),intelligent.

Specifications:

Rated frame current			63		100			225			400		630, 800			1250
Model			MBM88-63		MBM88-100			MBM88-225			MBM88-400		MBM88-630 MBM88-800			MBM88-1250
Rated current			6,10,16 20,25,32 40,50,63		16,20,25 32,40,50 63,80,100			100,125,140 160,180 200,225			200,250 315,350 400		400,500 630,700 800			630,700 800,1000 1250
Poles			2,3,4		2,3,4			2,3,4			3,4		3,4			3
Rated insulating current Ui			660		800			800			800		800			800
Rated operating voltage Ue			440		690			690			690		690			690
Operating times		on	6000		6000			2000			1000		500			500
		off	8500		8500			7000			4000		2500			2500
Breaking capacity grades			S	H	S	H	R	S	H	R	S	H	S	H	R	S	H
Rated ultimate short circuit breaking capacity lcu(kA)		690V	/	10	8	20	/	8	20	/	10	20	10	20	/	20	25
		400V	25	50	35	50	85	35	50	85	50	65	50	65	100	65	100
Rated operating short circuit breaking capacity lcs(kA)		690V	/	5	4	10	/	4	10	/	10	10	10	10	/	18	20
		400V	18	35	25	35	42.5	25	35	42.5	35	40	35	40	50	32.5	40
Outline dimensions	L		135	135	155	155(155)		165	165(165)		257(257)		275(275)			330
	W		76	76	90	90(120)		105	105(140)		140(183.5)		210(280)			210
	H		73.5	81.5	68	86(86)		86	103(103)		103(103)		103(103)			137
Installation dimensions	A		117		132			126			194		243			299
	B		25		30			35			44		70			70
	d		3.5		4.5			5			7		7			9

 

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