Molded Case Circuit Breakers

Wide assortment of products that is highly suitable for protection against overload and short-circuit conditions.

These are basic products for the protection of low voltage circuits. The WS-V series, Mitsubishi's latest series of Low Voltage Circuit Breakers, offers a number of different versions, including "F-style" small size breakers, with improved usability.

Molded-Case Circuit Breakers (MCCB) NF

Molded-Case Circuit Breakers (MCCB)

The molded case circuit breaker (MCCB) opens and closes a low voltage circuit, and breaks the fault current (an overload current or short circuit current) automatically, to protect the wirings/conductors of the circuit.

Product Specification:

Type/series					WS-V series
Type/series					NF32-SV	NF63-SV	NF125-SV	NF125-SGV	NF125-SEV	NF160-SGV	NF250-SV	NF250-SGV	NF250-SEV
S series	Rated current I n max. [A]					32	63	125	125*	125*	160*	250	250*	250*
	Rated insulation voltage U i [V]				AC	600	600	690	690	690	690	690	690	690
	Number of poles					3	3/4	3/4	3/4	3/4	3/4	3/4	3/4	3/4
	Ratedbreakingcapacity[kA] ( I cu / I cs )	IEC 947-2 EN 60 947-2VDE 0660		AC a (50/60 Hz)	690 V	—	—	8/8	8/8	8/8	8/8	8/8	8/8	8/8
					500 V	2.5/2.5	7.5/7.5	18/18	30/30	30/30	30/30	30/30	30/30	30/30
					440 V	2.5/2.5	7.5/7.5	25/25	36/36	36/36	36/36	36/36	36/36	36/36
					400 V	5/5	7.5/7.5	30/30	36/36	36/36	36/36	36/36	36/36	36/36
					230 V	7.5/7.5	15/15	30/30	85/85	85/85	85/85	85/85	85/85	85/85
	Dimensions WxHxD				[mm]	75x130x68	75/100x130x68	90/120/x130x68	105/140x165x68	105/140x165x68	105/140x165x68	105/140x165x68	105/140x165x68	105/140x165x68
	Type							NF125-LGV			NF160-LGV		NF250-LGV
L series	Rated current I n max. [A]							125*			160*		250*
	Rated insulation voltage U i [V]				AC			690			690		690
	Number of poles							3/4			3/4		3/4
	Ratedbreakingcapacity[kA] ( I cu / I cs )	IEC 947-2 EN 60 947-2VDE 0660		AC a (50/60 Hz)	690 V			8/8			8/8		8/8
					500 V			36/36			36/36		36/36
					440 V			50/50			50/50		50/50
					400 V			50/50			50/50		50/50
					230 V			90/90			90/90		90/90
	Dimensions WxHxD				[mm]			105/140x165x68			105/140x165x68		105/140x165x68
	Type						NF63-HV	NF125-HGV		NF125-HEV	NF160-HGV		NF250-HGV	NF250-HEV
H series	Rated current I n max. [A]						63	125*		125*	160*		250*	250*
	Rated insulation voltage U i [V]				AC		690	690		690	690		690	690
	Number of poles						3/4	3/4		3/4	3/4		3/4	3/4
	Ratedbreakingcapacity[kA] ( I cu / I cs )	IEC 947-2 EN 60 947-2VDE 0660		AC a (50/60 Hz)	690 V		2.5/2.5	10/8		10/8	10/8		10/8	10/8
					500 V		7.5/7.5	50/38		50/38	50/38		50/50	50/50
					440 V		10/8	65/65		65/65	65/65		65/65	65/65
					400 V		10/8	75/75		75/75	75/75		75/75	75/75
					230 V		25/19	100/100		100/100	100/100		100/100	100/100
	Dimensions WxHxD				[mm]		75/100x130x68	105/140x165x68		105/140x165x68	105/140x165x68		105/140x165x68	105/140x165x68
	Type							NF125-RGV					NF250-RGV
R series	Rated current I n max. [A]							125*					250*
	Rated insulation voltage U i [V]				AC			690					690
	Number of poles							3					3
	Ratedbreakingcapacity[kA] ( I cu / I cs )	IEC 947-2 EN 60 947-2VDE 0660		AC a (50/60 Hz)	690 V			—					—
					500 V			—					—
					440 V			125/125					125/125
					400 V			150/150					150/150
					230 V			150/150					150/150
	Dimensions WxHxD				[mm]			105x165x68					105x165x68
	Type							NF125-UV					NF250-UV
U series	Rated current I n max. [A]							125					250
	Rated insulation voltage U i [V]				AC			690					690
	Number of poles							3/4					3/4
	Ratedbreakingcapacity[kA] ( I cu / I cs )	IEC 947-2 EN 60 947-2VDE 0660		AC a (50/60 Hz)	690 V			10/10					15/15
					500 V			200/200					200/200
					440 V			200/200					200/200
					400 V			200/200					200/200
					230 V			200/200					200/200
	Dimensions WxHxD				[mm]			105/140x240x68					105/140x240x68
	Type					DSN32-SV	DSN63-SV	DSN125-SGV			DSN160-SGV		DSN250-SGV
Disconnectors	Rated current I n max. [A]					32	63	125			160		250
	Rated insulation voltage U i [V]				AC/DC	600	600	690			690		690
	Rated voltage U e[V]		AC (50/60 Hz)/DC			500/250	500/250	690/300			690/300		690/300
	Number of poles					3	3/4	3/4			3/4		3/4
	Max. switching current [A] (breaking)				AC/DC	256/128	504/252	1000/500			1280/640		2000/1000
	Dimensions WxHxD				[mm]	75x130x68	75/120x130x68	105/140x165x68			105/140x165x68		105/140x165x68

a DC on request b In case of solderless terminal, interrupting capacity reduces. * adjustable

Type/series						WS series
						NF400-SEW	NF630-SEW	NF800-SEW	NF1000-SEW	NF1250-SEW	NF1600-SEW
S series	Rated current I n max. [A]					400*	630*	800*	1000*	1250*	1600*
	Rated insulation voltage U i [V]				AC	690	690	690	690	690	690
	Number of poles					3/4	3/4	3/4	3/4	3/4	3/4
	Rated breakingcapacity [kA] ( I cu / I cs )	IEC 947-2 EN 60 947-2 VDE 0660		AC a (50/60 Hz)	690 V	10/10 b	10/10	10/10	25/13	25/13	25/13
					500 V	30/30 b	30/30	30/30	65/33	65/33	65/33
					440 V	42/42 b	42/42	42/42	85/43	85/43	85/43
					400 V	50/50 b	50/50	50/50	85/43	85/43	85/43
					230 V	85/85 b	85/85	85/85	125/63	125/63	125/63
	Dimensions WxHxD				[mm]	140/185x257x103	140/185x257x103	210/280x275x103	210/280x406x140	210/280x406x140	210/280x406x140
	Type					NF400-HEW	NF630-HEW	NF800-HEW
H series	Rated current I n max. [A]					400*	630*	800*
	Rated insulation voltage U i [V]				AC	690	690	690
	Number of poles					3/4	3/4	3/4
	Rated breakingcapacity [kA] ( I cu / I cs )	IEC 947-2 EN 60 947-2 VDE 0660		AC a (50/60 Hz)	690 V	10/10	15/15	15/15
					500 V	50/50	50/50	50/50
					440 V	65/65	65/65	65/65
					400 V	70/70	70/70	70/70
					230 V	100/100	100/100	100/100
	Dimensions WxHxD				[mm]	140/185x257x103	140/185x257x103	210/280x275x103
	Type					NF400-REW	NF630-REW	NF800-REW
R series	Rated current I n max. [A]					400*	630*	800*
	Rated insulation voltage U i [V]				AC	690	690	690
	Number of poles					3	3	3
	Rated breakingcapacity [kA] ( I cu / I cs )	IEC 947-2 EN 60 947-2 VDE 0660		AC a (50/60 Hz)	690 V	15/10	20/15	20/15
					500 V	70/35	70/35	70/35
					440 V	125/63	125/63	125/63
					400 V	125/63	125/63	125/63
					230 V	150/75	150/75	150/75
	Dimensions WxHxD				[mm]	140x257x103	140x257x103	210x275x103
	Type					NF400-UEW		NF800-UEW
U series	Rated current I n max. [A]					400*		800*
	Rated insulation voltage U i [V]				AC	690		690
	Number of poles					3/4		3/4
	Rated breakingcapacity [kA] ( I cu / I cs )	IEC 947-2 EN 60 947-2 VDE 0660		AC a (50/60 Hz)	690 V	35/35		35/35
					500 V	170/170		170/170
					440 V	200/200		200/200
					400 V	200/200		200/200
					230 V	200/200		200/200
	Dimensions WxHxD				[mm]	140/280x297/322x200		210/280x322x200
	Type					DSN400-SW	DSN630-SW	DSN800-SW	DSN1000-SW	DSN1250-SW	DSN1600-SW
Disconnectors	Rated current I n max. [A]					400	630	800	1000	1250	1600
	Rated insulation voltage U i [V]				AC/DC	690	690	690	660	660	660
	Rated voltage U e [V]		AC (50/60 Hz)/DC			690/250	690/250	690/250	660/250	660/250	660/250
	Number of poles					3/4	3/4	3/4	3/4	3/4	3/4
	Max. switching current [A] (breaking)				AC/DC	3200/1600	5040/2520	6400/3200	8000/14000	10000/5000	12800/6400
	Dimensions WxHxD				[mm]	140/185x257x103	140/185x257x103	210/280x275x103	210/280x406x140	210/280x406x140	210/280x406x140

* adjustable