WashiON KYORITSU KEIKI MDM Series DC Contactor

Manufacturer: WashiON KYORITSU KEIKI
Model: MDM Series

Features

A wide variety of models from which you can select one best suited to your application.
Environment-friendly contacts free of cadmium and the arc chute made of non-asbestos material.
Contacts of special silver alloy showing high resistance to wear or fusion.
Blow-out coil arc-extinguishing system (magnetic arc-extinguishing system) employed.
Auxiliary contacts of 2a2b provided and twin contact structure assuring stable contact.

Rated voltage		25 type				50 type								100 type		200 type		400 type
Rated voltage	Insulation	DC250V				DC750V
Rated voltage	Operation	DC220V				DC440V
Main contact arrangement		1A, 2A		1B		1A, 2A				1B				1A	1B	1A	1B	1A
Blow-out coil rated current (capacity)	Continuous	5A	25A	5A	25A	5A	10A	25A	50A	5A	10A	25A	50A	100A	100A	200	200	400
Blow-out coil rated current (capacity)	1H	6A	30A	6A	30A	6A	12A	30A	60A	6A	12A	30A	60A	120A	120A	240	240	480
Make/Break current capacity (L/R)	15ms	20A	100A	–	–	20A	40A	100A	200A	–	–	–	–	400A	–	800	–	1600
Make/Break current capacity (L/R)	1ms	–	–	5A	25A	–	–	–	–	5A	10A	25A	50A	–	100A	–	200	–
Coil resistance (initial state)	100	555				500								400		285		312
	110	672				605								484		345		378
	200	2222				2000								1600		1143		1250
	220	2688				2420								1936		1382		1512
Coil resistance (initial state)		18W				20W								25W		35W		32W
Coil resistance (initial state)	100	1.2				2.5								3.3		7.0		12.0
	100	1.4				3.3								–		–		–
	100	1.3				2.6								3.5		7.2		–
Performance	Standard	JEM1038
	Switching frequency	No. 1 ( 1200 times/ hour)
	Mechanical life	Calss 1 ( 5 million times)
	Electrical life	Class 2 ( 250,000 times)
Insulation resistance		5MΩ or above (DC500V megger)				5MΩ or above (DC1000V megger)
Withstand voltage (1 min,50/60 Hz)	Main Circuit	AC2000V				AC3000V
Withstand voltage (1 min,50/60 Hz)	Control Circuit	AC1500V
Auxiliary contact	Contact arrangement	1a1b, one unit
Auxiliary contact	Performance	L/R =50ms DC110V1.0A DC220V0.5A

Install the DC contactor as indicated below. (Attach the mounting base on a vertical surface, and install the contactor with the arc-extinguishing part up.)
The MDM series contactor can be mounted directly on a metallic surface, but it is advised that it is separated from the metallic body as far as practicable.
Be sure to provide sufficient arc space.
Coil terminals and auxiliary contact terminals are all M4.
Tighten up the specified number of screws.

Dimension	Overall			Mounting					Arc Spacing			Terminal diam
Model	A	B	C	D	E	F	G	H	I	J	K	L
MDM25-A	74	140	105	21	13	120	14	6	42	25	140	M4
MDM50-A	90	194	180	42	22	150	15	7	64	81	270	M6
MDM100-A	90	200	190	42	22	150	22	7	64	175	340	M8
MDM200-A	125	270	220	25	38	200	12	9	100	180	365	M10
MDM400-A	135	320	235	50	50	200	13	9	125	180	420	M12

Dimension	Overall			Mounting					Arc Spacing			Terminal diam
Model	A	B	C	D	E	F	G	H	I	J	K	L
MDM25-D	106	138	105	10	0	110	16	6	75	35	140	M4
MDM50-D	145	189	180	42	22	150	10	7	145	81	270	M6

Dimension	Overall			Mounting					Arc Spacing			Terminal diam
Model	A	B	C	D	E	F	G	H	I	J	K	L
MDM25-B	76	172	106	14	14	160	6	6	42	25	140	M4
MDM50-B	95	200	180	42	22	150	15	7	64	81	270	M6
MDM100-B	95	210	190	42	22	150	32	7	64	175	340	M8
MDM200-B	125	318	220	25	38	250	12	9	100	180	365	M10