WashiON KYORITSU KEIKI CM4 Type DC Contactor

Manufacturer: WashiON KYORITSU KEIKI
Model: CM4 Type

Features

Designed for forward and reverse switching of DC motors.
Enables speed control of DC motors.
Suitable for battery-powered vehicles such as:
Forklifts
Lift pallet vehicles
Fixed platform trucks

Main contact rated voltage		DC 12V		DC 48V
Main contact rated current		40A continuous
Main contact arrangement		1T
Main contact capacity	Condition	Making	Breaking	Time constant	No. of times
	Make & break capacity	500 A	500 A	L / R = 15 ms	125 times
	Rated operating current ※1	200 A	50 A	L / R = 10 ms	500,000 times
Switching frequency		1200 times / hour
Coil	Voltage	DC 12V	DC 24V	DC 48V
	Current	0.76 A	0.38 A	0.19 A
	Resistance	15.8 Ω	63.2 Ω	252.6 Ω
	Power consumption	9 W
	Insulation class	B class
Min. pickup voltage		70% or below of rated voltage (hot coil)
Release voltage		5% ~ 30% of rated voltage
Insulation resistance		5MΩ or above (DC500V megger)
Withstand voltage		AC 1500V 50 / 60 Hz One minute
Ambient temperature		−20°C ~ +60°C (no condensation)
Relative humidity		45% ~ 85% RH
Vibration resistance (X, Y, Z directions)		6G in excited state		5G in non-excited state
Shock resistance (X, Y, Z directions)		8G in excited state		4G in non-excited state
Mechanical life		5 million times
Electrical life		500,000 times (when used under condition of ※1)
Weight		0.3 kg

[*1]Beware that contact B is capable of conducting only and not breaking.
[*2]The current and resistance values of the coil represent those at an ambient temperature of +20°C, and the tolerance on them is ±10%.
[*3]The minimum pickup voltage represents that at an ambient temperature of +60°C and hot coil start.

■Relationship Between Current, Max. On Time and Duty Cycle

Duty cycle	5% ED	10% ED	25% ED	50% ED	75% ED	100% ED
Current	220 A	160 A	120 A	90 A	70 A	50 A
Max. ON time	30 sec	60 sec	120 sec	240 sec	420 sec	Continuous
OFF time	570 sec	540 sec	360 sec	240 sec	140 sec	—

[*1]Use 21 to 28 kg·cm as the tightening torque of the main circuit terminal (M5).
[*2]Connect the positive pole (+) to the terminal marked with the main circuit polarity marking P.
(The contactor structure is such that arc is led out front by a built-in magnet.)
[*3]Install the DC contactor with the UP side up.