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    500A DC Contactor, single pole, 12V/24V/48V

    5 out of 5 based on 2 reviews | Write a review
    500A high current contactor with single pole, designed for direct current loads, IP 50 protection, good quality and long life. They are available with two optional auxiliary contacts, 2A/48V DC or 5A/24V DC.
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    12 volt, 24 volt, 48 volt contactor is a high current contactor for DC loads, 500A rated current, with one normal open contact, using for battery, rectification power supply, pump motor and other electronic vehicles.


    • 500 amps rated load current of contact circuit.
    • 12V, 24V, 48V DC coil rated voltage for selection.
    • The allowed range of coil voltage is ±20%.
    • 2A/48VDC and 5A/24VDC auxiliary contact rated load to choose.
    • Mechanical life up to 300 thousand times.
    Basics Model ATO-NR500
    Body Size 85*68*93 mm
    Weight 800 g
    Technical Parameters Coil Rated Voltage 12V/24V/48V
    Rated Load Voltage 12~72V DC
    Contact Circuit Rated Load Current 500 A
    Contact Form 1 NO
    Overload Current ≤7 le
    Coil Power ≤7.2 W
    Main Contact Voltage Drop at 100A Load ≤100 mV
    The Allowed Range of Coil Voltage ±20%
    Pull-In Time (N/O Contacts to Open) ≤30 ms
    Drop-Out Time (N/O Contact to Close) ≤20 ms
    Insulation Resistance ≥50 MΩ
    Dielectric Withstanding Voltage 50Hz/60Hz 1500VAC/Min
    Electric Life Continuous 20000 times
    Mechanical Life 300 thousand times
    Environment Operating Temperature -25℃~55℃
    Operating Humidity 5~95% RH
    International Protection IP 50

    Installation Diagram (Unit: mm)

    dc contactor 500a dimension

    Tips: What is a DC contactor?

    DC contactor is mainly used for remotely connecting and disconnecting the DC circuit, as well as frequently starting, stopping, reversing and plug braking the DC motors. It's also widely used for connecting and disconnecting the lifting electromagnet, solenoid valve, clutch's magnetic coils. DC contactor has two structure of stereoscopic arrangement and plane arrangement, some products are derived on the basis of AC contactor. Therefore, structure and working principle of the DC contactor are basically the same as that of AC contactor, which mainly consists of three parts, electromagnetic mechanism, contact system and arc-extinguishing equipment.

    Existing reviews of 500A DC Contactor, single pole, 12V/24V/48V
    12V dc contactor worked great
    Worked great. I installed the 12V dc contactor in a 2000 F350 7.3 diesel for the glow plug relay. Truck starts now no matter the outside temperature.
    From: Yosemite Sam | Date: 19/11/2020
    Was this review helpful? Yes No (0/0)
    Nice contactor, used it as a replacement in my 1997 Ford F-250
    Really nice contactor! I used this single pole contactor as a replacement glow plug relay (GPR) in my 1997 Ford F-250 (97 F250), it works better than the original one. Started in cold weather without any problem.
    From: Lathrop | Date: 29/06/2018
    Was this review helpful? Yes No (0/0)
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