(0) Shopping cart
You have no items in your shopping cart.
Shopping Categories

    125A DC Reversing Contactor, 2 pole, 12V/24V/48V

    5 out of 5 based on 4 reviews | Write a review
    Excellent conductivity reversing contacor is designed for demanding forward/reverse control of the motors. 2 pole DC contactor with 12V/24V/48V coil, 2NO and 2NC contact form, and is available with two optional auxiliary contacts.
    Availability: In stock
    Free Shipping Worldwide
    Delivery date: 2-12 days

    ATO ADC125 reversing contactor is used to change the direction of rotation in alternating current motors, start them gently and to monitor their load. It is widely used in auto electric winch, telecommunication equiment, engineering machinery and other electric control system.


    • 125 amps rated load current of contact circuit.
    • 2 pole, DPST-NO, DPST-NC contact form.
    • 12V, 24V, 48V DC coil rated voltage for selection.
    • Main contact voltage drop at 100A, not above 100mV.
    • Mechanical life up to 300 thousand times.


    Basics Model ATO-ADC125
    Body Size 105*53*94 mm
    Weight 1030 g
    Technical Parameters Coil Rated Voltage 12V/24V/48V
    Rated Load Voltage 12~60V DC
    Contact Circuit Rated Load Current 125 A
    Contact Form 2NO and 2NC
    Starting Current ≤4 A
    Overload Current ≤7 le
    Coil Power ≤12 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 Environmental Protection IP 50
    Operating Temperature -25℃~55℃
    Operating Humidity 5~95% RH

    DC Reversing Contactor Circuit Diagram (Unit: mm)

    dc reversing contactor circuit diagramInstallation Diagram
    dc reversing contactor 125a dimensionTips: How to select a DC contactor?

    1. The DC contactor shall be selected in accordance with the type of load current and degree of load, namely whether it's the AC load or DC load, the light load, general load or heavy load.
    2. Rated current of the main contact of a DC contactor should be greater than or equal to the current of load circuit. If the motor controlled by DC contactor starts, brakes or reverses frequently, the rated current of the contactor's main contact shall be generally degraded by one in its application.
    3. Rated voltage of the main contact refers to the rated voltage that the main contact can bear according to the value marked on the label, it doesn't refer to the voltage of sucking coil. When using, the rated voltage of the contactor's main contact should be greater than or equal to the rated voltage of the load.
    4. Selection of operation frequency. Operation frequency refers to the times the contactor connects and disconnects every hour. When the on-off current is large or the on-off frequency is too high, the contact will be seriously overheated, even suffer from fusion welding. In case the operation frequency exceeds the specified value, please select a DC contactor that has a higher level rated current.
    5. Selection of the coil's rated voltage. Rated voltage of the coil may not be necessarily equal to that of the main contact. When the circuit is simple and less appliances are used, please select a 380V or 220V voltage directly. If the circuit is complex and the appliances shall be used for more than 5 hours, a coil with a voltage at 24V, 48V or 110V can be selected.

    DC Reversing Contactor for DC Motor Forward/Reverse Control
    The reversing type of DC contactor has been designed for direct current loads, particularly motors as used on electric vehicles such as industrial trucks. In this video, ATO will show you how to use a DC reversing contactor for the DC motor forward and reverse control.

    Existing reviews of 125A DC Reversing Contactor, 2 pole, 12V/24V/48V
    Awesome DC reversing contactor, have ordered this kind of products many times from ATO
    Awesome DC reversing contactor, use it with a rocker switch to control reversible motors, winches, etc.. I have ordered this kind of products many times from ATO.
    From: Tom Rosser | Date: 06/07/2018
    Was this review helpful? Yes No (0/0)
    This 125A DC reversing contactor simple to install and worked well for me
    I needed a reversing contactor that would handle at least 60 amps for a DC motor on a RV landing gear... This 125A DC reversing contactor was a better option as its rated at a much higher level and should last the life of the RV instead of that my tiny switch with the existing 40 amp load...Very simple to install and worked well for me.
    From: Rafael | Date: 30/08/2018
    Was this review helpful? Yes No (0/0)
    Excellent product and makes it easy to purchase
    Purchased this unit (125 amps dc reversing contactor, 24v) to replace the old one and it worked like a charm. Excellent product and makes it easy to purchase.
    From: George Dronick | Date: 15/11/2018
    Was this review helpful? Yes No (0/0)
    Would buy the DC reversing contactor again
    I used this 12V 125A DC reversing contactor to replace the relay on my Warn 12000 Series Industrial winch. Easy to install and works great. I'm so impressed with this one and going to order another one for my Powerstroke.
    From: Edwin | Date: 26/09/2020
    Was this review helpful? Yes No (0/0)
    Write your review for 125A DC Reversing Contactor, 2 pole, 12V/24V/48V
    • Only registered users can write reviews
    • Bad
    • Excellent
    Customers who bought this item also bought

    2 Position 20A Rotary Switch, 4 Pole

    SKU: ATO-LW26GS20
    Selector switch 2 position for sale, 20 amp samll rotary cam switch, 4 pole, rated voltage 440V, mainly applied to AC 50 Hz, rotary switch is ideal for power switches in power lines, rotary selector switch design, easy to control, easy to install square plate.

    200A DC Reversing Contactor, 2 pole, 12V/24V/48V

    Contact circuit rated current 200 amps, 2 pole DC contactor with 12V/24V/48V coil for choice, DPST-NO, DPST-NC contact form, two interlocked contacts are designed to prevent the motor from running forwards and backwards simultaneously.