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

    50A DC Contactor, single pole, 12V/24V/48V

    5 out of 5 based on 1 reviews | Write a review
    Single pole DC contactor with 12V, 24V, 48V coil voltage for choice, normally open type (SPST-NO), contact circuit rated load current of 50A, offers exceptional performance in an extremely small and lightweight device.
    Availability: In stock
    30-day Returns
    Free Shipping
    Delivery date: 2-12 days

    50A DC contactor has one normal open contact, has been designed for direct current loads, particularly for electric vehicle, telecommunication equiment, car batteries, trains, ships, electronic control system.


    • 50 amps rated load current of contact circuit.
    • 12V, 24V, 48V DC coil rated voltage for selection.
    • Continuous operation duty.
    • Easy and quick installation, available any way to install.
    • Mechanical life up to 300 thousand times.


    Basics Model ATO-AZJ50
    Body Size 56*38*57 mm
    Weight 180 g
    Technical Parameters Coil Rated Voltage 12V/24V/48V
    Rated Load Voltage 12~72V DC
    Contact Circuit Rated Load Current 50 A
    Contact Form 1 NO
    Overload Current ≤7 le
    Coil Power ≤5.5 W
    Main contact voltage drop at 100A ≤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
    Auxiliary Contact Rated Load (Option) 2A/48VDC, 5A/24VDC
    Electric Life Continuous 30000 times
    Mechanical Life 300 thousand times
    Environment Operating Temperature -25℃~55℃
    Operating Humidity 5~95% RH
    International Protection IP 50

    DC Contactor Circuit Diagram
    50A dc contactor circuit diagramInstallation Diagram (Unit: mm)

    50a dc contactor dimension

    Tips: Different Functions between contactor and relay

    Primary function of a relay is to detect, transmit, convert or dispose the signal, it's on-off current is generally small. The relay is usually used in a control circuit to control the weak signal.
    Primary function of a contactor is to connect or disconnect the main circuit. The main circuit refers to the one whose working situation is determined by the connection of this circuit. The concept of main circuit corresponds to the control circuit, generally, the current of a main circuit is larger than that of a control circuit.
    In general, a contactor with large capacity is equipped with an arc chute. The contact capacity of a relay will not exceed 5A, that of a midget relay may be 1A or 2A. However, the minimum contact capacity of a contactor could be 9A. Contacts of the contactor usually have three pairs of main contacts (the main contacts are normally open contacts), it also has several pairs of auxiliary contacts.
    However, contacts of a relay is generally not divided into main contacts or auxiliary contacts. Sometimes, contacts of a relay are set in pairs, namely the normally open contacts and normally closed contacts are combined, while that of a contactor are not in pairs. As for specific needs, the relay will combine with other equipment into a time relay, a counter or a pressure relay, which has the additional functions, but a contactor doesn't have.

    Existing reviews of 50A DC Contactor, single pole, 12V/24V/48V
    Good contactor, Fast delivery
    Thank you for delivering in time. I am very satisfied with this 50A 24V DC contactor as well as the customer service.
    From: Ricky | Date: 13/06/2018
    Was this review helpful? Yes No (0/0)
    Load more reviews...
    Write your review for 50A DC Contactor, single pole, 12V/24V/48V
    • Only registered users can write reviews
    • Bad
    • Excellent
    Customers who bought this item also bought

    100A DC Contactor, single pole, 12V/24V/48V

    High performance 100A DC contactor with one normally open contact, and available with two optional auxiliary contacts. Coil rated voltage with 12V/24V/48V for selection, main contact voltage drop at 100A, not above 100mV.