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    200A Engine Starter Relay, 12V/24V DC

    ATO engine starter relay is an electrical component in a vehicle's starting system that plays a crucial role in initiating the car engine's ignition process. This auto starter relay comes with 200A contact current, 12V DC and 24V DC coil rated voltage available, best for preventing excessive wear on the ignition switch and ensuring reliable engine starting.
    SKU: ATO-ESR-200
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    The automotive starter relay's primary function is to act as a switch that controls the high current needed to activate the starter motor. Engine starter relays are typically located in the engine compartment or fuse box, where they are easily accessible for maintenance or replacement when necessary.


    Model ATO3050692-12/24VDC-1H
    Coil Parameter Rated Coil Voltage 12V DC 24V DC
    Coil Resistance (8W/10W) 18Ω 55Ω
    Operate Voltage (Max.) 6~8V DC 12~16.8V DC
    Release Voltage (Min.) 1.2~3.6V DC 2.4~7.2V DC
    Applicable Voltage (Max.) 15V DC 30V DC
    Operation Condition Insulation Resistance 100MΩ Min. (at 500V DC)
    Dielectric Strength Between Contacts 500V AC (for one minute/sec)
    Between Coil and Contacts 750V AC (for one minute/sec)
    Shock Resistance Operating Extremes 10g
    Damage Limits 20g
    Vibration Resistance 10~55Hz 1.5mm
    Release Time 7ms
    Operate Time 5ms
    Ambient Temperature -30℃~+80℃
    Relative Humidity 40~85%
    Safety Standard CCEE Certification
    Contact Parameter Contact Form 1H (1A)
    Contact Material AgSnO12
    Contact Rating (Resistance) NO: 200A 14V DC
    Max. Switching Voltage 75V DC
    Max. Switching Current 200A
    Max. Switching Power 2800W
    Contact Resistance 100mΩ Max. at 6V DC 1A
    Electrical Life 100000 Operations (at 30 Operations/Minute)
    Mechanical Life 10000000 Operations (at 30 Operations/Minute)

    Dimension (Unit: mm)

    200A engine starter relay dimension

    Tips: How to tell if there is a problem with the car starter relay or the starter motor?

    To tell if there is a problem with the auto starter relay or the starter motor, you can refer to the following steps:

    1. Listen to the sound: When starting the car, if you hear a "click" sound but the engine does not turn, there may be a problem with the automotive starter relay. If there is no sound or only a slight clicking sound, it may be a problem with the starter motor.
    2. Check the battery: Make sure the battery is fully charged. If the battery is low, it may cause both the engine starter relay and the starter motor to not work properly.
    3. Voltage test: Use a multimeter to test the voltage of the starter relay and the starter motor. If the starter relay receives voltage but the starter motor does not turn, the problem may be in the starter motor. If the starter relay does not receive voltage, there may be a problem with the relay itself or the circuit.
    4. Check the connection wires: Check whether the connection wires between the battery, the starter relay, and the starter motor are loose or corroded.
    5. Replace the relay: Try replacing the starter relay to see if the problem is solved. If the problem persists after the replacement, it may be a problem with the starter motor.
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