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    20 amp 2/4 pole Lighting Contactor, 24V/110V/220V Coil

    5 out of 5 based on 6 reviews | Write a review
    20 amp lighting contactor for sale online. 2 pole and 4 pole ac contactors are available, coil voltage 12V/24V/110/220 modular contactor with rail type has 100,000 cycles, optional auxiliary contacts, low noise and extra long life, provides reliable and convenient lighting control, used in large-scale industrial and commercial.
    SKU: ATO-LCON-20
    30-day Returns
    Free Shipping
    Delivery date: 10-20 days

    Popular 20 amp Lighting contactor with optional auxiliary contacts, 2 pole contactor or 4 pole is available with 100,000 cycles and 12V/24V/110/220 coil voltage, used to control lighting system, suitable for home, large-scale industrial and commercial.


    Model ATO-WCT-20
    Power Circuit
    Voltage rating (Ue) 2P 250V AC
    4P 400V AC
    Frequency 50Hz or 60Hz
    Endurance (O-C)
    Electrical 100,000 cycles
    Maximum number of switching operation a day 100
    Additional Characteristics
    Insulation voltage (Ui) 500V AC
    Pollution degree 2
    Rated impulse withstand voltage (Uimp) 2.5kv (4 kV for 12/24/48V AC)
    Degree of protection
    (IEC 60529)
    Device only IP20
    Device in modular enclosure IP40
    Operating temperature -5℃ to 60+℃
    Storage temperature -40℃ to 70+℃
    Tropicalization ( IEC 60068-1) Treatment 2 ( relative humidity 95% at 55℃ )
    ELSV compliance (Extra Low Safety Voltage) for 12/24/48 V AC versions
    The product control conforms to the SELV (Safety Extra Low Voltage) requirements

    Lighting Contactor Wiring Test: Demonstrating Operation

    A lighting contactor is an electrical device used to control the operation of lighting systems, typically in commercial or industrial settings. It is designed to handle the high current demands of lighting circuits and provide a convenient way to switch multiple lighting loads on and off. The video will conduct a wiring test of the lighting contactor to demonstrate its operational principles.

    Note: In the case of contactor mounting in an enclosure for which the interior temperature is in range between 50℃ and 60°℃, it is necessary to use a spacer, between each contactor.


    Type Raring (In) Control Voltage
    (V AC) (50Hz)
    Consumption Max Power
    AC7a AC7b Holding Inrush
    2P 20A 6.4A 230-240 2.7VA 9.2VA 1.2W
    4P 220-240 4.6VA 34VA 1.6W

    Contact Type Diagram

     2NO 1NO+2NC 2NO contact type diagram4NC 2N0+2NC 4NO 3NO+1NC contact type diagram

    Dimension (Unit: mm)

    Lighting Contactor Dimension


    20 amp Lighting Contactor Details

    Tips: Working Principle of the Contactor

    When the contactor coil is energized, the coil current will generate a magnetic field. The generated magnetic field causes the static iron core to generate electromagnetic attraction to attract the moving iron core and drive the AC contactor point to move. The normally closed contact is disconnected and the normally open contact is closed. The two are linked. When the coil is de-energized, the electromagnetic attraction force disappears, and the armature is released under the action of the released spring so that the contact is restored, the normally open contact is disconnected, and the normally closed contact is closed.

    Existing reviews of 20 amp 2/4 pole Lighting Contactor, 24V/110V/220V Coil
    I just received the lighting relay
    I just received the lighting relay and I have a few questions: the coil says 50hz and in the USA we are 60hz, is that a problem?  where are the no aux switches?  what are the Auto and P positions on the relay?  Please explain.
    From: Carter | Date: 27/11/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, we confirm that this unit can also run at 60HZ, this auxiliary contact no is mounted on the side of the contactor (similar to the attached picture).
    Affordable 20 amp lighting contactor
    The price of this 20 amp lighting contactor is very reasonable, and it is the lighting contactor with good price and high quality that I have ever bought. The low noise is one of my favorite things. I'll order more.
    From: Beahn | Date: 18/07/2022
    Was this review helpful? Yes No (0/0)
    Easy to install
    This unit does what I need, I only use 4 ports, I don't need the rest. It would be great to opt for a simpler unit, and probably a little less expensive. Still, I think it's awesome!
    From: Steyn | Date: 07/05/2022
    Was this review helpful? Yes No (0/0)
    Good AC contactor
    It is an AC contactor and a good device for the lighting system. It's easy to install and works well. I recommend it!
    From: Brian | Date: 25/04/2022
    Was this review helpful? Yes No (0/0)
    No more problems or issues
    It is a high-quality lighting contactor with 20 amp. Arrive in a short time and perfect as described. No more problems or issues.
    From: Couchman | Date: 25/04/2022
    Was this review helpful? Yes No (0/0)
    Easy to install
    This unit is very well made at an affordable price, working perfectly so far,met my purpose. I used this relay for the water heater project. Nonetheless it worked for my application.
    From: wjl | Date: 21/04/2022
    Was this review helpful? Yes No (0/0)
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