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    Monday, August 4, 2025 3:20:11 PM

    Looking for a Contactor to Control 120VAC 3-Phase Motor

    3 months ago
    #426 Quote
    Hello everyone!
    I have a 48VDC control signal that I’d like to use as the coil voltage. I need to control a load of 120VAC at up to 13A. Is there a device with 3 ports that allows me to control a 120VAC, 13A three-phase motor, and use the 48VDC to turn it on and off? Thanks!
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    3 months ago
    #427 Quote
    Danie wrote:
    Hello everyone!
    I have a 48VDC control signal that I’d like to use as the coil voltage. I need to control a load of 120VAC at up to 13A. Is there a device with 3 ports that allows me to control a 120VAC, 13A three-phase motor, and use the 48VDC to turn it on and off? Thanks!

    It sounds like you're looking for an AC contactor with a 48VDC coil. That’s actually pretty common. Just make sure the main contacts are rated for 120VAC at 13A. Your load isn't too heavy—many small 3-pole contactors should work.
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    3 months ago
    #428 Quote
    Danie wrote:
    Hello everyone!
    I have a 48VDC control signal that I’d like to use as the coil voltage. I need to control a load of 120VAC at up to 13A. Is there a device with 3 ports that allows me to control a 120VAC, 13A three-phase motor, and use the 48VDC to turn it on and off? Thanks!

    This ATO-DCCON-18A DC contactor meets your application needs. It’s a 3-pole contactor, supports a 48VDC coil.
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    laisteel.com
    3 months ago
    #429 Quote
    ATO wrote:
    This ATO-DCCON-18A DC contactor meets your application needs. It’s a 3-pole contactor, supports a 48VDC coil.

    I’ve used ATO’s DC contactors before in automation projects. The 48VDC coil operates reliably and responds quickly. If you’re planning long-term operation, consider adding an RC snubber to help extend its lifespan.
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    3 months ago
    #430 Quote
    You could also consider a solid-state relay (SSR), but SSRs typically don’t handle motor loads well—especially if you're switching frequently. For your case, a mechanical contactor with a DC coil is a more robust choice.
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