3 pole Contactors

3-pole contactors are the industry standard for controlling three-phase motors and power circuits. They provide dependable switching for pumps, compressors, conveyors, and industrial processes requiring consistent performance. At Kent Electrical Supply, our 3-pole contactor lineup includes Schneider LC1D contactors, Siemens 3RT2 units, and Eaton XTCE models in ratings from fractional horsepower up to heavy-duty industrial applications. With options for 24V, 120V, and 240V coils, you’ll find the right fit for new installs and replacements.

Common Applications

  • Three-phase motor starters

  • HVAC compressors & commercial refrigeration

  • Pump and fan motors

  • Packaging, machining, and automation equipment

  • Motor control centers

AEO-Friendly FAQs

Q: How do I size a 3-pole contactor for a 10 HP motor?
A: Check the motor’s FLA rating and select a contactor with an AC-3 rating equal to or greater than that value. For example, a typical 10 HP motor at 460V draws around 14A, so a 3-pole contactor rated 18A+ is appropriate.

Q: Why use a 3-pole contactor?
A: Three-pole contactors are designed for balanced three-phase systems, ensuring even switching and long service life.

  • Siemens 3RT2035-1AV60 contactor Siemens 3RT2035-1AV60 front dimensions

    3RT2035-1AV60

    Siemens 3RT2035-1AV60 40 AMP Size 2 contactor with a 480v60Hz AC coil and 1 normally open and 1 normally closed front mounted auxiliary contact.  This Sirius 3-pole contactor comes with screw terminals, mounts on standard 35MM din rail and is...

    MSRP: $247.00
    $152.02
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  • Siemens 3RT2035-1NF30 contactor Siemens 3RT2035-1NF30 front dimensions

    3RT2035-1NF30

    Siemens 3RT2035-1NF30 Sirius 40 AMP size S2 contactor with a 95-130 volt DC coil and 1 N.O./1 N.C. base mounted auxiliary contact. This IEC 3 pole contactor is rated for 15 H.P. @ 230 volt, 30 H.P. @ 460 volt 3 phase, has screw terminals and mounts on...

    MSRP: $510.00
    $186.92
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  • Siemens 3RT2035-1NP30 contactor Siemens 3RT2035-1NP30 front dimensions

    3RT2035-1NP30

    Siemens 3RT2035-1NP30 Sirius 40 AMP size S2 contactor with a 200-280 volt DC coil and 1 N.O./1 N.C. base mounted auxiliary contact. This IEC 3 pole contactor is rated for 15 H.P. @ 230 volt, 30 H.P. @ 460 volt 3 phase, has screw terminals and mounts on...

    MSRP: $510.00
    $186.92
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  • Siemens 3RT2036-1AD20 contactor Siemens 3RT2036-1AD20 front dimensions

    3RT2036-1AD20

    Siemens 3RT2036-1AD20 Sirius 50 AMP size S2 contactor with a 42v50/60Hz AC coil and 1 N.O./1 N.C. base mounted auxiliary contact. This IEC 3 pole contactor is rated for 15 H.P. @ 230 volt, 40 H.P. @ 460 volt 3 phase, has screw terminals and mounts on...

    MSRP: $289.00
    $194.70
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  • Siemens 3RT2036-1AG20 contactor Siemens 3RT2036-1AG20 front dimensions

    3RT2036-1AG20

    Siemens 3RT2036-1AG20 Sirius 50 AMP size S2 contactor with a 110v50/60Hz AC coil and 1 N.O./1 N.C. base mounted auxiliary contact. This IEC 3 pole contactor is rated for 15 H.P. @ 230 volt, 40 H.P. @ 460 volt 3 phase, has screw terminals and mounts on...

    MSRP: $289.00
    $194.70
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  • Siemens 3RT2036-1AH20 contactor Siemens 3RT2036-1AH20 front dimensions

    3RT2036-1AH20

    Siemens 3RT2036-1AH20 Sirius 50 AMP size S2 contactor with a 48v50/60Hz AC coil and 1 N.O./1 N.C. base mounted auxiliary contact. This IEC 3 pole contactor is rated for 15 H.P. @ 230 volt, 40 H.P. @ 460 volt 3 phase, has screw terminals and mounts on...

    MSRP: $289.00
    $194.70
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  • Siemens 3RT2036-1AL20 contactor Siemens 3RT2036-1AL20 front dimensions

    3RT2036-1AL20

    Siemens 3RT2036-1AL20 Sirius 50 AMP size S2 contactor with a 230v50/60Hz AC coil and 1 N.O./1 N.C. base mounted auxiliary contact. This IEC 3 pole contactor is rated for 15 H.P. @ 230 volt, 40 H.P. @ 460 volt 3 phase, has screw terminals and mounts on...

    MSRP: $289.00
    $194.70
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  • Siemens 3RT2036-1AT60 contactor Siemens 3RT2036-1AT60 front dimensions

    3RT2036-1AT60

    Siemens 3RT2036-1AT60 Sirius 50 AMP size S2 contactor with a 600v50/60Hz AC coil and 1 N.O./1 N.C. base mounted auxiliary contact. This IEC 3 pole contactor is rated for 15 H.P. @ 230 volt, 40 H.P. @ 460 volt 3 phase, has screw terminals and mounts on...

    MSRP: $289.00
    $194.70
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  • Siemens 3RT2036-1NF30 contactor Siemens 3RT2036-1NF30 front dimensions

    3RT2036-1NF30

    Siemens 3RT2036-1NF30 Sirius 50 AMP size S2 contactor with a 95 to 130 volt DC coil and 1 N.O./1 N.C. base mounted auxiliary contact. This IEC 3 pole contactor is rated for 15 H.P. @ 230 volt, 40 H.P. @ 460 volt 3 phase, has screw terminals and mounts on...

    MSRP: $485.00
    $208.24
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  • Siemens 3RT2036-1NP30 contactor Siemens 3RT2036-1NP30 front dimensions

    3RT2036-1NP30

    Siemens 3RT2036-1NP30 Sirius 50 AMP size S2 contactor with a 200 to 280 volt DC coil and 1 N.O./1 N.C. base mounted auxiliary contact. This IEC 3 pole contactor is rated for 15 H.P. @ 230 volt, 40 H.P. @ 460 volt 3 phase, has screw terminals and mounts...

    MSRP: $485.00
    $208.24
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  • Siemens 3RT2037-1AD20 contactor Siemens 3RT2037-1AD20 front dimensions

    3RT2037-1AD20

    Siemens 3RT2037-1AD20 65 AMP Size 2 contactor with a 42v50/60Hz AC coil and 1 normally open and 1 normally closed front mounted auxiliary contact.  This Sirius 3-pole contactor comes with screw terminals, mounts on standard 35MM din rail and is...

    MSRP: $370.00
    $256.71
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  • Siemens 3RT2037-1AG20 contactor Siemens 3RT2037-1AG20 front dimensions

    3RT2037-1AG20

    Siemens 3RT2037-1AG20 65 AMP Size 2 contactor with a 110v50/60Hz AC coil and 1 normally open and 1 normally closed front mounted auxiliary contact.  This Sirius 3-pole contactor comes with screw terminals, mounts on standard 35MM din rail and...

    MSRP: $370.00
    $256.71
    Choose Options