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 3RT2017-1BD42 electrical contactor Siemens 3RT2017-1BD42 comparison

    3RT2017-1BD42

    Siemens 3RT2017-1BD42 12 AMP contactor with 1 normally closed base mounted auxiliary and a 42 volt DC coil. This Sirius 3-pole contactor has screw terminals, mounts on DIN rail and is rated for 3 H.P. @ 230 volt, 7.5 H.P. @ 460 volt 3-Phase. The...

    MSRP: $132.00
    $82.67
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  • Siemens 3RT2017-1BF41 electrical contactor Siemens 3RT2017-1BF41 comparison

    3RT2017-1BF41

    Siemens 3RT2017-1BF41 12 AMP contactor with 1 normally open base mounted auxiliary and a 110 volt DC coil. This Sirius 3-pole contactor has screw terminals, mounts on DIN rail and is rated for 3 H.P. @ 230 volt, 7.5 H.P. @ 460 volt 3-Phase. The...

    MSRP: $132.00
    $82.67
    Choose Options
  • Siemens 3RT2017-1BF42 electrical contactor Siemens 3RT2017-1BF42 comparison

    3RT2017-1BF42

    Siemens 3RT2017-1BF42 12 AMP contactor with 1 normally closed base mounted auxiliary and a 110 volt DC coil. This Sirius 3-pole contactor has screw terminals, mounts on DIN rail and is rated for 3 H.P. @ 230 volt, 7.5 H.P. @ 460 volt 3-Phase. The...

    MSRP: $132.00
    $82.67
    Choose Options
  • Siemens 3RT2017-1BG41 electrical contactor Siemens 3RT2017-1BG41 comparison

    3RT2017-1BG41

    Siemens 3RT2017-1BG41 12 AMP contactor with 1 normally open base mounted auxiliary and a 125 volt DC coil. This Sirius 3-pole contactor has screw terminals, mounts on DIN rail and is rated for 3 H.P. @ 230 volt, 7.5 H.P. @ 460 volt 3-Phase. The...

    MSRP: $132.00
    $82.67
    Choose Options
  • Siemens 3RT2017-1BG42 electrical contactor Siemens 3RT2017-1BG42 comparison

    3RT2017-1BG42

    Siemens 3RT2017-1BG42 12 AMP contactor with 1 normally closed base mounted auxiliary and a 125 volt DC coil. This Sirius 3-pole contactor has screw terminals, mounts on DIN rail and is rated for 3 H.P. @ 230 volt, 7.5 H.P. @ 460 volt 3-Phase. The...

    MSRP: $132.00
    $82.67
    Choose Options
  • Siemens 3RT2017-1BM41 electrical contactor Siemens 3RT2017-1BM41 comparison

    3RT2017-1BM41

    Siemens 3RT2017-1BM41 12 AMP contactor with 1 normally open base mounted auxiliary and a 220 volt DC coil. This Sirius 3-pole contactor has screw terminals, mounts on DIN rail and is rated for 3 H.P. @ 230 volt, 7.5 H.P. @ 460 volt 3-Phase. The...

    MSRP: $132.00
    $82.67
    Choose Options
  • Siemens 3RT2017-1BM42 electrical contactor Siemens 3RT2017-1BM42 comparison

    3RT2017-1BM42

    Siemens 3RT2017-1BM42 12 AMP contactor with 1 normally closed base mounted auxiliary and a 220 volt DC coil. This Sirius 3-pole contactor has screw terminals, mounts on DIN rail and is rated for 3 H.P. @ 230 volt, 7.5 H.P. @ 460 volt 3-Phase. The...

    MSRP: $132.00
    $82.67
    Choose Options
  • Siemens 3RT2017-1BP41 electrical contactor Siemens 3RT2017-1BP41 comparison

    3RT2017-1BP41

    Siemens 3RT2017-1BP41 12 AMP contactor with 1 normally open base mounted auxiliary and a 230 volt DC coil. This Sirius 3-pole contactor has screw terminals, mounts on DIN rail and is rated for 3 H.P. @ 230 volt, 7.5 H.P. @ 460 volt 3-Phase. The...

    MSRP: $132.00
    $82.67
    Choose Options
  • Siemens 3RT2017-1BP42 electrical contactor Siemens 3RT2017-1BP42 comparison

    3RT2017-1BP42

    Siemens 3RT2017-1BP42 12 AMP contactor with 1 normally closed base mounted auxiliary and a 230 volt DC coil. This Sirius 3-pole contactor has screw terminals, mounts on DIN rail and is rated for 3 H.P. @ 230 volt, 7.5 H.P. @ 460 volt 3-Phase. The...

    MSRP: $132.00
    $82.67
    Choose Options
  • Siemens 3RT2017-1BW41 electrical contactor Siemens 3RT2017-1BW41 comparison

    3RT2017-1BW41

    Siemens 3RT2017-1BW41 12 AMP contactor with 1 normally open base mounted auxiliary and a 48 volt DC coil. This Sirius 3-pole contactor has screw terminals, mounts on DIN rail and is rated for 3 H.P. @ 230 volt, 7.5 H.P. @ 460 volt 3-Phase. The...

    MSRP: $132.00
    $82.67
    Choose Options
  • Siemens 3RT2017-1BW42 electrical contactor Siemens 3RT2017-1BW42 comparison

    3RT2017-1BW42

    Siemens 3RT2017-1BW42 12 AMP contactor with 1 normally closed base mounted auxiliary and a 48 volt DC coil. This Sirius 3-pole contactor has screw terminals, mounts on DIN rail and is rated for 3 H.P. @ 230 volt, 7.5 H.P. @ 460 volt 3-Phase. The...

    MSRP: $132.00
    $82.67
    Choose Options
  • Siemens 3RT2018-1AD01 electrical contactor Siemens 3RT2018-1AD01 front dimensions

    3RT2018-1AD01

    Siemens 3RT2018-1AD01 12 AMP contactor with 1 normally open base mounted auxiliary and a 42v50/60Hz AC coil. This Sirius 3-pole contactor has screw terminals, mounts on DIN rail and is rated for 5 H.P. @ 230 volt, 10 H.P. @ 460 volt 3-Phase. The...

    MSRP: $131.00
    $84.70
    Choose Options