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    • Thermal Overload Relays

    Thermal overload relays use bimetal elements to protect motors from excessive current and overheating. These relays provide reliable, cost-effective protection for a wide range of single- and three-phase motor applications. Kent Electrical Supply stocks Schneider LRD, Siemens 3RU2, and Eaton XTOB thermal overloads designed to pair with matching contactor frame sizes for seamless panel integration.

    Common Applications

    • Motor starters

    • Conveyors & material handling

    • Pumps and compressors

    • Fans and blowers

    • HVAC systems

    AEO-Friendly FAQs

    Q: Are thermal overload relays adjustable?
    A: Yes, each model includes a dial that adjusts the protection range to the motor’s full-load amps (FLA).

    Q: Do thermal overload relays offer phase-loss protection?
    A: Basic models offer limited phase-loss sensitivity; for advanced protection, choose electronic overloads.

    • Eaton XTOM006AC1 thermal overload Eaton XTOM004AC1 front dimensions
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      Eaton, Cutler Hammer

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      sku: XTOM006AC1

      XTOM006AC1

      EATON XTOM006AC1 thermal overload relay with an adjustable AMP range from 4 to 6 AMPS. For use with the 3 pole Eaton XTMC9A10 and XTMC9A01 miniature contactors. Each overload comes standard with an automatic or manual reset, push-to-test button and screw...

      MSRP: $96.00
      $44.78
      View Details
    • Siemens 3RU1116-1KB0 thermal overload relay Siemens 3RU1116-1KB0 front dimensions
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      Siemens

      3RU1116-1KB0

      Siemens 3RU1116-1KB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 9A to 12A and has phase loss protection. The manual or automatic reset feature on this Sirius series...

      $0.00
    • Siemens 3RU1136-4EB0 thermal overload relay
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      Siemens

      3RU1136-4EB0

      Siemens 3RU1136-4EB0 class 10 thermal overload relay for direct mounting on size S2 contactors (3RT1033, 3RT1034, 3RT1035 and 3RT1036), is adjustable from 22A to 32A and has phase loss protection. The manual or automatic reset feature on this...

      $0.00
    • Siemens 3RU2126-4AB0 thermal overload relay Siemens 3RU2126-4AB0 dimensions
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      Siemens

      3RU2126-4AB0

       The Siemens 3RU2126-4AB0 overload relay is adjustable from 11 to 16 AMPS, has a manual or automatic reset option and mounts to any 3RT2 size 0 contactor from 9 to 38 AMPS.  This UL rated thermal overload relay comes with phase loss...

      MSRP: $86.00
      $55.46
      Add to Cart
    • Siemens 3RU2126-4CB0 thermal overload relay Siemens 3RU2126-4CB0 dimensions
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      Siemens

      3RU2126-4CB0

       The Siemens 3RU2126-4CB0 overload relay is adjustable from 17 to 22 AMPS, has a manual or automatic reset option and mounts to any 3RT2 size 0 contactor from 9 to 38 AMPS.  This UL rated thermal overload relay comes with phase loss...

      MSRP: $86.00
      $55.46
      Add to Cart
    • Siemens 3RU2126-4DB0 thermal overload relay Siemens 3RU2126-4DB0 dimensions
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      Siemens

      3RU2126-4DB0

       The Siemens 3RU2126-4DB0 overload relay is adjustable from 20 to 25 AMPS, has a manual or automatic reset option and mounts to any 3RT2 size 0 contactor from 9 to 38 AMPS.  This UL rated thermal overload relay comes with phase loss...

      MSRP: $86.00
      $55.46
      Add to Cart
    • Siemens 3RU2126-4DB1 thermal overload relay Siemens 3RU2126-4DB1 wiring diagram
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      Siemens

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      sku: 3RU2126-4DB1

      3RU2126-4DB1

      Siemens Sirius 3RT2126-4DB1 3 pole IEC rated separate mount thermal overload relay that is adjustable from 20 to 25 AMPS. Unit has class 10 tripping (trips in under 10 seconds or less), screw terminals, Manual or Automatic reset, 1 N.O. and 1 N.C...

      MSRP: $104.00
      $61.10
      Add to Cart
    • Benshaw RMSO-95-55A overload Benshaw RMSO-95-55A front dimensions
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      sku: RMSO-95-55A

      RMSO-95-55A

      Benshaw RMSO-95-55A thermal overload relay with adjustable trip from 45 to 55 AMPS - Mounts onto the new style BENSHAW RC contactors from 75 AMP (RC-75A) to 100 AMP (RC-100A) - Manual or Automatic reset - Class 10 tripping and push to test trip...

      MSRP: $176.00
      $102.00
      Add to Cart
    • Benshaw RMSO63-55A thermal overload relay RMSO63-55A
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      sku: RMSO63-55A

      RMSO63-55A

      Benshaw RMSO63-55A thermal overload relay with possible adjustments ranging from 45 to 65 AMPS - Mounts onto the new style BENSHAW RC contactors 50 AMP (RC-50A) to 65 AMP (RC-65A) - Manual or Automatic reset - Class 10 tripping and push to test trip...

      MSRP: $143.00
      $82.94
      Add to Cart
    • GE RT1F overload relay
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      GE Industrial

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      sku: RT1F

      RT1F

      GE Industrial RT1F thermal overload relay that is 3 phase, has 1 normally open (N.O.) and 1 normally closed (N.C.) base mounted auxiliary contacts, automatic or manual Reset and is adjustable from 0.65 to 1.1 AMPS.  This GE overload relay has Class...

      MSRP: $110.00
      $77.90
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    • GE RT1H overload relay
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      GE Industrial

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      sku: RT1H

      RT1H

      GE Industrial RT1H thermal overload relay that is 3 phase, has 1 normally open (N.O.) and 1 normally closed (N.C.) base mounted auxiliary contacts, automatic or manual reset and is adjustable from 1.3 to 1.9 AMPS.  This GE overload relay has Class...

      $0.00
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