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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.

    • Siemens 3RU2126-1CB0 wiring diagram Siemens 3RU2126-1EB0 dimensions
      Quick view

      Siemens

      3RU2126-1EB0

       The Siemens 3RU2126-1EB0 overload relay is adjustable from 2.8 to 4 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 3RU2126-1GB0 thermal overload relay Siemens 3RU2126-1GB0 dimensions
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      Siemens

      3RU2126-1GB0

       The Siemens 3RU2126-1GB0 overload relay is adjustable from 4.5 to 6.3 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 3RU2126-1KB1 thermal overload relay Siemens 3RU2126-1KB1 wiring diagram
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      Siemens

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      sku: 3RU2126-1KB1

      3RU2126-1KB1

      Siemens Sirius 3RT2126-1KB1 3 pole IEC rated separate mount thermal overload relay that is adjustable from 9 to 12.5 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
    • Siemens 3RU2126-4FB0 thermal overload relay Siemens 3RU2126-4FB0 dimensions
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      Siemens

      3RU2126-4FB0

       The Siemens 3RU2126-4FB0 overload relay is adjustable from 34 to 40 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
      View Details
    • Lovato RF382500 overload relay Lovato RF382500 dimensions
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      Lovato Electric

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      sku: RF382500

      RF382500

      Lovato Electric RF382500 overload relay adjustable from 20 to 25 AMPS and mounts to any BF25 or BF32 3-pole contactor. This overload relay has phase loss protection (single phase sensitivity), manual or automatic reset options and screw terminals for...

      MSRP: $68.10
      $46.90
      Add to Cart
    • RMSO32-19A RMSO32-19A
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      sku: RMSO32-19A

      RMSO32-19A

      Benshaw RMSO32-19A thermal overload relay with adjustable range from 16 to 22 AMPS - Mounts onto the new style BENSHAW RC contactors from 9 AMP (RC-9A) to 40 AMP (RC-40A) - Manual or Automatic reset - Class 10 tripping and push to test trip...

      MSRP: $92.00
      $53.36
      Add to Cart
    • RMSO32-34A RMSO32-34A
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      sku: RMSO32-34A

      RMSO32-34A

      Benshaw RMSO32-34A thermal overload relay with adjustable range from 28 to 40 AMPS - Mounts onto the new style BENSHAW RC contactors from 9 AMP (RC-9A) to 40 AMP (RC-40A) - Manual or Automatic reset - Class 10 tripping and push to test trip...

      MSRP: $92.00
      $53.36
      Add to Cart
    • GE RT2G overload relay
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      GE Industrial

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      sku: RT2G

      RT2G

      GE Industrial RT2G 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 42 to 55 AMPS.  This GE overload relay has Class 10...

      $0.00
    • GE RT2H overload relay
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      GE Industrial

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      sku: RT2H

      RT2H

      GE Industrial RT2H 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 54 to 65 AMPS.  This GE overload relay has Class 10...

      $0.00
    • GE RT2L overload relay
      Quick view

      GE Industrial

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      sku: RT2L

      RT2L

      GE Industrial RT2L 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 78 to 97 AMPS.  This GE overload relay has Class 10...

      MSRP: $198.00
      $141.40
      View Details
    • WEG RW117-1D3-U080 overload relay
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      WEG

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      sku: RW117-1D3-U080

      RW117-1D3-U080

      The RW117-1D3-U080 is a three phase overload relay with adjustments from 63 to 80 AMPS. This thermal overload has phase loss protection which trips when a phase is lost thus protecting the motor from irreparable damage and costly repairs. Class 10...

      MSRP: $192.00
      $96.71
      Add to Cart
    • WEG RW117-1D3-U097 overload relay
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      WEG

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      sku: RW117-1D3-U097

      RW117-1D3-U097

      The RW117-1D3-U097 is a three phase overload relay with adjustments from 75 to 97 AMPS. This thermal overload has phase loss protection which trips when a phase is lost thus protecting the motor from irreparable damage and costly repairs. Class 10...

      MSRP: $192.00
      $123.76
      Add to Cart
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