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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 3RU2116-1CB0 thermal overload relay Siemens 3RU2116-1CB0 dimensions
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      Siemens

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      sku: 3RU2116-1CB0

      3RU2116-1CB0

      Siemens 3RU2116-1CB0 3 pole IEC rated thermal overload relay that is adjustable from 1.8 to 2.5 AMPS. This Class 10 overload relay trips in under 10 seconds or less in an over current situation and has screw terminals for easy installation and removal...

      MSRP: $72.00
      $51.63
      Add to Cart
    • Siemens 3RU2126-1CB0 thermal overload relay Siemens 3RU2126-1CB0 dimensions
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      Siemens

      3RU2126-1CB0

       The Siemens 3RU2126-1CB0 overload relay is adjustable from 1.8 to 2.5 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 3RU2126-1CB0 wiring diagram Siemens 3RU2126-1EB0 dimensions
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      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
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