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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.

    • Lovato RF380250 overload relay Lovato RF380250 dimensions
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      Lovato Electric

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      sku: RF380250

      RF380250

      Lovato Electric RF380250 overload relay adjustable from 1.6 to 2.5 AMPS and mounts to any BF09, BF12, BF18, BF25 or BF32 3-pole contactor. This overload relay has phase loss protection (single phase...

      MSRP: $59.51
      $41.61
      Add to Cart
    • Benshaw RMSO-95-80A overload Benshaw RMSO-95-80A front dimensions
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      sku: RMSO-95-80A

      RMSO-95-80A

      Benshaw RMSO-95-80A thermal overload relay with adjustable trip from 90 to 100 AMPS - Mounts onto the new style BENSHAW RC contactors from 75 AMP (RC-75A) to 100 AMP (RC-100A) - Manual or Automatic...

      MSRP: $176.00
      $102.00
      Add to Cart
    • GE RT1K overload relay
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      GE Industrial

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      sku: RT1K

      RT1K

      GE Industrial RT1K 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 2...

      $0.00
    • WEG RW27-2D3-U032 overload relay WEG RW27-2D3-U032 side
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      WEG

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      sku: RW27-2D3-U032

      RW27-2D3-U032

      The RW27-2D3-U032 is a three phase overload relay that is adjustable from 22 to 32 AMPS. This thermal overload has phase loss protection which trips when a phase is lost thus protecting the motor...

      MSRP: $50.00
      $35.83
      Add to Cart
    • Benshaw SPO-40H-15A Overload Relay
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      Benshaw

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      sku: SPO-40H-15A

      SPO-40H-15A

      Benshaw SPO-40H-15A Bimetallic Class 20 3 pole overload with a range from 12 to 18 AMPS and mounts directly to the RSC-32 and RSC-40 contactors in any coil voltage.  This 3 phase thermal overload...

      MSRP: $55.00
      $33.08
      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...

      MSRP: $86.00
      $55.46
      Add to Cart
    • Siemens 3RU2126-1KB0 thermal overload relay Siemens 3RU2126-1KB0 dimensions
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      Siemens

      3RU2126-1KB0

       The Siemens 3RU2126-1KB0 overload relay is adjustable from 9 to 12.5 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...

      MSRP: $86.00
      $55.46
      Add to Cart
    • 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...

      MSRP: $86.00
      $55.46
      Add to Cart
    • Siemens 3RU2126-4BB0 thermal overload relay Siemens 3RU2126-4BB0 dimensions
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      Siemens

      3RU2126-4BB0

       The Siemens 3RU2126-4BB0 overload relay is adjustable from 14 to 20 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...

      MSRP: $86.00
      $55.46
      Add to Cart
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