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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 3RU2126-4AB0 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
      View Details
    • 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
    • WEG RW27-1D3-D125 overload relay WEG RW27-1D3-D125 front dimensions
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      WEG

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      sku: RW27-1D3-D125

      RW27-1D3-D125

      The RW27-1D3-D125 is a three phase overload relay that is adjustable from 8 to 12.5 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: $50.00
      $32.24
      Add to Cart
    • 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 from irreparable damage and costly repairs. Class 10...

      MSRP: $50.00
      $35.83
      Add to Cart
    • WEG RW67-2D3-U050 overload relay WEG RW67-2D3-U050 front dimensions
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      WEG

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      sku: RW67-2D3-U050

      RW67-2D3-U050

      The RW67-2D3-U050 is a three phase overload relay with adjustments from 32 to 50 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: $94.00
      $60.60
      Add to Cart
    • SPO-150-107A SPO-150-107A
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      Benshaw

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      sku: SPO-150-107A

      SPO-150-107A

      Benshaw SPO-150-107A Bimetallic Class 10 3 pole overload with a range from 85 to 125 AMPS and mounts directly to the RSC-150 contactor in any coil voltage.  This 3 phase thermal overload relays come with an adjustable dial for easily setting the...

      MSRP: $210.00
      $96.84
      Add to Cart
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