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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.

    • WEG RW117-1D overload relay
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      WEG

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      sku: RW117-1D

      RW117-1D

      The RW117-1D is a three phase overload relay with adjustments ranging from 63 up to 112 AMPS (choose specific AMP range above). This thermal overload has phase loss protection which trips when a...

      MSRP: $192.00
      $96.71
      Choose Options
    • WEG RW27-1D3-U004 overload relay WEG RW27-1D3-U004 front dimensions
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      WEG

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      sku: RW27-1D3-U004

      RW27-1D3-U004

      The RW27-1D3-U004 is a three phase overload relay that is adjustable from 2.8 to 4 AMPS. This thermal overload has phase loss protection which trips when a phase is lost thus protecting the motor...

      MSRP: $50.00
      $32.24
      Add to Cart
    • 3RU2136-4EB0 Siemens Sirius Thermal Overload Relay 3RU2136-4EB0 Front Dimensions
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      Siemens

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      sku: 3RU2136-4EB0

      3RU2136-4EB0

      Siemens 3RU2136-4EB0 Class 10 thermal overload relay for mounting on new Sirius 3RT203 size S2 contactors (3RT2035, 3RT2036, 3RT2037 and 3RT2038) and is adjustable from 22 to 32 AMPS.  This Siemens...

      MSRP: $194.00
      $102.20
      Add to Cart
    • WEG RW27-1D3-D018 overload relay WEG RW27-1D3-D018 front dimensions
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      WEG

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      sku: RW27-1D3-D018

      RW27-1D3-D018

      The RW27-1D3-D018 is a three phase overload relay that is adjustable from 1.2 to 1.8 AMPS. This thermal overload has phase loss protection which trips when a phase is lost thus protecting the motor...

      MSRP: $50.00
      $32.24
      Add to Cart
    • WEG RW27-2D3-U004 overload relay WEG RW27-2D3-U004 side
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      WEG

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      sku: RW27-2D3-U004

      RW27-2D3-U004

      The RW27-2D3-U004 is a three phase overload relay that is adjustable from 2.8 to 4 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-22-2A1 Overload Relay
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      Benshaw

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      sku: SPO-22-2A1

      SPO-22-2A1

      Benshaw SPO-22-2A1 Bimetallic Class 10 3 pole overload with a range from 1.6 to 2.5 AMPS and mounts directly to the RSC-9, RSC-12, RSC-18 and RSC-22 contactor in any coil voltage.  This 3 phase...

      MSRP: $25.13
      $24.81
      Add to Cart
    • RMSO32-15A RMSO32-15A
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      sku: RMSO32-15A

      RMSO32-15A

      Benshaw RMSO32-15A thermal overload relay with adjustable range from 12 to 18 AMPS - Mounts onto the new style BENSHAW RC contactors from 9 AMP (RC-9A) to 40 AMP (RC-40A) - Manual or Automatic reset...

      MSRP: $92.00
      $53.36
      Add to Cart
    • RMSO63 RMSO63
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      sku: RMSO63

      RMSO63

      Benshaw RMSO63 thermal overload relay with possible adjustments ranging from 7 to 65 AMPS (must choose specific AMP range above) - Mounts onto the new style BENSHAW RC contactors 50 AMP (RC-50A) to...

      MSRP: $143.00
      $82.94
      Choose Options
    • WEG RW27-2D3-U010 overload relay WEG RW27-2D3-U010 side
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      WEG

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      sku: RW27-2D3-U010

      RW27-2D3-U010

      The RW27-2D3-U010 is a three phase overload relay that is adjustable from 7 to 10 AMPS. This thermal overload has phase loss protection which trips when a phase is lost thus protecting the motor from...

      MSRP: $50.00
      $35.83
      Add to Cart
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