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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.

    • Benshaw SPO-22-7A5 Overload Relay
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      Benshaw

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      sku: SPO-22-7A5

      SPO-22-7A5

      Benshaw SPO-22-7A5 Bimetallic Class 10 3 pole overload with a range from 6 to 9 AMPS and mounts directly to the RSC-9, RSC-12, RSC-18 and RSC-22 contactor in any coil voltage.  This 3 phase thermal overload relay comeS with an adjustable dial for...

      MSRP: $48.00
      $26.39
      Add to Cart
    • Benshaw SPO-22H-15A overload relay
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      Benshaw

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      sku: SPO-22H-15A

      SPO-22H-15A

      Benshaw SPO-22H-15A Bimetallic Class 20 3 pole overload with a range from 12 to 18 AMPS and mounts directly to the RSC-9, RSC-12, RSC-18 and RSC-22 contactor in any coil voltage.  This 3 phase thermal overload relay comeS with an adjustable dial for...

      MSRP: $48.00
      $34.19
      Add to Cart
    • Eaton XTOB004CC1 Overload Relay Eaton XTOB004CC1 Dimensions
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      Eaton, Cutler Hammer

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      sku: XT0B004CC1

      XTOB004CC1

      Eaton XT0B004CC1 thermal overload relay adjustable from 2.4 to 4 AMPS with 1 N.O and 1 N.C. auxiliaries, manual and automatic reset and phase loss protection. These thermal overloads offer Class 10 tripping (trips in 10 seconds or less) and are directly...

      MSRP: $180.83
      $52.12
      Add to Cart
    • Siemens 3RU2136-4FB0 thermal overload relay 3RU2136-4FB0 Front Dimensions
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      Siemens

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      sku: 3RU2136-4FB0

      3RU2136-4FB0

      Siemens 3RU2136-4FB0 Class 10 thermal overload relay for mounting on new Sirius 3RT203 size S2 contactors (3RT2035, 3RT2036, 3RT2037 and 3RT2038) and is adjustable from 28 to 40 AMPS.  This Siemens Sirius overload relay comes with 1 normally...

      MSRP: $227.00
      $106.30
      Add to Cart
    • Schneider LRD3355 thermal overload relay Schneider LRD3355 thermal overload relay side view
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      Square D, Telemecanique

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      sku: LRD3355

      LRD3355

      Schneider Electric LRD3355 thermal overload relay adjustable from 30 to 40 AMPS and directly mounts to any LC1D40 through LC1D65 TeSys contactor. This 3-pole Schneider Electric overload relay has Class 10 protection, phase loss sensitivity and screw...

      MSRP: $107.00
      $93.11
      Add to Cart
    • Lovato RF380400 overload relay Lovato RF380400 dimensions
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      Lovato Electric

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      sku: RF380400

      RF380400

      Lovato Electric RF380400 overload relay adjustable from 2.5 to 4 AMPS and mounts to any BF09, BF12, BF18, BF25 or BF32 3-pole contactor. This overload relay has phase loss protection (single phase sensitivity), manual or automatic reset options and screw...

      MSRP: $59.51
      $41.61
      Add to Cart
    • GE RT1G overload relay
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      GE Industrial

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      sku: RT1G

      RT1G

      GE Industrial RT1G 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 to 1.5 AMPS.  This GE overload relay has Class 10...

      $0.00
    • WEG RW67-1D3-U050 overload relay WEG RW67-1D3-U050 front dimensions
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      WEG

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      sku: RW67-1D3-U050

      RW67-1D3-U050

      The RW67-1D3-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
    • Siemens 3RU2116-1FB0 thermal overload relay Siemens 3RU2116-1FB0 dimensions
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      Siemens

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      sku: 3RU2116-1FB0

      3RU2116-1FB0

      Siemens 3RU2116-1FB0 3 pole IEC rated thermal overload relay that is adjustable from 3.5 to 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
    • Eaton C306DN3 overload base Eaton C306DN3 side label
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      sku: C306DN3

      C306DN3

      Eaton C306DN3 Overload Relay – 32 AMP, 3-Pole, NEMA Size 00/0 Looking for a reliable overload protection solution for your motor control system? The Eaton C306DN3 is a factory-new, 3-pole thermal overload relay rated for up to 32 AMPs. Designed...

      MSRP: $316.14
      $144.77
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    • GE RT1V overload relay
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      GE Industrial

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      sku: RT1V

      RT1V

      GE Industrial RT1V 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 25 to 32 AMPS.  This GE overload relay has Class 10...

      $0.00
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