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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.

    • Eaton/Moeller ZB12-1.6 overload relay Eaton/Moeller ZB12-1.6 front dimensions
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      Moeller Electric

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      sku: ZB12-1,6

      ZB12-1,6

      Eaton/Moeller ZB12-1.6 thermal overload relay that is adjustable from 1 to 1.6 AMPS and mounts to any DILM7, DILM9 or DILM12 3-pole contactor. This 3 phase overload relay comes with manual and automatic reset, phase loss sensitivity and a set of normally...

      MSRP: $144.00
      $42.68
      Add to Cart
    • Siemens 3RU1116-1CB0 thermal overload relay Siemens 3RU1116-1CB0 front dimensions
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      Siemens

      3RU1116-1CB0

      Siemens 3RU1116-1CB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 1.8A to 2.5A and has phase loss protection. The manual or automatic reset feature on this Sirius...

      MSRP: $70.00
      $56.32
      Add to Cart
    • Siemens 3RU1116-1JB0 thermal overload relay Siemens 3RU1116-1JB0 front dimensions
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      Siemens

      3RU1116-1JB0

      Siemens 3RU1116-1JB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 7A to 10A and has phase loss protection. The manual or automatic reset feature on this Sirius series...

      $0.00
    • Siemens 3RU2116-1AB0 thermal overload relay Siemens 3RU2116-1AB0 dimensions
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      Siemens

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      sku: 3RU2116-1AB0

      3RU2116-1AB0

      Siemens 3RU2116-1AB0 3 pole IEC rated thermal overload relay that is adjustable from 1.1 to 1.6 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 3RU2116-4AB0 thermal overload relay Siemens 3RU2116-4AB0 dimensions
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      Siemens

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      sku: 3RU2116-4AB0

      3RU2116-4AB0

      Siemens 3RU2116-4AB0 3 pole IEC rated thermal overload relay that is adjustable from 11 to 16 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
    • Schneider LRD3353 thermal overload relay Schneider LRD3353 thermal overload relay side view
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      Square D, Telemecanique

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      sku: LRD3353

      LRD3353

      Schneider Electric LRD3353 thermal overload relay adjustable from 23 to 32 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
    • RMSO32-11A RMSO32-11A
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      sku: RMSO32-11A

      RMSO32-11A

      Benshaw RMSO32-11A thermal overload relay with adjustable range from 9 to 13 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 button RMSO...

      MSRP: $92.00
      $53.36
      Add to Cart
    • Benshaw RMSO63-42A thermal overload relay RMSO63-42A
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      sku: RMSO63-42A

      RMSO63-42A

      Benshaw RMSO63-42A thermal overload relay with possible adjustments ranging from 34 to 50 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
    • 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 from irreparable damage and costly repairs. Class...

      MSRP: $50.00
      $32.24
      Add to Cart
    • Eaton XTOB1P6CC1 Overload Relay Eaton XTOB1P6CC1 Dimensions
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      Eaton, Cutler Hammer

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      sku: XT0B1P6CC1

      XTOB1P6CC1

      Eaton XT0B1P6CC1 thermal overload relay adjustable from 1.6 to 2.4 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...

      MSRP: $180.00
      $52.12
      View Details
    • Eaton/Moeller ZB150-125 overload relay Eaton/Moeller ZB150-125 front dimensions
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      Moeller Electric

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      sku: ZB150-125

      ZB150-125

      Eaton/Moeller ZB150-125 thermal overload relay that is adjustable from 95 to 125 AMPS and mounts to any DILM95, DILM115 or DILM150 3-pole contactor. This 3 phase overload relay comes with manual and automatic reset, phase loss sensitivity and a set of...

      MSRP: $560.00
      $210.62
      Add to Cart
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