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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 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...

      MSRP: $72.00
      $51.63
      Add to Cart
    • Siemens 3RU2126-4PB0 thermal overload relay Siemens 3RU2126-4PB0 dimensions
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      Siemens

      3RU2126-4PB0

       The Siemens 3RU2126-4PB0 overload relay is adjustable from 30 to 36 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
    • Lovato RF382300 overload relay Lovato RF382300 dimensions
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      Lovato Electric

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      sku: RF382300

      RF382300

      Lovato Electric RF382300 overload relay adjustable from 17 to 23 AMPS and mounts to any BF18, BF25 or BF32 3-pole contactor. This overload relay has phase loss protection (single phase sensitivity),...

      MSRP: $68.10
      $46.90
      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 -...

      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...

      MSRP: $143.00
      $82.94
      Add to Cart
    • Eaton ZE-1.6 thermal overload Eaton ZE-1.6 front dimensions
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      Moeller Electric

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      sku: ZE-1,6

      ZE-1,6

      Eaton/Moeller ZE-1.6 thermal overload relay that is adjustable from 1 to 1.6 AMPS and mounts to any DILEM-10 or DILEM-01 3-pole contactor. This 3 phase overload relay comes with manual and automatic...

      MSRP: $72.00
      $47.63
      Add to Cart
    • Eaton ZE-4 thermal overload Eaton ZE-4 front dimensions
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      Moeller Electric

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      sku: ZE-4

      ZE-4

      Eaton/Moeller ZE-4 thermal overload relay that is adjustable from 2.4 to 4 AMPS and mounts to any DILEM-10 or DILEM-01 3-pole contactor. This 3 phase overload relay comes with manual and automatic...

      MSRP: $72.00
      $47.63
      Add to Cart
    • Siemens 3RU1116-1DB0 thermal overload relay Siemens 3RU1116-1DB0 front dimensions
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      Siemens

      3RU1116-1DB0

      Siemens 3RU1116-1DB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 2.2A to 3.2A and has phase loss protection. The...

      $0.00
    • Siemens 3RU1116-1HB0 thermal overload relay Siemens 3RU1116-1HB0 front dimensions
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      Siemens

      3RU1116-1HB0

      Siemens 3RU1116-1HB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 5.5A to 8A and has phase loss protection. The...

      $0.00
    • Siemens 3RU1126-4BB0 thermal overload relay Siemens 3RU1126-4BB0 front dimensions
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      Siemens

      3RU1126-4BB0

      Siemens 3RU1126-4BB0 class 10 thermal overload relay for direct mounting on size S0 contactors (3RT1023, 3RT1024, 3RT1025 and 3RT1026), is adjustable from 14A to 20A and has phase loss protection...

      $0.00
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