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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 XTOB001BC1 Overload Relay Eaton XTOB001BC1 Dimensions
      Quick view

      Eaton, Cutler Hammer

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      sku: XT0B001BC1

      XTOB001BC1

      Eaton XT0B001BC1 thermal overload relay adjustable from 0.6 to 1 AMP 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: $131.42
      $48.07
      Add to Cart
    • XTOB075DC1 XTOB075DC1
      Quick view

      Eaton, Cutler Hammer

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      sku: XT0B075DC1

      XTOB075DC1

      Eaton XTOB075DC1 thermal overload relay adjustable from 65 to 75 AMPS with 1 N.O and 1 N.C. auxiliaries, manual and automatic reset and a reset button. These thermal overloads are directly mounted to any Eaton XTCE040D, XTCE050D or XTCE065D 3 pole...

      MSRP: $224.00
      $92.61
      View Details
    • Eaton/Moeller ZB32-10 overload relay Eaton/Moeller ZB32-10 front dimensions
      Quick view

      Moeller Electric

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      sku: ZB32-10

      ZB32-10

      Eaton/Moeller ZB32-10 thermal overload relay that is adjustable from 6 to 10 AMPS and mounts to any DILM17, DILM25, or DILM32 3-pole contactor. This 3 phase overload relay comes with manual and automatic reset, phase loss sensitivity and a set of...

      MSRP: $152.00
      $45.98
      Add to Cart
    • Eaton ZE-9 thermal overload Eaton ZE-9 front dimensions
      Quick view

      Moeller Electric

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      sku: ZE-9

      ZE-9

      Eaton/Moeller ZE-9 thermal overload relay that is adjustable from 6 to 9 AMPS and mounts to any DILEM-10 or DILEM-01 3-pole contactor. This 3 phase overload relay comes with manual and automatic reset, phase loss sensitivity and a set of normally open...

      MSRP: $72.00
      $47.63
      Add to Cart
    • Siemens 3RU2116-1JB0 thermal overload relay Siemens 3RU2116-1JB0 dimensions
      Quick view

      Siemens

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      sku: 3RU2116-1JB0

      3RU2116-1JB0

      Siemens 3RU2116-1JB0 3 pole IEC rated thermal overload relay that is adjustable from 7 to 10 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 3RU2126-4BB1 thermal overload relay Siemens 3RU2126-4BB1 wiring diagram
      Quick view

      Siemens

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      sku: 3RU2126-4BB1

      3RU2126-4BB1

      Siemens Sirius 3RT2126-4BB1 3 pole IEC rated separate mount thermal overload relay that is adjustable from 14 to 20 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
    • Schneider Electric LRD04 overload relay LRD04
      Quick view

      Square D, Telemecanique

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      sku: LRD04

      LRD04

      Schneider Electric LRD04 thermal overload relay adjustable from 0.40 to 0.63 AMPS and directly mounts to any LC1D09 through LC1D32 TeSys contactor. This 3-pole Schneider Electric overload relay has Class 10 protection, phase loss sensitivity and screw...

      MSRP: $60.00
      $40.95
      Add to Cart
    • Schneider LRD3361 thermal overload relay Schneider LRD3361 thermal overload relay side view
      Quick view

      Square D, Telemecanique

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      sku: LRD3361

      LRD3361

      Schneider Electric LRD3361 thermal overload relay adjustable from 55 to 70 AMPS and directly mounts to any LC1D50 through LC1D80 TeSys contactor. This 3-pole Schneider Electric overload relay has Class 10 protection, phase loss sensitivity and screw...

      MSRP: $127.00
      $125.38
      Add to Cart
    • RMSO95 RMSO95
      Quick view

      sku: RMSO95

      RMSO95

      Benshaw RMSO95 thermal overload relay with possible adjustments ranging from 9 to 100 AMPS (must choose specific AMP range above) - Mounts onto the new style BENSHAW RC contactors from 75 AMP (RC-75A) to 100 AMP (RC-100A) - Manual or Automatic reset -...

      MSRP: $176.00
      $102.00
      Choose Options
    • WEG RW27-1D3-U004 overload relay WEG RW27-1D3-U004 front dimensions
      Quick view

      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 from irreparable damage and costly repairs. Class 10...

      MSRP: $50.00
      $32.24
      Add to Cart
    • XTOB016BC1 XTOB016BC1
      Quick view

      Eaton, Cutler Hammer

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      sku: XT0B016BC1

      XTOB016BC1

      Eaton XT0B016BC1 thermal overload relay adjustable from 12 to 16 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: $148.55
      $50.78
      Add to Cart
    • Eaton XTOB024CC1DP overload relay Eaton XTOB024CC1DP dimensions
      Quick view

      Eaton, Cutler Hammer

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      sku: XTOB024CC1DP

      XTOB024CC1DP

      The Eaton XTOB024CC1DP thermal overload relay is adjustable from 16 to 24 AMPS, has a manual or automatic reset and mounts to any 3 pole C25D definite purpose contactor from 15 to 40 AMPS.  Each overload relay provides phase loss sensitivity, comes...

      MSRP: $124.00
      $68.99
      Add to Cart
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