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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.

    • XTOB100GC1 Eaton XTOB100GC1 front dimensions
      Quick view

      Eaton, Cutler Hammer

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      sku: XTOB100GC1

      XTOB100GC1

      Eaton XTOB100GC1 thermal overload relay adjustable from 70 to 100 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: $451.33
      $148.29
      Add to Cart
    • XTOB010DC1 XTOB010DC1
      Quick view

      Eaton, Cutler Hammer

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      sku: XT0B010DC1

      XTOB010DC1

      Eaton XTOB010DC1 thermal overload relay adjustable from 6 to 10 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: $132.00
      $67.86
      Add to Cart
    • Eaton/Moeller ZB32-32 overload relay Eaton/Moeller ZB32-32 front dimensions
      Quick view

      Moeller Electric

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      sku: ZB32-32

      ZB32-32

      Eaton ZB32-32 thermal overload relay that is adjustable from 24 to 32 AMPS and mounts to any DILM25 or DILM32 3-pole contactor. This 3 phase overload relay comes with manual and automatic reset, phase loss sensitivity and a set of normally open and...

      MSRP: $192.00
      $54.32
      Add to Cart
    • Lovato RF381000 overload relay Lovato RF381000 dimensions
      Quick view

      Lovato Electric

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      sku: RF381000

      RF381000

      Lovato Electric RF381000 overload relay adjustable from 6.3 to 10 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...

      MSRP: $59.51
      $41.61
      Add to Cart
    • GE RT1L overload relay
      Quick view

      GE Industrial

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      sku: RT1L

      RT1L

      GE Industrial RT1L 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 4 to 6.3 AMPS.  This GE overload relay has Class 10...

      $0.00
    • Eaton XTOB1P6BC1 Overload Relay Eaton XTOB1P6BC1 Dimensions
      Quick view

      Eaton, Cutler Hammer

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      sku: XT0B1P6BC1

      XTOB1P6BC1

      Eaton XT0B1P6BC1 thermal overload relay adjustable from 1 to 1.6 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: $131.42
      $48.07
      Add to Cart
    • Eaton/Moeller ZB32-4 overload relay Eaton/Moeller ZB32-4 front dimensions
      Quick view

      Moeller Electric

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      sku: ZB32-4

      ZB32-4

      Eaton/Moeller ZB32-4 thermal overload relay that is adjustable from 2.4 to 4 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 C306DN3 overload base Eaton C306DN3 side label
      Quick view

      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
      Choose Options
    • GE RT1P overload relay
      Quick view

      GE Industrial

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      sku: RT1P

      RT1P

      GE Industrial RT1P 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 10 to 16 AMPS.  This GE overload relay has Class 10...

      $0.00
    • GE RT1T overload relay
      Quick view

      GE Industrial

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      sku: RT1T

      RT1T

      GE Industrial RT1T 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 17.5 to 22 AMPS.  This GE overload relay has Class...

      $0.00
    • Eaton/Moeller ZB32-2.4 overload relay Eaton/Moeller ZB32-2.4 front dimensions
      Quick view

      Moeller Electric

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      sku: ZB32-2,4

      ZB32-2,4

      Eaton/Moeller ZB32-2.4 thermal overload relay that is adjustable from 1.6 to 2.4 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/Moeller ZB65-65 overload relay Eaton/Moeller ZB65-65 front dimensions
      Quick view

      Moeller Electric

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      sku: ZB65-65

      ZB65-65

      Eaton/Moeller ZB65-65 thermal overload relay that is adjustable from 50 to 65 AMPS and mounts to any DILM50 or DILM65 3-pole contactor. This 3 phase overload relay comes with manual and automatic reset, phase loss sensitivity and a set of normally open...

      MSRP: $260.00
      $108.30
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