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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 3RU2116-1DB0 thermal overload relay Siemens 3RU2116-1DB0 dimensions
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      Siemens

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      sku: 3RU2116-1DB0

      3RU2116-1DB0

      Siemens 3RU2116-1DB0 3 pole IEC rated thermal overload relay that is adjustable from 2.2 to 3.2 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 3RU2116-1EB0 thermal overload relay Siemens 3RU2116-1EB0 dimensions
      Quick view

      Siemens

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      sku: 3RU2116-1EB0

      3RU2116-1EB0

      Siemens 3RU2116-1EB0 3 pole IEC rated thermal overload relay that is adjustable from 2.8 to 4 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
    • GE RT1N overload relay
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      GE Industrial

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      sku: RT1N

      RT1N

      GE Industrial RT1N 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 8 to 12 AMPS.  This GE overload relay has Class 10...

      $0.00
    • GE RT1S overload relay
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      GE Industrial

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      sku: RT1S

      RT1S

      GE Industrial RT1S 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 14.5 to 18 AMPS.  This GE overload relay has Class...

      $0.00
    • WEG RW27-1D3-D028 overload relay WEG RW27-1D3-D028 front dimensions
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      WEG

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      sku: RW27-1D3-D028

      RW27-1D3-D028

      The RW27-1D3-D028 is a three phase overload relay that is adjustable from 1.8 to 2.8 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
    • Benshaw SPO-22-8A5 Overload Relay
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      Benshaw

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      sku: SPO-22-8A5

      SPO-22-8A5

      Benshaw SPO-22-8A5 Bimetallic Class 10 3 pole overload with a range from 7 to 10 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-7.5A overload relay
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      Benshaw

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      sku: SPO-22H-7.5A

      SPO-22H-7.5A

      Benshaw SPO-22H-7.5A Bimetallic Class 20 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
      $34.19
      Add to Cart
    • Eaton XTOB150GC1 thermal overload relay Eaton XTOB150GC1 front dimensions
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      Eaton, Cutler Hammer

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      sku: XTOB150GC1

      XTOB150GC1

      Eaton XTOB150GC1 thermal overload relay adjustable from 120 to 150 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: $640.97
      $210.62
      Add to Cart
    • Eaton/Moeller ZB12-1 overload relay Eaton/Moeller ZB12-1 front dimensions
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      Moeller Electric

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      sku: ZB12-1

      ZB12-1

      Eaton/Moeller ZB12-1 thermal overload relay that is adjustable from 0.60 to 1 AMP 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
    • Eaton/Moeller ZB32-0.16 overload relay Eaton/Moeller ZB32-0.16 front dimensions
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      Moeller Electric

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      sku: ZB32-0,16

      ZB32-0,16

      Eaton/Moeller ZB32-0.16 thermal overload relay that is adjustable from 0.10 to 0.16 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
    • Benshaw RMSO-95-80A overload Benshaw RMSO-95-80A front dimensions
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      sku: RMSO-95-80A

      RMSO-95-80A

      Benshaw RMSO-95-80A thermal overload relay with adjustable trip from 90 to 100 AMPS - Mounts onto the new style BENSHAW RC contactors from 75 AMP (RC-75A) to 100 AMP (RC-100A) - Manual or Automatic reset - Class 10 tripping and push to test trip...

      MSRP: $176.00
      $102.00
      Add to Cart
    • GE RT1K overload relay
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      GE Industrial

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      sku: RT1K

      RT1K

      GE Industrial RT1K 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 2.5 to 4.1 AMPS.  This GE overload relay has Class...

      $0.00
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