Shop by Category

  • Contactors
  • Overload Relays
  • Manual Motor Starters
  • Full Voltage Starters
  • Soft Starters
  • Variable Frequency Drives
  • Control Relays
  • Pilot Devices
  • Circuit Breakers
  • Disconnect Switches
  • Limit Switches
  • Other

    • Shop by Brand

  • Eaton, Cutler Hammer
  • Siemens
  • Moeller Electric
  • Benshaw
  • Lovato Electric
  • Square D, Telemecanique
  • Sprecher + Schuh
  • Furnas
  • WEG
  • LS Industrial
  • View all Brands

    • 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.

    • Schneider Electric LRD02 overload relay LRD02
      Quick view

      Square D, Telemecanique

      |

      sku: LRD02

      LRD02

      Schneider Electric LRD02 thermal overload relay adjustable from 0.16 to 0.25 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
    • Eaton XTOB006CC1 Overload Relay Eaton XTOB006CC1 Dimensions
      Quick view

      Eaton, Cutler Hammer

      |

      sku: XT0B006CC1

      XTOB006CC1

      Eaton XT0B006CC1 thermal overload relay adjustable from 4 to 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: $180.83
      $52.12
      Add to Cart
    • Eaton/Moeller ZB150-100 overload relay Eaton/Moeller ZB150-100 side dimensions
      Quick view

      Moeller Electric

      |

      sku: ZB150-100

      ZB150-100

      Eaton/Moeller ZB150-100 thermal overload relay that is adjustable from 70 to 100 AMPS and mounts to any DILM80, DILM95, DILM115 or DILM150 3-pole contactor. This 3 phase overload relay comes with manual and automatic reset, phase loss sensitivity and a...

      MSRP: $380.00
      $148.29
      Add to Cart
    • Eaton XTOB2P4BC1 Overload Relay Eaton XTOB2P4BC1 Dimensions
      Quick view

      Eaton, Cutler Hammer

      |

      sku: XT0B2P4BC1

      XTOB2P4BC1

      Eaton XT0B2P4BC1 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: $131.42
      $48.07
      Add to Cart
    • Lovato RF381400 overload relay Lovato RF381400 dimensions
      Quick view

      Lovato Electric

      |

      sku: RF381400

      RF381400

      Lovato Electric RF381400 overload relay adjustable from 9 to 14 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 screw...

      MSRP: $59.51
      $41.61
      Add to Cart
    • GE RT1M overload relay
      Quick view

      GE Industrial

      |

      sku: RT1M

      RT1M

      GE Industrial RT1M 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 5.5 to 8.5 AMPS.  This GE overload relay has Class...

      MSRP: $110.00
      $77.90
      View Details
    • Eaton/Moeller ZB12-6 overload relay Eaton/Moeller ZB12-6 front dimensions
      Quick view

      Moeller Electric

      |

      sku: ZB12-6

      ZB12-6

      Eaton/Moeller ZB12-6 thermal overload relay that is adjustable from 4 to 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
    • Eaton/Moeller ZB12-12 overload relay Eaton/Moeller ZB12-12 front dimensions
      Quick view

      Moeller Electric

      |

      sku: ZB12-12

      ZB12-12

      Eaton/Moeller ZB12-12 thermal overload relay that is adjustable from 9 to 12 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
    • Schneider LRD3363 thermal overload relay Schneider LRD3363 thermal overload relay side view
      Quick view

      Square D, Telemecanique

      |

      sku: LR2D3363

      LRD3363

      Schneider Electric LRD3363 thermal overload relay adjustable from 63 to 80 AMPS and directly mounts to any LC1D65 or LC1D80 TeSys contactor. This 3-pole Schneider Electric overload relay has Class 10 protection, phase loss sensitivity and screw terminals...

      MSRP: $127.00
      $125.38
      Add to Cart
    • Benshaw RMSO-95-65A overload Benshaw RMSO-95-65A front dimensions
      Quick view

      sku: RMSO-95-65A

      RMSO-95-65A

      Benshaw RMSO-95-65A thermal overload relay with adjustable trip from 55 to 75 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
    • Benshaw SPO-22-7A5 Overload Relay
      Quick view

      Benshaw

      |

      sku: SPO-22-7A5

      SPO-22-7A5

      Benshaw SPO-22-7A5 Bimetallic Class 10 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
      $26.39
      Add to Cart
    Compare Selected