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.

    • GE RT1V overload relay
      Quick view

      GE Industrial

      |

      sku: RT1V

      RT1V

      GE Industrial RT1V 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 25...

      $0.00
    • Benshaw SPO-40H-22A Overload Relay
      Quick view

      Benshaw

      |

      sku: SPO-40H-22A

      SPO-40H-22A

      Benshaw SPO-40H-22A Bimetallic Class 20 3 pole overload with a range from 18 to 26 AMPS and mounts directly to the RSC-32 and RSC-40 contactors in any coil voltage.  This 3 phase thermal overload...

      MSRP: $55.00
      $33.08
      Add to Cart
    • Eaton/Moeller ZB32-32 overload relay Eaton/Moeller ZB32-32 front dimensions
      Quick view

      Moeller Electric

      |

      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,...

      MSRP: $192.00
      $54.32
      Add to Cart
    • GE RT1L overload relay
      Quick view

      GE Industrial

      |

      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...

      $0.00
    • GE RT1P overload relay
      Quick view

      GE Industrial

      |

      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...

      $0.00
    Compare Selected