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.

    • Siemens 3RU1116-0BB0 thermal overload relay Siemens 3RU1116-0BB0 front dimensions
      Quick view

      Siemens

      3RU1116-0BB0

      Siemens 3RU1116-0BB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 0.14A to 0.20A and has phase loss protection. The...

      $0.00
    • Siemens 3RU1116-1EB0 thermal overload relay Siemens 3RU1116-1EB0 front dimensions
      Quick view

      Siemens

      3RU1116-1EB0

      Siemens 3RU1116-1EB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 2.8A to 4A and has phase loss protection. The...

      $0.00
    • Siemens 3RU1126-1EB0 thermal overload relay Siemens 3RU1126-1EB0 front dimensions
      Quick view

      Siemens

      3RU1126-1EB0

      Siemens 3RU1126-1EB0 class 10 thermal overload relay for direct mounting on size S0 contactors (3RT1023, 3RT1024, 3RT1025 and 3RT1026), is adjustable from 2.8A to 4A and has phase loss protection...

      $0.00
    • Siemens 3RU1126-1HB0 thermal overload relay Siemens 3RU1126-1HB0 front dimensions
      Quick view

      Siemens

      3RU1126-1HB0

      Siemens 3RU1126-1HB0 class 10 thermal overload relay for direct mounting on size S0 contactors (3RT1023, 3RT1024, 3RT1025 and 3RT1026), is adjustable from 5.5A to 8A and has phase loss protection...

      $0.00
    • Siemens 3RU1126-1JB0 thermal overload relay Siemens 3RU1126-1JB0 front dimensions
      Quick view

      Siemens

      3RU1126-1JB0

      Siemens 3RU1126-1JB0 class 10 thermal overload relay for direct mounting on size S0 contactors (3RT1023, 3RT1024, 3RT1025 and 3RT1026), is adjustable from 7A to 10A and has phase loss protection...

      $0.00
    • Siemens 3RU1126-4AB0 overload Siemens 3RU1126-4AB0 front dimensions
      Quick view

      Siemens

      |

      sku: 3RU1126-4AB0

      3RU1126-4AB0

      Siemens 3RU1126-4AB0 class 10 thermal overload relay for direct mounting on size S0 contactors (3RT1023, 3RT1024, 3RT1025 and 3RT1026), is adjustable from 11A to 16A and has phase loss protection...

      $0.00
    • Siemens 3RU1126-4DB0 thermal overload relay Siemens 3RU1126-4DB0 front dimensions
      Quick view

      Siemens

      3RU1126-4DB0

      Siemens 3RU1126-4DB0 class 10 thermal overload relay for direct mounting on size S0 contactors (3RT1023, 3RT1024, 3RT1025 and 3RT1026), is adjustable from 20A to 25A and has phase loss protection...

      $0.00
    • Siemens 3RU2126-1JB0 thermal overload relay Siemens 3RU2126-1JB0 dimensions
      Quick view

      Siemens

      3RU2126-1JB0

       The Siemens 3RU2126-1JB0 overload relay is adjustable from 7 to 10 AMPS, has a manual or automatic reset option and mounts to any 3RT2 size 0 contactor from 9 to 38 AMPS.  This UL rated thermal...

      MSRP: $86.00
      $55.46
      Add to Cart
    • Benshaw RMSO-95-30A overload Benshaw RMSO-95-30A front dimensions
      Quick view

      sku: RMSO-95-30A

      RMSO-95-30A

      Benshaw RMSO-95-30A thermal overload relay with adjustable trip from 24 to 36 AMPS - Mounts onto the new style BENSHAW RC contactors from 75 AMP (RC-75A) to 100 AMP (RC-100A) - Manual or Automatic...

      MSRP: $176.00
      $102.00
      Add to Cart
    Compare Selected