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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.

    • Lovato 11RF915 overload relay Lovato 11RF915 dimensions
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      Lovato Electric

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      sku: 11RF915

      11RF915

      Lovato Electric 11RF915 overload relay adjustable from 9 to 15 AMP and mounts to any BG06, BG09 or BG12 miniature 3-pole contactors. This overload relay has phase loss protection (single phase...

      MSRP: $59.51
      $44.27
      Add to Cart
    • Siemens 3RU1126-1FB0 thermal overload relay Siemens 3RU1126-1FB0 front dimensions
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      Siemens

      3RU1126-1FB0

      Siemens 3RU1126-1FB0 class 10 thermal overload relay for direct mounting on size S0 contactors (3RT1023, 3RT1024, 3RT1025 and 3RT1026), is adjustable from 3.5A to 5A and has phase loss protection...

      MSRP: $72.00
      $50.59
      Add to Cart
    • Siemens 3RU2126-1DB0 thermal overload relay Siemens 3RU2126-1DB0 dimensions
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      Siemens

      3RU2126-1DB0

       The Siemens 3RU2126-1DB0 overload relay is adjustable from 2.2 to 3.2 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
    • Siemens 3RU2126-1HB0 thermal overload relay Siemens 3RU2126-1HB0 dimensions
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      Siemens

      3RU2126-1HB0

       The Siemens 3RU2126-1HB0 overload relay is adjustable from 5.5 to 8 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
    • Siemens 3RU2136-4RB0 thermal overload relay 3RU2136-4RB0 Side Dimensions
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      Siemens

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      sku: 3RU2136-4RB0

      3RU2136-4RB0

      Siemens 3RU2136-4RB0 thermal overload relay for mounting on Sirius 3RT203 size S2 contactors (3RT2038) and is adjustable from 70A-80A. This Class 10 overload (trips in 10 seconds or less) has phase...

      MSRP: $310.00
      $158.24
      Add to Cart
    • Siemens 3RU2146-4MB0 overload relay Siemens 3RU2146-4MB0 front dimensions
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      Siemens

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      sku: 3RU2146-4MB0

      3RU2146-4MB0

      Siemens 3RU2146-4MB0 Class 10 thermal overload relay for mounting on new Sirius 3RT204 size S3 contactors (3RT2045, 3RT2046, and 3RT2047) and is adjustable from 80 to 100 AMPS.  This Siemens Sirius...

      MSRP: $290.00
      $154.90
      Add to Cart
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