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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.

    • Eaton ZE-0.4 thermal overload Eaton ZE-0.4 front dimensions
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      Moeller Electric

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      sku: ZE-0,4

      ZE-0,4

      Eaton/Moeller ZE-0.4 thermal overload relay that is adjustable from 0.24 to 0.40 AMPS and mounts to any DILEM-10 or DILEM-01 3-pole contactor. This 3 phase overload relay comes with manual and automatic reset, phase loss sensitivity and a set of normally...

      MSRP: $72.00
      $47.63
      Add to Cart
    • Eaton ZE-2.4 thermal overload Eaton ZE-2.4 side dimensions
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      Moeller Electric

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      sku: ZE-2,4

      ZE-2,4

      Eaton/Moeller ZE-2.4 thermal overload relay that is adjustable from 1.6 to 2.4 AMPS and mounts to any DILEM-10 or DILEM-01 3-pole contactor. This 3 phase overload relay comes with manual and automatic reset, phase loss sensitivity and a set of normally...

      MSRP: $72.00
      $47.63
      Add to Cart
    • Siemens 3RU1116-0GB0 thermal overload relay Siemens 3RU1116-0GB0 front dimensions
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      Siemens

      3RU1116-0GB0

      Siemens 3RU1116-0GB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 0.45A to 0.63A and has phase loss protection. The manual or automatic reset feature on this Sirius...

      $0.00
    • Siemens 3RU1116-1FB0 thermal overload relay Siemens 3RU1116-1FB0 front dimensions
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      Siemens

      3RU1116-1FB0

      Siemens 3RU1116-1FB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 3.5A to 5A and has phase loss protection. The manual or automatic reset feature on this Sirius series...

      $0.00
    • Siemens 3RU1126-1GB0 thermal overload relay Siemens 3RU1126-1GB0 front dimensions
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      Siemens

      3RU1126-1GB0

      Siemens 3RU1126-1GB0 class 10 thermal overload relay for direct mounting on size S0 contactors (3RT1023, 3RT1024, 3RT1025 and 3RT1026), is adjustable from 4.5A to 6.3A and has phase loss protection. The manual or automatic reset feature on this...

      MSRP: $72.00
      $50.59
      Add to Cart
    • Siemens 3RU1126-4CB0 thermal overload relay Siemens 3RU1126-4CB0 front dimensions
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      Siemens

      3RU1126-4CB0

      Siemens 3RU1126-4CB0 class 10 thermal overload relay for direct mounting on size S0 contactors (3RT1023, 3RT1024, 3RT1025 and 3RT1026), is adjustable from 17A to 22A and has phase loss protection. The manual or automatic reset feature on this...

      $0.00
    • Siemens 3RU1136-4AB0 thermal overload relay
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      Siemens

      3RU1136-4AB0

      Siemens 3RU1136-4AB0 class 10 thermal overload relay for direct mounting on size S2 contactors (3RT1033, 3RT1034, 3RT1035 and 3RT1036), is adjustable from 11A to 16A and has phase loss protection. The manual or automatic reset feature on this...

      $0.00
    • Siemens 3RU1136-4GB0 thermal overload relay
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      Siemens

      3RU1136-4GB0

      Siemens 3RU1136-4GB0 class 10 thermal overload relay for direct mounting on size S2 contactors (3RT1033, 3RT1034, 3RT1035 and 3RT1036), is adjustable from 36A to 45A and has phase loss protection. The manual or automatic reset feature on this...

      $0.00
    • Siemens 3RU1136-4HB0 thermal overload relay
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      Siemens

      3RU1136-4HB0

      Siemens 3RU Class 10 Thermal Overload Relay for mounting on size S2 contactors (3RT1033, 3RT1034, 3RT1035 and 3RT1036), adjustable from 40A-50A Click here for a PDF file on this Siemens 3RU11 thermal overload relayThe 3RU11 thermal overload relays up to...

      $0.00
    • Siemens 3RU2116-1BB0 thermal overload relay Siemens 3RU2116-1BB0 dimensions
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      Siemens

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      sku: 3RU2116-1BB0

      3RU2116-1BB0

      Siemens 3RU2116-1BB0 3 pole IEC rated thermal overload relay that is adjustable from 1.4 to 2.0 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 3RU2116-1CB0 thermal overload relay Siemens 3RU2116-1CB0 dimensions
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      Siemens

      |

      sku: 3RU2116-1CB0

      3RU2116-1CB0

      Siemens 3RU2116-1CB0 3 pole IEC rated thermal overload relay that is adjustable from 1.8 to 2.5 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 3RU2126-1CB0 thermal overload relay Siemens 3RU2126-1CB0 dimensions
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      Siemens

      3RU2126-1CB0

       The Siemens 3RU2126-1CB0 overload relay is adjustable from 1.8 to 2.5 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 overload relay comes with phase loss...

      MSRP: $86.00
      $55.46
      Add to Cart
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