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 11RF933 overload relay Lovato 11RF933 dimensions

    11RF933

    Lovato Electric 11RF933 overload relay adjustable from 2 to 3.3 AMPS and mounts to any BG06, BG09 or BG12 miniature 3-pole contactors. This overload relay has phase loss protection (single phase sensitivity), manual reset option and screw terminals for...

    MSRP: $59.51
    $39.26
    Add to Cart
  • Lovato 11RF95 overload relay Lovato 11RF95 dimensions

    11RF95

    Lovato Electric 11RF95 overload relay adjustable from 3 to 5 AMPS and mounts to any BG06, BG09 or BG12 miniature 3-pole contactors. This overload relay has phase loss protection (single phase sensitivity), manual reset option and screw terminals for easy...

    MSRP: $59.51
    $39.26
    Add to Cart
  • Siemens 3RU1116-0AB0 thermal overload relay Siemens 3RU1116-0AB0 front dimensions

    3RU1116-0AB0

    Siemens 3RU1116-0AB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 0.11A to 0.16A and has phase loss protection. The manual or automatic reset feature on this Sirius...

    $0.00
  • Siemens 3RU1116-0CB0 thermal overload relay Siemens 3RU1116-0CB0 front dimensions

    3RU1116-0CB0

    Siemens 3RU1116-0CB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 0.18A to 0.25A and has phase loss protection. The manual or automatic reset feature on this Sirius...

    $0.00
  • Siemens 3RU1116-0DB0 thermal overload relay Siemens 3RU1116-0DB0 front dimensions

    3RU1116-0DB0

    Siemens 3RU1116-0DB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 0.22A to 0.32A and has phase loss protection. The manual or automatic reset feature on this Sirius...

    $0.00
  • Siemens 3RU1116-0EB0 thermal overload relay Siemens 3RU1116-0EB0 front dimensions

    3RU1116-0EB0

    Siemens 3RU1116-0EB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 0.28A to 0.40A and has phase loss protection. The manual or automatic reset feature on this Sirius...

    $0.00
  • Siemens 3RU1116-0FB0 thermal overload relay Siemens 3RU1116-0FB0 front dimensions

    3RU1116-0FB0

    Siemens 3RU1116-0FB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 0.35A to 0.50A and has phase loss protection. The manual or automatic reset feature on this Sirius...

    $0.00
  • Siemens 3RU1116-0HB0 thermal overload relay Siemens 3RU1116-0HB0 front dimensions

    3RU1116-0HB0

    Siemens 3RU1116-0HB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 0.55A to 0.80A and has phase loss protection. The manual or automatic reset feature on this Sirius...

    $0.00
  • Siemens 3RU1116-0JB0 thermal overload relay Siemens 3RU1116-0JB0 front dimensions

    3RU1116-0JB0

    Siemens 3RU1116-0JB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 0.70A to 1.0A and has phase loss protection. The manual or automatic reset feature on this Sirius...

    $0.00
  • Siemens 3RU1116-0KB0 thermal overload relay Siemens 3RU1116-0KB0 front dimensions

    3RU1116-0KB0

    Siemens 3RU1116-0KB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 0.90A to 1.25A and has phase loss protection. The manual or automatic reset feature on this Sirius...

    $0.00
  • Siemens 3RU1116-1BB0 thermal overload relay Siemens 3RU1116-1BB0 front dimensions

    3RU1116-1BB0

    Siemens 3RU1116-1BB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 1.4A to 2A and has phase loss protection. The manual or automatic reset feature on this Sirius series...

    $0.00
  • Siemens 3RU1116-1GB0 thermal overload relay Siemens 3RU1116-1GB0 front dimensions

    3RU1116-1GB0

    Siemens 3RU1116-1GB0 class 10 thermal overload relay for direct mounting on size S00 contactors (3RT1015, 3RT1016 and 3RT1017), is adjustable from 4.5A to 6.3A and has phase loss protection. The manual or automatic reset feature on this Sirius...

    $0.00