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.

  • WEG RW117-1D3-U080 overload relay

    RW117-1D3-U080

    The RW117-1D3-U080 is a three phase overload relay with adjustments from 63 to 80 AMPS. This thermal overload has phase loss protection which trips when a phase is lost thus protecting the motor from irreparable damage and costly repairs. Class 10...

    MSRP: $192.00
    $96.71
    Add to Cart
  • WEG RW117-1D3-U097 overload relay

    RW117-1D3-U097

    The RW117-1D3-U097 is a three phase overload relay with adjustments from 75 to 97 AMPS. This thermal overload has phase loss protection which trips when a phase is lost thus protecting the motor from irreparable damage and costly repairs. Class 10...

    MSRP: $192.00
    $123.76
    Add to Cart
  • WEG RW27-1D3-U010 overload relay WEG RW27-1D3-U010 front dimensions

    RW27-1D3-U010

    The RW27-1D3-U010 is a three phase overload relay that is adjustable from 7 to 10 AMPS. This thermal overload has phase loss protection which trips when a phase is lost thus protecting the motor from irreparable damage and costly repairs. Class 10...

    MSRP: $50.00
    $32.24
    Add to Cart
  • WEG RW67-2D3-U070 overload relay WEG RW67-2D3-U070 front dimensions

    RW67-2D3-U070

    The RW67-2D3-U070 is a three phase overload relay with adjustments from 57 to 70 AMPS. This thermal overload has phase loss protection which trips when a phase is lost thus protecting the motor from irreparable damage and costly repairs. Class 10...

    MSRP: $112.00
    $71.52
    Add to Cart
  • Benshaw SPO-22-6A5 Overload Relay

    SPO-22-6A5

    Benshaw SPO-22-6A5 Bimetallic Class 10 3 pole overload with a range from 5 to 8 AMPS and mounts directly to the RSC-9, RSC-12, RSC-18 and RSC-22 contactor in any coil voltage.  This 3 phase thermal overload relay comeS with an adjustable dial for...

    MSRP: $48.00
    $26.39
    Add to Cart
  • Benshaw SPO-22H-19A overload  relay

    SPO-22H-19A

    Benshaw SPO-22H-19A Bimetallic Class 20 3 pole overload with a range from 16 to 22 AMPS and mounts directly to the RSC-9, RSC-12, RSC-18 and RSC-22 contactor in any coil voltage.  This 3 phase thermal overload relay comes with an adjustable dial for...

    $0.00
  • Benshaw SPO-40-19A Overload Relay

    SPO-40-19A

    Benshaw SPO-40-19A Bimetallic Class 10 3 pole overload with a range from 16 to 22 AMPS and mounts directly to the RSC-32 and RSC-40 contactors in any coil voltage.  This 3 phase thermal overload relay comes with an adjustable dial for easily setting...

    MSRP: $55.00
    $33.08
    Add to Cart
  • Eaton XTOB032CC1DP overload relay Eaton XTOB024CC1DP dimensions

    XTOB032CC1DP

    The Eaton XTOB032CC1DP thermal overload relay is adjustable from 24 to 32 AMPS, has a manual or automatic reset and mounts to any 3 pole C25D definite purpose contactor from 15 to 40 AMPS.  Each overload relay provides phase loss sensitivity, comes...

    MSRP: $146.00
    $76.55
    Add to Cart
  • Eaton XTOBP16BC1 Overload Relay Eaton XTOBP16BC1 Dimensions

    XTOBP16BC1

    Eaton XT0BP16BC1 thermal overload relay adjustable from 0.10 to 0.16 AMPS with 1 N.O and 1 N.C. auxiliaries, manual and automatic reset and phase loss protection. These thermal overloads offer Class 10 tripping (trips in 10 seconds or less) and are...

    MSRP: $131.42
    $48.07
    Add to Cart
  • Eaton/Moeller ZB12-0.24 overload relay Eaton/Moeller ZB12-0.24 front dimensions

    ZB12-0,24

    Eaton/Moeller ZB12-0.24 thermal overload relay that is adjustable from 0.16 to 0.24 AMPS and mounts to any DILM7, DILM9 or DILM12 3-pole contactor. This 3 phase overload relay comes with manual and automatic reset, phase loss sensitivity and a set of...

    MSRP: $144.00
    $42.68
    Add to Cart
  • Eaton/Moeller ZB65-16 overload relay Eaton/Moeller ZB65-16 front dimensions

    ZB65-16

    Eaton/Moeller ZB65-16 thermal overload relay that is adjustable from 10 to 16 AMPS and mounts to any DILM40, DILM50 or DILM65 3-pole contactor. This 3 phase overload relay comes with manual and automatic reset, phase loss sensitivity and a set of...

    MSRP: $200.00
    $71.89
    Add to Cart
  • Lovato 11RF915 overload relay Lovato 11RF915 dimensions

    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 sensitivity), manual reset option and screw terminals for...

    MSRP: $59.51
    $44.27
    Add to Cart