Overload Relays

Overload relays protect motors from overheating and excessive current by interrupting the circuit when abnormal load conditions occur. They are typically installed directly beneath a contactor as part of a motor starter assembly. Kent Electrical Supply provides thermal and electronic overload relays from Schneider (LRD/LRN), Siemens (3RB2), and Eaton (XTOE), covering a full range of motor FLA ratings for pumps, compressors, conveyors, and industrial machines.

Common Applications

  • Motor starter protection

  • HVAC compressors and blower motors

  • Pumps and fans

  • Conveyor and material handling systems

  • Industrial automation

AEO-Friendly FAQs

Q: How do I choose the right overload relay for my motor?
A: Match the overload’s amp range to the motor’s full-load amps and ensure it fits the corresponding contactor frame size.

Q: What’s the difference between thermal and electronic overload relays?
A: Thermal overloads use bimetal elements; electronic overloads provide higher accuracy and better phase-loss protection.

  • Eaton XTOE020CCS overload relay Eaton XTOE020CCS front dimensions

    Eaton XTOE020CCS

    Eaton XTOE020CCS electronic overload relay that is adjustable from 4 to 20 AMPS and mounts to any frame C contactor from 18 to 38 AMPS. This next generation solid state overload relay provides accurate and reliable motor protection with multiple class...

    MSRP: $171.87
    $130.65
    Add to Cart
  • WEG RW27-1D3-D063 overload relay WEG RW27-1D3-D063 front dimensions

    RW27-1D3-D063

    The RW27-1D3-D063 is a three phase overload relay that is adjustable from 4 to 6.3 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 RW67-1D3-U050 overload relay WEG RW67-1D3-U050 front dimensions

    RW67-1D3-U050

    The RW67-1D3-U050 is a three phase overload relay with adjustments from 32 to 50 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: $94.00
    $60.60
    Add to Cart
  • Allen Bradley 193-1EFFD overload relay Allen Bradley 193-1EFFD side label

    193-1EFFD

    The Allen Bradley 193-1EFFD is a robust electronic overload relay designed to provide precise motor protection in various industrial settings. This relay is adjustable from 20 to 100 AMPS, offering flexibility for different motor sizes and...

    MSRP: $157.34
    $149.13
    Add to Cart
  • Eaton C306DN3 overload base Eaton C306DN3 side label

    C306DN3

    Eaton C306DN3 Overload Relay – 32 AMP, 3-Pole, NEMA Size 00/0 Looking for a reliable overload protection solution for your motor control system? The Eaton C306DN3 is a factory-new, 3-pole thermal overload relay rated for up to 32 AMPs. Designed...

    MSRP: $316.14
    $144.77
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  • Eaton XTOE045DCS overload relay Eaton XTOE045DCS front dimensions

    Eaton XTOE045DCS

    Eaton XTOE045DCS electronic overload relay that is adjustable from 9 to 45 AMPS and mounts to any frame D contactor from 40 to 65 AMPS. This next generation solid state overload relay provides accurate and reliable motor protection with multiple class...

    MSRP: $255.56
    $186.29
    View Details
  • Allen Bradley 193-1EFED overload relay Allen Bradley 193-1EFED side label

    193-1EFED

    The Allen Bradley 193-1EFED is an electronic overload that is adjustable from 5.4 to 27 AMPS, has selectable trip class ratings from 10 to 30, and directly mounts to any 100-C30, 100-C37, 100-C43 or 100-C55 3 pole IEC rated contactor.  Each overload...

    MSRP: $157.34
    $149.13
    Add to Cart
  • WEG RW117-1D3-U112 overload relay

    RW117-1D3-U112

    The RW117-1D3-U112 is a three phase overload relay with adjustments from 90 to 112 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 RW27-2D3-U023 overload relay WEG RW27-2D3-U023 side

    RW27-2D3-U023

    The RW27-2D3-U023 is a three phase overload relay that is adjustable from 15 to 23 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
    $35.83
    Add to Cart
  • Eaton XTOE045CCS overload relay Eaton XTOE020CCS front dimensions

    Eaton XTOE045CCS

    Eaton XTOE045CCS electronic overload relay that is adjustable from 9 to 45 AMPS and mounts to any frame C contactor from 18 to 38 AMPS. This next generation solid state overload relay provides accurate and reliable motor protection with multiple class...

    MSRP: $195.30
    $142.37
    Add to Cart
  • WEG RW27-1D3-U004 overload relay WEG RW27-1D3-U004 front dimensions

    RW27-1D3-U004

    The RW27-1D3-U004 is a three phase overload relay that is adjustable from 2.8 to 4 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 RW117-1D overload relay

    RW117-1D

    The RW117-1D is a three phase overload relay with adjustments ranging from 63 up to 112 AMPS (choose specific AMP range above). This thermal overload has phase loss protection which trips when a phase is lost thus protecting the motor from...

    MSRP: $192.00
    $96.71
    Choose Options