Best Overload Relays of 2025

Brian Howie Avatar
Brian Howie
Last Updated: Jan 7, 2025

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Overload relays are an essential component in protecting motors from damage caused by excess currents. These relays are designed to detect overloads and short circuits in the motor and disconnect the power supply to prevent further damage. They work by monitoring the current flow in the motor and tripping when the current exceeds a pre-set level. Overload relays are available in different types, including thermal, electronic, and magnetic, each with its own unique features and benefits. They are widely used in various industrial applications, including HVAC systems, conveyors, pumps, and compressors. Overall, overload relays are an integral part of motor protection, ensuring safe and efficient operation of machinery.

At a Glance: Our Top Picks

Schneider Electric DPER10 TeSys Thermal Overload Relay Cover #TOP 1
Schneider Electric DPER10 TeSys Thermal Overload Relay
ftb score rating icon 9.9
BlueStars WR07X10097 Relay Assembly Cover #TOP 2
BlueStars WR07X10097 Relay Assembly
ftb score rating icon 9.8
GE WR08X22874 Relay and Overload Kit Cover #TOP 3
GE WR08X22874 Relay and Overload Kit
ftb score rating icon 9.6

Top 10 Overload Relays

#TOP 1

Schneider Electric DPER10 TeSys Thermal Overload Relay

Schneider Electric
DPER10
4-6A
Schneider Electric DPER10 TeSys Thermal Overload Relay Cover
Schneider Electric DPER10 Easy TeSys Thermal Overload Relay with Manual/Automatic Reset, Screw Clamp Terminals | Used with Air Conditioner, Heat Pump, HVAC, AC Compressor and More, 4-6Amps

The Schneider Electric DPER10 TeSys Thermal Overload Relay is a high-quality overload relay that offers excellent performance, flexibility, and reliability. It is easy to select and install at an optimized budget, and it can help reduce installation time. This relay provides robust performance for common applications and has the flexibility to add motor disconnects to meet NEC requirements.

What We Like
Easy to select and install
Good performance and reliability
Flexible and adaptable to meet various requirements
#TOP 2

BlueStars WR07X10097 Relay Assembly

WR07X10097
BlueStars WR07X10097 Relay Assembly Cover
Ultra Durable WR07X10097 Relay and Overload Assembly Replacement Part by BlueStars - Exact Fit for GE Refrigerators - Replaces 1265640 AP4300623 PS1766101 513604045

The BlueStars Relay Assembly is an essential replacement part for your GE refrigerator. Before purchasing, you can verify if it fits your model by providing the model number. This part offers an affordable solution to repair your refrigerator, helping you save both time and money. You can safely store food while the refrigerator is unplugged for installation, ensuring no spoilage occurs. Designed for easy installation, it fits numerous GE models and meets OEM standards for durability and performance, making it a reliable choice if your refrigerator won’t start.

What We Like
Cost-effective repair solution
Easy installation process
Compatible with many GE models
Durable, high-quality materials
#TOP 3

GE WR08X22874 Relay and Overload Kit

GE
WR08X22874
GE WR08X22874 Relay and Overload Kit Cover
GE WR08X22874 Refrigerator Relay and Overload Kit

The GE Relay and Overload Kit is a genuine part designed for refrigerators. It connects directly to the compressor, ensuring that the compressor motor starts efficiently. This kit is compatible with select GE and Hotpoint refrigerator models, providing a reliable solution for your appliance needs. Manufactured with high-quality materials, this original part guarantees durability and performance. When you choose this kit, you can feel confident knowing you are using a component that meets strict specifications, making your repairs and maintenance easier and more effective.

What We Like
Genuine OEM part
Compatible with multiple brands
High-quality materials
Easy installation
#TOP 4

Walfront NR2-93 Overload Relay

Walfront
Walfront72pe69q0ax-01
Walfront NR2-93 Overload Relay Cover
NR2-93 50-60hz Overload Relay Protective Devicem Thermal Overload Relay Thermal Protector for Protecting the Phase Break (30A - 40A)

The Walfront Relay Protector is a versatile overload relay suitable for power systems with rated isolation voltage up to 690V and circuit 50-60hz. It serves as an overload protection for long-term maintenance of motors, providing phase break protection when the electric motor is overloaded. With different mechanisms and temperature compensation, this relay offers convenience with features like manual and automatic reset, trip indication, test button, and stop button, making it easy to operate and ensuring efficient motor protection.

What We Like
Versatile overload protection
Phase break protection
Convenient operation features
#TOP 5

SWJDSSSSPBTLPYSL QP2-4.7 Starter Relay Set

SWJDSSSSPBTLPYSL
QD20240302
SWJDSSSSPBTLPYSL QP2-4.7 Starter Relay Set Cover
QP2-4.7Starter Relay and Overload 1 Pin Refrigerator Starter Relay and 6750C-0005P Refrigerator Overload Protector(2 Pieces in Total)Mini Refrigerator Parts Compatible with LG Refrigerator Compressor

The SWJD QP2-4.7 Relay Set is designed to enhance the performance of your mini refrigerator. The starter relay is compatible with various brands and helps prevent your refrigerator compressor from overheating, ensuring optimal cooling. It includes a universal PTC starting relay, making installation quick and easy for you. This set comes with both a 4.7 Ohm relay and an overload protector, allowing you to replace worn-out parts efficiently. With this reliable solution, you can enjoy a cooler environment while saving time and energy in repairs.

What We Like
Compatible with multiple brands
Easy installation and replacement
Includes overload protector
Prevents compressor overheating
#TOP 6

NR2-93 Thermal Overload Relay for Motor Protection

Walfront
Wal frontuid5z6p3ek-02
37-50A
NR2-93 Thermal Overload Relay for Motor Protection Cover
3 Phase Thermal Overload Relay, Thermal Overload Relay, NR2-93 Thermal Overload Relay Thermal Protector Overload Phase Break

The NR2-93 Thermal Overload Relay with 37-50A range is a reliable overload protection mechanism for your long-term and indirect long-term service motor. It can protect the phase break of the electric motor from overloading, and has different mechanisms with temperature compensation. With phase break protection, manual and automatic reset, trip indication, test button and stop button, it can be used in power systems with rated isolation voltage up to 690V and circuits of 50-60Hz.

What We Like
Reliable overload protection for long-term and indirect long-term service motor
Protects the phase break of the electric motor from overloading
Can be used in power systems with rated isolation voltage up to 690V and circuits of 50-60Hz
#TOP 7

YWBL-WH NR2-25 Overload Relay

YWBL-WH
YWBL-WHx2bqock9en-09
17-25A
YWBL-WH NR2-25 Overload Relay Cover
NR2-25 Electric Overload Relay Adjustable Motor Thermal 50-60hz(17-25A)

The YWBL-WH Overload Relay is a versatile device with multiple functions tailored to your needs. It features phase break detection, manual and automatic reset options, temperature compensation, trip indication, and more. These functions offer you added convenience and peace of mind. This relay can serve as overload protection for your motors, ensuring their longevity and optimal performance. With various mechanisms and temperature compensation, this relay operates efficiently. Suitable for power systems with up to 690V insulation voltage and 50-60hz circuits, it is a reliable choice for different applications.

What We Like
Versatile Functions
Efficient Performance
High-Quality Material
#TOP 8

Velodi Refrigerator/Freezer Overload Relay Kit

4387913
Black
Velodi Refrigerator/Freezer Overload Relay Kit Cover
Refrigerator/Freezer Overload Relay kit for 4387913 7020935 4387766 4387836

The Velodi Refrigerator/Freezer Overload Relay Kit is a must-have for your appliance. This kit is designed for models 4387913, 7020935, 4387766, and 4387836. With a current rating of 4.7 Amps, it ensures efficient and reliable operation of your refrigerator or freezer. The coil voltage of 120 Volts guarantees optimal performance. The contact current rating of 4.7 Ohm further enhances the functionality of this kit. By installing this Velodi Overload Relay Kit, you can rest assured that your appliance will run smoothly, preventing any potential breakdowns. Upgrade your refrigerator or freezer with this high-quality kit and enjoy peace of mind knowing your food will stay fresh and cool.

What We Like
Efficient operation
Reliable performance
Prevents breakdowns
#TOP 9

Schneider Electric TeSys LRD16

Schneider Electric
LRD16
Schneider Electric TeSys LRD16 Cover
NEW TeSys LRD thermal overload relays LR-D16 LRD16 9-13A Class 10A

Introducing the Schneider Electric TeSys LRD16, a reliable thermal overload relay designed to protect your equipment. The LRD16 offers precise overload protection, ensuring your devices stay safe from electrical faults. With its Class 10A rating, this relay provides accurate monitoring of currents, preventing damage to your machinery. Schneider Electric's LRD16 is a top choice for overload relays, offering quality and peace of mind for your electrical systems.

What We Like
Precise overload protection
Class 10A rating
Quality Schneider Electric brand
#TOP 10

Vikye BR2-25 7A-10A Thermal Overload Relay

Vikye
Vikye0tmu1a4qe6
Vikye BR2-25 7A-10A Thermal Overload Relay Cover
Thermal Overload Relay, CPN BR2-25 7A-10A Electric Thermal Overload Relay 7A-10A Electric Adjustable Motor Protection Thermal Overload Relay

Vikye Thermal Relay is a reliable solution for protecting your electric motor from overload. It operates in circuits of 50-60hz with a rated insulation voltage of 690V and a current range of 7-10A. The relay offers stability with its different mechanism and temperature compensation. With phase break protection, manual and automatic reset options, temperature compensation, trip indication, test button, and stop button, this relay ensures the safety and smooth functioning of your motor. It is versatile and essential for maintaining the efficiency of your motor operations.

What We Like
Stable Performance
Wide Usage
Multiple Functions
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What are 2 types of overload relays?

There are two types of overload relays: thermal overload relays and magnetic overload relays. These relays are used to protect motors and motor branch circuits from excessive heat caused by overload conditions.

2. Where are overload relays used?

Overload relays are used in motor starters to protect the motor, motor branch circuit, and its components from excessive heat due to overload conditions. They monitor the current flowing in the circuit and help prevent damage to the motor and its associated components.

3. What causes overload relay failure?

Overload relay failure can be caused by various factors, including short circuits in the wiring, motor failure, motor overload, motor overheating, and malfunctioning of the overload relay itself. These issues can lead to excessive current flow and tripping of the overload circuit breaker.

4. What are the disadvantages of overload relays?

Thermal overload relays have a few disadvantages. They are not designed with direct breaking functions and require additional switching and electrical protection devices to disconnect a live circuit. Additionally, most thermal overload relays have a slower operation compared to other protection devices.

5. How do you fix an overload relay?

To fix an overload relay, you can try the following steps: remove or adjust the overload, check for mechanical overload on the motor, ensure the proper voltage is available at the motor, inspect for loose connections or single phasing, adjust or replace the relay if necessary, and tighten any loose connections. It is also important to test the actual trip point of the relay and replace it if needed.

Editor's Notes

During our overload relay research, we found 24 overload relay products and shortlisted 10 quality products. We collected and analyzed 4,799 customer reviews through our big data system to write the overload relays list. We found that most customers choose overload relays with an average price of $20.29.

The overload relays are available for purchase. We have researched hundreds of brands and picked the top brands of overload relays, including Schneider Electric, BlueStars, GE, Walfront, SWJDSSSSPBTLPYSL. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

Written by
Brian Howie Avatar

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.