Best Overload Relays of 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
Top 10 Overload Relays
Schneider Electric DPER10 TeSys Thermal Overload Relay
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.
BlueStars WR07X10097 Relay Assembly
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.
GE WR08X22874 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.
Walfront NR2-93 Overload Relay
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.
SWJDSSSSPBTLPYSL QP2-4.7 Starter Relay Set
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.
NR2-93 Thermal Overload Relay for Motor Protection
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.
YWBL-WH NR2-25 Overload Relay
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.
Velodi Refrigerator/Freezer Overload Relay Kit
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.
Schneider Electric TeSys LRD16
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.
Vikye BR2-25 7A-10A 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.
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.
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.

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.