Refrigerator Overload Relay QD-7
- Available in sizes 1P, 2P and 1.5P.
- Resists temperatures up to 105 ℃
- Sealed protection prevents contamination and ensures durability.
- Customizable features allow you to adapt your refrigerator to your needs.
Refrigerator Overload Relay from A Manufacturer Focused on Stability
If you are concerned about safety issues related to your refrigeration system, that’s where LCTC refrigerator overload relay comes in. Its function is to protect the most critical component: the compressor.
overload relay for refrigerators are generally used in equipment requiring compressor refrigeration. You’ll find it in a wide range of applications, for example, refrigerators, freezers, air conditioners, water dispensers with refrigeration function and ice machines, in a typical Home appliance industry setup very common.
LCTC has multiple international professional certifications. At the same time, we guarantee the quality of our products while offering competitive prices. If you have any questions, you can send us an inquiry at any time, and we will answer you as soon as possible.
Features of Refrigerator Overload Relay
The advantages of the overload relay for refrigerator are obvious.
As soon as a malfunction or overheating of the circuit is detected, it can immediately cut off the power supply to protect the equipment and lines, thus reacting very quickly.
Once the problem is solved, you’ll notice that the refrigerator overload relay will restart automatically after cooling, without manual intervention.
The LCTC refrigerator overload relay has a simple structure and circuit, is not easily damaged, is not affected by radio waves or the environment, and has an extremely low failure rate.
The LCTC refrigerator overload relay can automatically cut off the power supply in the event of a circuit failure without the need for a control panel or additional software, making it particularly suitable for unattended environments.
Steady Protection is Provided by the LCTC Refrigerator Overload Relay
The refrigerator overload relay is mainly used to protect against over currents and overheating. In case of abnormal current, the system will react immediately and quickly cut off the power supply to avoid damaging the circuit. You’ll notice that when the compressor temperature becomes too high due to the ambient temperature or the operating temperature and reaches a certain threshold, it will also automatically stops to protect the compressor. The LCTC overload relay for refrigerator combines sensitivity and stability, providing continuous and stable safety protection for the compressor.
Refrigerator Overload Relay with Easy Installation and Compatibility
During installation, It does not require complex wiring, this is usually a plug-in terminal that connects directly to the compressor without the need for welding or screws. LCTC refrigerator overload relays are compatible with almost all compressor models and cover a wide range of electrical parameters. In addition, we can customize it according to your needs so that it plays a more important role.
When the compressor frequently emits a clicking sound or repeatedly shuts off, overheats, and fails to restart after cooling down, the refrigerator’s overload relay may be faulty.
When troubleshooting, first disconnect the power supply, then check for obvious signs of burns or cracks; you may also use a multimeter to perform a diagnostic test. If the device continues to fail to conduct under normal conditions or does not recover after cooling, it may need to be replaced.
In case of a refrigerator overload relay failure, the following situations may occur:
The compressor fails to start or starts intermittently.
Frequent clicking noises may indicate that the refrigerator’s overload relay is tripping or resetting repeatedly.
Compressor overheating may be caused by insufficient protection or abnormal operating conditions.
The compressor repeatedly stops after operating for a short period.
The compressor cannot be restarted after cooling.
However, these issues may also be caused by other factors, such as the starter relay, capacitor, power supply, or the compressor itself. It is recommended to check them one by one.
When the refrigerator’s overload relay detects excessive current or temperature, it activates to protect the compressor.
Common causes of excessive current or excessively high temperatures include:
Insufficient ventilation or excessive load can cause the compressor to overheat.
A faulty, worn-out, or damaged capacitor in the refrigerator overload relay may prevent the proper starting of the injection molding press.
A low or unstable power supply causes excessive inrush current.
A compressor malfunction has caused an abnormal increase in starting power.
First and foremost, it is important to ensure that the parameters match the compressor specifications. Key factors to consider include the compressor model, rated voltage, operating current, overload relay trip current, terminal configuration, installation method, as well as the compressor application scenario, such as refrigerators, freezers, ice makers, etc.
Choosing an appropriate overload relay for the refrigerator helps protect the compressor, ensuring stable operation and extending its lifespan.
LCTC offers a variety of overload relays for refrigerators with different rated currents and configurations, compatible with various single-phase sealed compressors.
They are not compatible with all compressors. To ensure protection, the electrical and mechanical specifications must match. Using a compressor overload relay for an incompatible refrigerator will not only fail to protect the compressor but may also damage it. Therefore, make sure to select a refrigerator overload relay that matches the compressor’s specifications.
An overload relay and a start relay serve different functions in a refrigerator compressor starting system.
A start relay interrupts the starter winding connection during startup to facilitate compressor activation; once the compressor is started, the start relay automatically disconnects the winding.
The number of pins does not indicate better performance or higher protection. The main differences lie in the terminal configuration and the method of connection to the compressor.
1-pin overload relay uses a simplified connection scheme and is generally designed for a specific compressor model.
2-pin overload relays offer more connection options and are commonly found in household refrigeration appliances such as freezers and refrigerators.
3-pin overload relay is designed to be compatible with three-terminal (C, R, S) compressor configurations and is widely used in single-phase sealed compressors.
Yes, the LCTC refrigerator overload relay supports commercial refrigeration equipment such as large freezers, beverage refrigerators, refrigerated display cases, ice makers, etc.
Additionally, it is also applicable to household refrigeration appliances such as freezers and refrigerators.
Yes, generally, it is plug-and-play. In most cases, you don’t need extra tools to install it.
Yes, LCTC provides OEM/ODM customization services. We can customize a refrigerator overload relay according to your requirements.
You can share your specific requirements, such as electrical parameters, compressor model, and particular application scenarios, and we will recommend the most suitable compressor protection solution while providing you with professional technical support throughout the entire collaboration process.