The LS MT-225 thermal overload relay is a high-performance protective device engineered to safeguard industrial electric motors from the risks of overloads and phase failures. Designed for precision and reliability, this relay monitors current flow within electrical circuits, ensuring that equipment operates within safe parameters. Its robust construction and adjustable current range make it an essential component for maintaining the longevity and operational integrity of heavy-duty machinery in demanding industrial environments.
Advantages
This thermal overload relay offers exceptional protection by providing a highly accurate response to current fluctuations, which helps prevent motor overheating and potential mechanical failure. The adjustable current range allows for precise calibration to match the specific requirements of the connected motor, ensuring optimal performance without unnecessary tripping. Its seamless integration with compatible contactors simplifies the installation process and enhances the overall efficiency of the motor control system, providing a dependable solution for complex electrical setups.
Suitable for
- Industrial motor control systems
- Protection of heavy-duty machinery
- Electrical circuits requiring phase failure monitoring
- Integration with contactors in control panels
This device may not be suitable for applications requiring protection against short-circuit currents, as it is specifically designed for thermal overload and phase loss. It is also not intended for use in environments that exceed the specified temperature or humidity ratings, which could affect the accuracy of the thermal sensing mechanism.
Key specifications
- Adjustable current range: 120-185A
- Function: Thermal overload and phase failure protection
- Compatibility: Designed for direct mounting to contactors
- Application: Industrial motor protection
To use the LS MT-225, mount the relay directly onto the corresponding contactor according to the manufacturer's installation guidelines. Once installed, calibrate the current setting dial to the rated full-load current of the motor being protected. Ensure that all electrical connections are tightened securely to prevent resistance and heat buildup. After installation, perform a test run to verify that the relay operates correctly under normal load conditions.
What to consider before purchase
- Verify that the motor's full-load current falls within the 120-185A range
- Ensure compatibility with the specific contactor model being used
- Check the environmental conditions of the installation site
- Confirm that the relay meets the safety standards required for your specific application
For optimal performance and safety, always ensure the relay is calibrated correctly to the motor's nameplate current and periodically inspect all terminal connections for signs of wear or looseness.
