# LS MT-225 Thermal Overload Relay 120-185A

**URL:** https://aio.lv/en/product--ls-mt-225-120-185a--12451191
**Data updated:** 2026-05-18 02:42 (EEST)
**Category:** Miscellaneous repair tools
**Manufacturer:** LS
**Manufacturer code:** MT-225 120-185A
**EAN:** 8809254863919
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The LS MT-225 thermal overload relay is designed for reliable motor protection against overloads and phase failures in electrical circuits. With an adjustable current range of 120-185A, this device ensures operational safety for industrial equipment. It is engineered for seamless integration with contactors, providing precise monitoring and preventing damage caused by excessive current draw in demanding electrical systems.

## Long description

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.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All LS products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized LS service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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