Upgrading from TR250 to TR640IP & TR660IP

For decades, the TR250 temperature relay has provided reliable protection for transformers, motors and industrial systems worldwide. With the increasing demand for digitalization, remote access and Industry 4.0 capabilities, modern applications require additional functionality.

The new TR640IP and TR660IP temperature relays combine proven temperature monitoring with modern communication features, intuitive operation and simplified commissioning. They provide a future-ready solution for replacing existing TR250 installations while reducing installation and maintenance effort.

The upgrade offers users more than just a new device: it provides greater transparency, easier operation and improved flexibility for future system requirements.

Simple Installation and Fast Commissioning

The TR640IP and TR660IP were developed with practical installation requirements in mind.

Clearly labelled terminals and a user-friendly device concept simplify wiring and commissioning. Flexible sensor configurations allow the relays to be adapted easily to different applications without unnecessary effort.

This reduces installation time and minimizes potential sources of error during setup.

For retrofit projects, the new IP models offer a straightforward path from proven temperature monitoring to modern digital solutions.

Intuitive Operation and Efficient Maintenance

Configuration is quick and convenient via the integrated colour display or directly through the web interface using a standard browser.

Instead of complex adjustments or extensive documentation, users can configure all relevant parameters clearly and efficiently.

During operation, the relays continuously monitor connected temperature sensors and clearly indicate critical conditions. This reduces manual inspection effort and helps maintenance teams identify problems at an early stage.

Ready for Industry 4.0

With integrated communication capabilities, the TR640IP and TR660IP are prepared for modern automation environments.

Network connectivity, firmware updates and interfaces such as Modbus RTU (TR660IP) enable easy integration into existing systems and provide access to valuable measurement data.

This allows temperature information to become part of higher-level monitoring concepts and supports the transition toward connected industrial processes.

A Smart Upgrade for Existing Installations

Replacing a TR250 with a TR640IP or TR660IP means upgrading from reliable temperature protection to a modern monitoring solution.

Users benefit from:

• Faster installation and commissioning
• Intuitive parameterization
• Reduced maintenance effort
• Improved transparency through digital communication
• Long-term flexibility for future requirements

The TR640IP and TR660IP combine proven temperature monitoring with modern technology – providing a simple and reliable way to prepare existing and new industrial installations for the future.