- True Temperature-Based Thermal Overload Protection
Eliminate false tripping, especially during cyclic overload operations. The release motor capability is unavailable with traditional overload relays.
- Comprehensive Start Reports and Trends
Track motor performance during the critical starting period with complete motor start reports and 30-day average motor start trending. Only SEL offers this valuable tool for tracking motor performance.
- Option Cards Add Functionality
Customize the relay to suit your particular protection and control applications with optional voltage, I/O, and communications cards.
- Increase Operating Time by Using Complete Reporting
Troubleshoot motor/process problems using valuable, stored information about motors and processes from motor statistics, oscillograms, event reports, and sequential events records.
- Extensive Communications and Software Capabilities
Communicate seamlessly with built-in SEL ASCII Fast Meter, Fast Operate, and Fast SER protocols, and EIA-232 as standard. Add optional Modbus protocol for connecting to your digital control system. Quickly and easily set the SEL-749M with the included Microsoft Windows-based acSELerator QuickSet SEL-5030 Software.
- Compact, Ruggedized Hardware
Mount this UL/IEC short-mounting-depth relay in any motor control center.