Schneider Electric LRE489 Easy TeSys Protect Thermal Overload Relay 394-630 A Class 10A Relay

The Schneider Electric LRE489 is an Easy TeSys Protect differential thermal overload relay for EasyPact TVS contactors (LC1E500...630), adjustable over 394-630 A with a class 10A trip curve, protecting 3-phase motors from 250 to 355 kW at 400 V with phase-unbalance detection and a 1NO+1NC trip contact.

Technical Specifications

Certifications & Standards

• CB Scheme
• CCC
• CE
• EAC
• IEC 60947-1
• IEC 60947-4-1
• IEC 60947-5-1
• GB/T 14048.1

Selection Notes

Set the 394-630 A dial to the motor's actual full-load current for the from 250 to 355 kW range at 400 V; the recommended 1000 A gG / 630 A aM short-circuit backup must be sized before installation since this relay, like the GV2 L and GV3 L circuit-breaker combinations it is designed alongside, has no internal short-circuit withstand rating of its own. Differential (phase-unbalance) detection trips the relay on a single-phasing fault ahead of the class 10A thermal curve, and the 1NO+1NC trip contact wires directly into the EasyPact TVS contactor's control circuit for automatic disconnection.