Schneider Electric LRD21L

The thermal overload relay features a thermal setting adjustment range from 12 to 18 A, providing crucial motor protection for applications up to 7.5 kW at 400 V. With a tripping class of 20 and integrated phase unbalance detection, it ensures reliable performance in various conditions. The unit is compatible with TeSys D contactors and can be directly mounted for compact configurations.

Key operational features include manual test and reset buttons, an automatic reset function, and trip signaling through auxiliary contacts and a flag indicator. It is designed to withstand ambient temperatures ranging from -20 to 60 °C without derating, which enhances its usability in diverse environments.

This device is certified according to multiple standards, including IEC, UL, and CSA, ensuring compliance with global safety requirements. The thermal overload relay's compact dimensions of 45 mm in width and a weight of 0.144 kg facilitate its integration into existing systems.

For enhanced functionality, it supports various terminal connections and can be complemented with terminal blocks and remote control devices. The Designation Code for this relay is LRD21L, signifying its model in the TeSys Deca range.