The Square D LRD08 thermal overload relay protects three-phase motors in the 2.5–4 A range by monitoring current across all phases and opening the circuit on sustained overload or phase failure. It belongs to the TeSys LRD series, mounts directly beneath compatible IEC contactors such as the LC1D09 and LC1D12, and offers both manual and automatic reset options with Class 10A trip characteristics. This compact unit installs in motor control panels, pump starters, and conveyor drives where precise current-based protection prevents overheating without nuisance tripping under normal starting loads.
