The Schneider Electric LR9F81 is an electronic thermal overload relay from the TeSys LRF series, engineered for robust motor protection in demanding industrial environments. This relay is designed to safeguard motors against overcurrent and phase loss conditions, ensuring operational continuity and preventing costly damage. Its advanced electronic design offers precise tripping characteristics and reliable performance.

Technical details

• Series: TeSys LRF
• Thermal Setting Range: 380-630 A
• Motor Power Compatibility (at 400V): 250-355 kW
• Tripping Class: Selectable (refer to manufacturer datasheet for specific class options)
• Protection Functions: Overload, phase loss, manual/automatic reset
• Mounting Type: Designed for direct mounting onto compatible Schneider Electric contactors (refer to contactor compatibility chart)
• Operating Temperature Range: -25°C to +70°C (refer to manufacturer datasheet for precise limits)
• Ingress Protection Rating: IP20 (refer to manufacturer datasheet for specific enclosure requirements)

Applications & compatibility

This overload relay is suitable for a wide range of motor control applications, including pump drives, fan systems, conveyor belts, and general machinery in sectors such as manufacturing, water treatment, and material handling. It is designed to integrate seamlessly with Schneider Electric TeSys contactors for complete motor starter solutions.

Available from Industrial Automation Co as new, refurbished, or surplus stock, backed by a 2-year warranty with same-day shipping on in-stock items. Request a quote for the Schneider LR9F81 or contact our technical team for cross-reference assistance with compatible TeSys LRF components.