Product pictures Product Overview: Fuji TKC90NA1540 Parameter Specification Brand Fuji Electric Part No. TKC90NA1540 Type Thermal Overload Relay Application 3-Phase Motor Overload / Phase-Loss Protection Application & Fault Scenarios System: Fuji SC-90 contactor + TKC90 thermal relay combination, used in motor starters for pumps, compressors, conveyors, and HVAC systems. Typical Faults: Relay fails to trip on overload → motor winding burnout; false tripping under normal load;