York S1-FRNR40 Fusetron Buss Fuse 40A 250V

The York S1-FRNR40 Fusetron Buss Fuse 40A 250V is a dual-element time-delay fuse intended for electrical circuit protection in heating and air conditioning equipment. It is used to interrupt power when current levels exceed better operating limits, assisting electrical assemblies to operate within designed conditions. This fuse is frequently applied in control panels, rooftop units air handlers, and packaged equipment that experience short startup current spikes from motors or compressors in HVAC systems. The fuse supports circuit management by working with contactors, transformers and blower assemblies during normal operation. The compact design fits compatible fuse holders used in commercial and residential equipment.