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The LOCHINVAR L100208232 is a time delay fuse designed as a replacement electrical protection component for fire tube boiler systems. Rated at 250 volts AC and 5 amps, this fuse provides overcurrent protection for control circuits in condensing boiler applications. Time delay fuses are specified where brief inrush currents occur at startup, allowing the circuit to stabilize without nuisance tripping while still protecting against sustained overcurrent conditions. Installation is typically performed by a licensed plumber, hydronic heating technician, or qualified HVAC service professional during routine maintenance or fault diagnosis.
This fuse is specified for use with the Lochinvar Knight Model KH55 to 285 Fire Tube Boiler series. It fits within the boiler control panel or electrical protection assembly and is a direct OEM replacement component. Technicians servicing Knight fire tube boilers in the KH55 through KH285 output range should confirm the fuse rating matches the original before installation.
Designed for use with the Lochinvar Knight Model KH55 to 285 Fire Tube Boiler series.
Always shut down the boiler and disconnect power at the service disconnect before replacing any fuse or electrical component. This work should be performed by a licensed HVAC technician or plumber familiar with hydronic heating systems and applicable local electrical codes. Confirm the replacement fuse rating matches the original specification exactly before re-energizing the system. Never substitute a fuse with a higher amp rating as a workaround for a recurring fault.
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