Lochinvar & A.O. Smith 100299163 Fuse 250V Time Delay .600 Amp

Lochinvar & A.O. Smith 100299163 Time Delay Fuse Overview

The Lochinvar & A.O. Smith 100299163 is an OEM replacement time delay fuse designed to protect the electrical circuits in Lochinvar and A.O. Smith water heaters and boiler systems. Rated at 250 volts and 0.600 amperes, this fuse provides reliable overcurrent protection while accommodating brief, harmless inrush currents — helping prevent nuisance trips during normal equipment startup cycles.

Key Features

• Voltage Rating: 250V
• Amperage Rating: 0.600A (600mA)
• Fuse Type: Time Delay — tolerates short-duration current surges without tripping
• OEM Part Number: 100299163
• Compatible with Lochinvar and A.O. Smith water heating and boiler equipment
• Designed for precise circuit protection in sensitive control circuits

Why Time Delay Fuses Matter

Time delay fuses are engineered to withstand brief inrush currents that occur when motors, transformers, or other inductive loads start up. Unlike fast-acting fuses, they will not open on harmless transient surges, yet they respond quickly to sustained overloads or short circuits — protecting your equipment and reducing unnecessary service calls.

Application

• Lochinvar water heaters and boiler control boards
• A.O. Smith commercial and residential water heating systems
• Replacement for failed or blown OEM fuses in control circuits

Installation Notes

Always verify the fuse rating matches your equipment’s specifications before installation. Disconnect power to the unit before replacing any fuse. Consult your equipment’s service manual or a qualified technician if you are unsure of the correct replacement part.