Lochinvar & A.O. Smith 100208231 Fuse 321042-401 Prevents soot accumulation and heat

Prevents soot accumulation and heat exchanger fatigue caused by improper fuel mixtures

leak-free installation into the gas train

Precise Flow Regulation: The equal percentage flow plug design provides superior throttling for accurate temperature maintenance

Direct OEM Integration: Designed specifically for Heil

Engineered for high-accuracy thermal monitoring

Lochinvar & A.O. Smith 100208231 Fuse 321042-401 Prevents soot accumulation and heatThe Lochinvar & A. O. Smith 100208231 Fuse is a critical 3. 15 Amp 250V slow blow glass fuse designed specifically for the protection of integrated control boards in high efficiency commercial boilers and water heaters. As a direct OEM replacement part, this 5x20mm cartridge fuse ensures the sensitive electronics of the Lochinvar Knight and Armor series, as well as various A. O. Smith Cyclone models, remain protected from overcurrent events and