
Lochinvar & A.O. Smith 100208808 Fuse
The Lochinvar & A.O. Smith 100208808 Fuse is a critical 0.8A 250V time delay fuse specifically designed for high-efficiency commercial and residential water heating systems. As an OEM component, this Class T fuse ensures the electrical integrity of the control module by providing precise overcurrent protection. Its slow-blow characteristic is engineered to handle the temporary inrush currents typical during the startup of HVACR control boards and 24V DC power supplies, preventing nuisance trips while maintaining a robust safety margin for sensitive electronics.
This HVAC replacement fuse is widely utilized across several high-performance platforms, including Lochinvar Knight (Models KH55 to 285), Armor (WA 125-200), and Noble fire tube boilers. Technicians often identify this part as the F3 fuse on the control module, which is vital for the 24V supply line. When troubleshooting a blank UIM display or a non-responsive controller, verifying the continuity of the 100208808 water heater fuse is a standard first step. Utilizing genuine A.O. Smith 100208808 parts ensures your installation remains compliant with original equipment specifications and protects the system from catastrophic electrical faults.
Key Benefits- Precise Overcurrent Protection: Rated at 0.8 Amp 250 Volts to protect sensitive 24V control circuits.
- Time Delay Logic: Specifically designed to withstand transient surges, reducing service calls for control module fuse failures.
- Broad Compatibility: Direct replacement for Lochinvar Knight, Armor, and Noble heating units.
- Compact Class T Design: High-interrupting capacity in a small form factor, essential for modern HVACR electrical components.
- What causes this 0.8A fuse to blow? Most often, a short in the 24V wiring, a failing transformer, or a grounded sensor wire will overload the 100208808 fuse.
- Can I use a fast-acting fuse instead? No. This is a time delay fuse; using a fast-acting alternative will result in immediate failure during normal startup cycles.
- Where is it located? On most Lochinvar and A.O. Smith units, this is found on the main control module board, often labeled as F3.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $10.81
-65%$10.81
$3.78Lochinvar & A.O. Smith 100208808 Fuse
The Lochinvar & A.O. Smith 100208808 Fuse is a critical 0.8A 250V time delay fuse specifically designed for high-efficiency commercial and residential water heating systems. As an OEM component, this Class T fuse ensures the electrical integrity of the control module by providing precise overcurrent protection. Its slow-blow characteristic is engineered to handle the temporary inrush currents typical during the startup of HVACR control boards and 24V DC power supplies, preventing nuisance trips while maintaining a robust safety margin for sensitive electronics.
This HVAC replacement fuse is widely utilized across several high-performance platforms, including Lochinvar Knight (Models KH55 to 285), Armor (WA 125-200), and Noble fire tube boilers. Technicians often identify this part as the F3 fuse on the control module, which is vital for the 24V supply line. When troubleshooting a blank UIM display or a non-responsive controller, verifying the continuity of the 100208808 water heater fuse is a standard first step. Utilizing genuine A.O. Smith 100208808 parts ensures your installation remains compliant with original equipment specifications and protects the system from catastrophic electrical faults.
Key Benefits- Precise Overcurrent Protection: Rated at 0.8 Amp 250 Volts to protect sensitive 24V control circuits.
- Time Delay Logic: Specifically designed to withstand transient surges, reducing service calls for control module fuse failures.
- Broad Compatibility: Direct replacement for Lochinvar Knight, Armor, and Noble heating units.
- Compact Class T Design: High-interrupting capacity in a small form factor, essential for modern HVACR electrical components.
- What causes this 0.8A fuse to blow? Most often, a short in the 24V wiring, a failing transformer, or a grounded sensor wire will overload the 100208808 fuse.
- Can I use a fast-acting fuse instead? No. This is a time delay fuse; using a fast-acting alternative will result in immediate failure during normal startup cycles.
- Where is it located? On most Lochinvar and A.O. Smith units, this is found on the main control module board, often labeled as F3.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Shipping & Returns
Description
The Lochinvar & A.O. Smith 100208808 Fuse is a critical 0.8A 250V time delay fuse specifically designed for high-efficiency commercial and residential water heating systems. As an OEM component, this Class T fuse ensures the electrical integrity of the control module by providing precise overcurrent protection. Its slow-blow characteristic is engineered to handle the temporary inrush currents typical during the startup of HVACR control boards and 24V DC power supplies, preventing nuisance trips while maintaining a robust safety margin for sensitive electronics.
This HVAC replacement fuse is widely utilized across several high-performance platforms, including Lochinvar Knight (Models KH55 to 285), Armor (WA 125-200), and Noble fire tube boilers. Technicians often identify this part as the F3 fuse on the control module, which is vital for the 24V supply line. When troubleshooting a blank UIM display or a non-responsive controller, verifying the continuity of the 100208808 water heater fuse is a standard first step. Utilizing genuine A.O. Smith 100208808 parts ensures your installation remains compliant with original equipment specifications and protects the system from catastrophic electrical faults.
Key Benefits- Precise Overcurrent Protection: Rated at 0.8 Amp 250 Volts to protect sensitive 24V control circuits.
- Time Delay Logic: Specifically designed to withstand transient surges, reducing service calls for control module fuse failures.
- Broad Compatibility: Direct replacement for Lochinvar Knight, Armor, and Noble heating units.
- Compact Class T Design: High-interrupting capacity in a small form factor, essential for modern HVACR electrical components.
- What causes this 0.8A fuse to blow? Most often, a short in the 24V wiring, a failing transformer, or a grounded sensor wire will overload the 100208808 fuse.
- Can I use a fast-acting fuse instead? No. This is a time delay fuse; using a fast-acting alternative will result in immediate failure during normal startup cycles.
- Where is it located? On most Lochinvar and A.O. Smith units, this is found on the main control module board, often labeled as F3.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












