Bradford White 415-43676-01 Switch

The Bradford White 415-43676-01 Thermal Reset Switch is a critical safety component designed for atmospheric vent gas water heaters, specifically calibrated to treat over-temperature conditions. As a direct replacement for 239-43676-01, this manual reset thermal switch ensures the combustion chamber remains within safe operating parameters by interrupting the millivolt signal to the gas control valve if internal temperatures exceed 240°F. This OEM water heater part features a distinct blue color-coding and spade terminal connections for seamless integration into the safety circuit of MI30SF and MI40TF series units.

For field technicians, this thermal cutoff switch is a primary diagnostic point when troubleshooting burner lockout or pilot outages. A tripped switch often indicates restricted airflow, a blocked flue, or internal scaling, necessitating a full combustion system inspection before resetting. Utilizing an authentic Bradford White replacement part maintains the system's safety integrity and original manufacturer specifications, preventing nuisance trips while ensuring reliable flame rollout protection during high-demand cycles.

• Critical Safety Cutoff: Automatically breaks the electrical circuit at 240°F to prevent hazardous overheating.
• Direct OEM Compatibility: Engineered as the factory-authorized successor to the 239-43676-01 for precise fitment.
• Manual Reset Functionality: Protects the system by requiring a physical inspection and manual button depression after a trip event.
• Contractor-Grade Construction: Features high-temp housing and standard quick-connect terminals for rapid field replacement.
• System Protection: Reduces the risk of damage to the gas control valve and tank components caused by abnormal heat accumulation.

Common Questions:

What causes the Bradford White 415-43676-01 to trip repeatedly?
Persistent tripping is typically caused by insufficient combustion air, a clogged flame arrestor, or venting obstructions. Techs should check for "linting" at the base of the heater or a restricted flue baffle.

Can I bypass this switch for testing purposes?
Bypassing is strictly for temporary continuity testing. Running a unit without a functional thermal switch creates a significant safety hazard and may lead to combustion chamber damage.

Is this switch compatible with LP (Propane) models?
This switch is primarily configured for specific Natural Gas MI series models. Always verify the part number against the unit's rating plate to ensure the 240°F set point matches the original design.

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.