Resettable Thermal Switch, 290 Degree, Red

Bradford White 415-43676-03 – Resettable High-Limit Safety Switch, 290°F Manual Reset

The Bradford White 415-43676-03 is a high-limit, manual reset thermal cutoff switch engineered for safety-critical applications in atmospheric vent gas water heaters. Designed to open at 290°F, this device functions as a secondary over-temperature protection mechanism to interrupt gas flow in the event of abnormal heat accumulation.

This component is commonly integrated into select Bradford White models and mounted on the outer jacket or burner chamber area. Its resettable feature allows system restoration without part replacement, provided the underlying cause has been resolved.

Product Function and Use

This switch monitors localized temperature and is intended to interrupt the thermocouple circuit upon reaching its trip point. Restoration requires manual reset, providing an added layer of safety to prevent cycling under fault conditions. The 290°F version (identified by its red housing) is typically specified for use in high-temperature tolerance applications across various residential water heater models.

Specifications

• Manufacturer Part Number: 415-43676-03
• Trip Temperature: 290°F (143°C)
• Reset Type: Manual (requires technician intervention)
• Switch Type: Normally closed, opens on high temperature
• Terminal Connection: 1/4” quick-connect spade terminals
• Mounting: Surface mount using integrated bracket
• Color Identification: Red housing for quick field identification

Installation and Service Considerations

This device must be installed in accordance with OEM specifications and applicable codes. Prior to replacement or reset, service technicians should verify that combustion air, venting, and burner operation are functioning correctly. Installation requires standard hand tools and should be performed with the appliance powered down and gas isolated. Improper reset or reuse of a tripped device without diagnosing the cause may result in unsafe operation or repeated failure.

Professional Application Notes

• ✔ Use as OEM Replacement Only: Do not substitute with lower trip-point devices unless specified by Bradford White.
• ✔ Failure Modes: Common causes of thermal switch trip include flue blockage, burner assembly faults, or restricted combustion air intake.
• ✔ Inspection Point: During annual maintenance, verify terminal condition and thermal switch bracket integrity.

Compatible Units

The 415-43676-03 is used in select gas-fired Bradford White residential water heaters where a 290°F limit switch is specified. Always confirm model compatibility using technical service documentation or the appliance serial number and tag data.