Carrier HH18HA449 Temperature Actuated Rollout Switch 350°F Manual Reset SPST

The Carrier HH18HA449 is an OEM temperature actuated safety switch designed for use in Carrier, Bryant, and Payne gas furnace systems. This rollout switch is a critical safety component that protects against dangerous flame rollout conditions by automatically shutting down the furnace when temperatures exceed safe operating limits.

Key Features:

• Temperature rating: 350°F cutout temperature
• Manual reset design with reset button - requires physical reset after tripping
• SPST (Single Pole Single Throw) switching configuration
• 120V rated for residential HVAC applications
• Genuine OEM replacement part for reliable performance

Replaces Part Numbers: HH18HA350, HH18HA351, HH18HA250, 95-314681, 95-314683

This flame rollout safety switch is commonly used as a rollout protection device in gas furnaces. When this switch trips, it indicates a potentially dangerous condition requiring immediate professional inspection of the heat exchanger and flue system before the furnace is returned to operation. The manual reset feature ensures that the problem cannot be ignored and must be addressed before the system can be restarted.