Armstrong Furnace R07489B003 Relay Automatic Reset: Self-correcting design restores

Automatic Reset: Self-correcting design restores system power without requiring a manual service call

code-compliant fit inside the control cabinet

Using an OEM pressure switch ensures the safety circuit functions exactly as the engineers intended

Enhanced Mechanical Stability: Prevents the actuator housing from rotating during high-load cycles

it provides a critical safety break in the electrical circuit when the sensed temperature exceeds the user-defined threshold

Armstrong Furnace R07489B003 Relay Automatic Reset: Self-correcting design restoresThe Armstrong Furnace R07489B003 Relay is a critical 24V electromechanical component designed for precise switching in residential heating systems. This HVAC blower relay serves as a direct replacement for specific Armstrong and Concord furnace models, ensuring reliable signal transmission between the thermostat and the high voltage blower motor or inducer. Operating on a 24VAC coil voltage, this relay is engineered for high duty cycles, managing the