triggering the immediate mechanical closure of the damper blades to prevent flame and smoke migration through the ductwork

ensuring low-resistance electrical contact

Durable Rubber Construction: Optimized for longevity and a tight seal at temperatures up to 250°F

This spring is the standard choice for contractors upgrading residential service regulators to higher pressure commercial requirements

Whether you are running field wiring for spring return actuators or non-spring return models

York 7681-3301 Rocker Switch triggering the immediate mechanical closureThe York S1 7681 3301 is a professional grade HVAC rocker switch engineered to restore precise circuit control in a wide range of York heating and cooling systems. As an OEM York replacement part, this component ensures exact mechanical fitment and electrical consistency, preventing the terminal overheating often associated with generic substitutes. This furnace blower switch is essential for maintaining the operational integrity of high demand units