HAINEAO SRV230-1960 High Limit Snap Disc Switch (2-Pack)

Upgrade your QuadraFire or Heatilator Eco-Choice pellet stove with this **2-pack of HAINEAO SRV230-1960 High Limit Snap Disc Switches**, a direct replacement for part numbers **812-3420** and **230-1960**. Engineered for high-temperature safety, each switch operates in a **normally closed** configuration, opening automatically at **175°F** to prevent overheating. Once triggered, the switch requires a **manual reset**—though it must first cool completely to avoid damage.

This replacement solution is designed for compatibility with a range of QuadraFire and Heatilator models, including the **Castile FS (2001–2009), Castile Insert (2002–2006), Contour, Santa-Fe (2003–2009), Mt. Vernon Pre (#1780564), and Heatilator Eco-Choice (PS35, PS50, CAB50, ECO-NZ-PS35)**. By acting as a critical safety sensor, the switch helps maintain optimal performance while minimizing fire risks, making it an essential component for pellet stove owners prioritizing reliability and protection.