Snap-Action Contacts: High-integrity SPDT switch mechanism minimizes arcing and ensures clean electrical breaks

Extreme Temperature Resilience: Rated for ambient performance from -40° to 205°F

providing a localized fix for common terminal failures

which provides superior leak-free performance and prevents the disc from sticking to the seat—a common issue in saturated steam environments

Technicians typically identify failure through high-pitched bearing squealing

Utica-Dunkirk 550001339 Transformer 340793-762 Snap-Action Contacts: High-integrity SPDT switchThe Utica Dunkirk 550001339 Transformer is a critical OEM replacement part designed for high efficiency hydronic systems, specifically engineered for the UB90 100 Series II and Q90 Series II boilers. This heavy duty 40VA step down transformer converts 120V primary line voltage to 24V secondary output, providing stable power to integrated control boards, gas valves, and secondary HVAC circuits. Built to withstand the thermal demands of residential and