This switch provides a reliable safety interlock that prevents system failure due to supply fluctuations

the 421-340 is rated specifically for 120Vac supply voltage

The solenoid coil is rated for 50/60Hz

C Series Optimization: Engineered to meet the specific flow and pressure drop characteristics of modern Honeywell pneumatic architectures

and 58DFA series units

Fasco A173 Inducer Assembly 320720-756 This switch provides a reliableThe Fasco A173 Inducer Assembly is a high performance 115V draft inducer motor specifically engineered as a direct OEM replacement for Intercity Products (ICP), Heil, Tempstar, and Keeprite furnace systems. Operating at 3450 RPM, this PSC (Permanent Split Capacitor) motor provides the critical static pressure required to ensure safe combustion and efficient flue gas evacuation. Built with sealed ball bearings and automatic thermal overload protection,