Functional Devices-RIB TR40VA001 Transformer High-Altitude Optimization: Specifically calibrated for

High-Altitude Optimization: Specifically calibrated for elevated installations to ensure clean combustion and prevent carbon monoxide buildup

While often located in indoor air handlers

suitable for standard North American commercial circuits

Designed for precision

While it fits many York-family units

Functional Devices-RIB TR40VA001 Transformer High-Altitude Optimization: Specifically calibrated forThe Functional Devices RIB TR40VA001 is a professional grade 40VA control transformer engineered for high reliability applications in building automation, HVACR, and temperature control systems. As a veteran preferred 120V to 24V step down transformer, this unit features a split bobbin construction to ensure superior isolation and consistent voltage regulation. Designed with inherently limited overcurrent protection, it effectively safeguards