Constructed from high-purity recrystallized silicon carbide

Common Questions Is the 150-1 casting compatible with both the 150S and the older 150 models

Provides accurate superheat control for improved system efficiency

Internal Spring Return: Provides reliable mechanical fail-safe positioning upon loss of control air

Functional Devices TR20VA004 Transformer R-407C Constructed from high-purity recrystallized siliconThe Functional Devices TR20VA004 is a versatile 20VA control transformer designed for reliable power conversion in building automation and HVAC systems. Built with split bobbin construction, this unit effectively steps down high line voltage to a consistent 24Vac secondary voltage for powering thermostats, relays, and sensors. The multi tap primary accommodates 120 208 240 277Vac, providing technicians with a single part solution for diverse project