This Class 2 transformer provides the necessary current-limiting safety features required for modern HVACR control circuits

utilizing genuine Lennox furnace parts ensures the safety circuit maintains OEM specifications for air handler and heating unit performance

and 70/80 series White Rodgers units

ensuring the furnace high limit prevents heat exchanger overheating

using them elsewhere can compromise combustion safety

Johnson Controls A19ACA-15 Temperature Control 30067439-890 This Class 2 transformer providesThe Johnson Controls A19ACA 15 is a heavy duty, single stage mechanical temperature control engineered for high precision regulation in refrigeration, HVAC, and industrial cooling applications. This SPST (Single Pole Single Throw) controller features an open low switch action, effectively breaking the circuit when temperatures drop to the set point, making it an ideal choice for freeze protection or low limit safety monitoring. Designed for versatile