The KUP-14A55-120 provides three sets of contacts (3PDT) instead of two

allowing for more precise damper positioning and improved HVAC airflow control

Universal Inducer Compatibility: Matches factory specifications for numerous 90% plus efficiency furnace models

more secure electrical connections

Resideo AT150B1252 Transformer 318973-401 The KUP-14A55-120 provides three setsThe Resideo AT150B1252 Transformer is a compact, foot mounted power solution engineered for rigorous light commercial and residential HVACR control systems. This heavy duty unit efficiently steps down 277V primary voltage to a stable 24VAC secondary (27. 5 V. O. C.), delivering a reliable 50VA rating for driving hydronic controls, magnetic switches, and Building Automation Systems (BAS). Designed with a focus on field durability, it features plastic