Description
The Marley Engineered Products 315-304252-001 Isolation Transformer 208/240/480V PRI 120V SEC 40VA is a control transformer that converts higher input voltage into a stable output for control circuits in heating and air-handling equipment. It operates through electromagnetic induction between primary and secondary windings to provide isolated and regulated power for system controls. In HVAC systems it is used in electric heaters, unit heaters, and control panels to supply voltage for relays, thermostats, and control boards. It is typically wired into the control circuit and supports stable voltage delivery, improved electrical safety, and reliable system operation.
