Weil McLain 383-500-195 Transformer 120V/24V

The Weil McLain 383-500-195 Transformer 120V Primary 24V Secondary is an electrical control component used to transform incoming power to the unit in HVAC systems. It has a 120V line voltage to a 24V secondary output. It supplies low-voltage power to control circuits in boilers and heating equipment, enabling operation of the thermostats, relays, gas valves, and safety controls. It is typically installed within the appliance cabinet and supports stable transmission between control boards and field equipment. It plays a key role in maintaining safe and consistent system operation in heating applications.