Using this 208/240V to 24V transformer ensures your installation meets UL standards for safety while providing the necessary VA capacity for modern high-efficiency systems

As an HVAC ignition part

63748 is the cross for 63748-0

This specific model is a dual-voltage component

Utica-Dunkirk FE3980G050 Sensor 319848-301 Using this 208/240V to 24VThe Utica Dunkirk FE3980G050 Temperature Sensor is a precision engineered OEM replacement part designed for critical monitoring within the heat exchanger and fluid cycles of high efficiency boilers. As a veteran grade NTC thermistor, this sensor provides the control board with real time resistance data to manage modulation and prevent high limit lockout conditions. This specific FE3980G050 sensor is a direct fit component for a range of ECR