Functional Devices TR50VA004 Transformer Circuit Integrity: SPST configuration provides

Circuit Integrity: SPST configuration provides reliable normally-open or normally-closed switching logic as required by the HVAC control board

it ensures direct compatibility with specific waste oil heaters and units where accurate high-temperature detection is mandatory for safe operation

communicating directly with the integrated furnace control board to confirm burner ignition

check your specific actuator model number to ensure the mounting footprint and stroke length align

this OEM relay is the factory-specified replacement for part number S1-02423972000 and is designed to mount and wire directly into the original control panel slots

Functional Devices TR50VA004 Transformer Circuit Integrity: SPST configuration providesThe Functional Devices TR50VA004 Transformer is a heavy duty 50VA power transformer engineered for multi tap versatility in commercial and industrial HVAC control circuits. This unit features a versatile primary voltage configuration, supporting 480 277 240 120Vac, with a standard 24Vac secondary output. Built for field flexibility, it utilizes a foot and dual threaded hub mount, allowing for secure installation in electrical knockouts or flat surface