ensuring zero-gap compatibility with 5-5/8 inch motor diameters

allowing for versatile wiring as either a high-temperature cutout or a low-temperature cycle control for unit heaters

The "/U" suffix denotes "Universal" packaging

Can I use an aftermarket relay instead

5" WC threshold is reached

Allanson 421-655-G Transformer 30067439-890 ensuring zero-gap compatibility with 5-5/8The Allanson 421 655 G Transformer is a high performance ignition transformer engineered specifically for Power Flame burners and high demand commercial heating systems. This heavy duty unit operates on a 120Vac supply voltage, delivering a consistent 10,000Vac secondary voltage at 23mA to ensure reliable arc stabilization and efficient fuel ignition. Designed with a midpoint ground configuration, the 421 655 G minimizes electromagnetic interference