AUL UL Listed Series – Safety and Performance You Can Trust. American Rotary’s AUL series prioritizes both safety and performance in every unit. Each AUL model is certified by Underwriters Laboratories (UL), the globally recognized safety science leader that rigorously tests and certifies products against strict safety standards. This UL certification means every AUL unit has passed comprehensive electrical safety testing, giving you confidence and peace of mind when integrating these systems into your operations. The AUL Phase Converter now comes standard with built-in Surge Protection for added protection against lightning strikes, brown outs, and power surges!

NOTE: for AIR COMPRESSORS: American Rotary recommends sizing 3:1 with Quincy, Ingersoll Rand, and Atlas Compco OR if the air compressor uses a high efficiency motor. (ex. 10HP compressor = ADX30)