Technical Support
Phase Converters for Air Compressors
Application Guide · Air Compressors
Phase Converters for Air Compressors
Compressors are hard-starting loads. We size right the first time — add 50% headroom to your nameplate HP for reliable starts every time.
Get a Free Size Recommendation Call 800-417-6568Hard-Starting Load
Compressor motors draw 6–8× nameplate amps at startup (LRA). A standard phase converter sized for running HP will struggle or fail to start. Phoenix NLA models are built for this.
Size Right — Add 50% Headroom
A 10 HP compressor needs at least a GP20NLA (20 HP converter). We build in headroom so your compressor starts clean on the coldest morning.
AutoLink Standard
All Phoenix converters include AutoLink, which safely reconnects the converter after a power interruption — critical for compressors that restart under pressure.
Single or Multiple Compressors
Running two compressors? A DualZone unit can power both zones independently from one converter, with separate AutoLink circuits for each.
Brands We Work With
Ingersoll-Rand, Quincy, Kaeser, Atlas Copco, Saylor-Beall, Gardner Denver, Sullair, Champion, Curtis, Powerex, Rol-Air
Not Sure What Size You Need?
Tell us your compressor HP and we'll recommend the right Phoenix NLA model. No upselling — just the right unit.
Use Our Free Sizing ToolTalk to a Phase Converter Engineer
📞 800-417-6568Free sizing help • Lifetime warranty • Made in USA • Mon–Fri 7AM–5PM MST