Rotary Phase Converters — Complete Guide
A rotary phase converter is a device that converts standard single-phase utility power into true three-phase power — allowing you to run industrial three-phase equipment anywhere you have single-phase service.
How They Work
A rotary phase converter uses an idler motor — a three-phase induction motor with no mechanical load — to generate a third phase. Your utility provides L1 and L2. The idler motor generates L3. Together, they produce balanced three-phase output identical in quality to utility three-phase.
Who Uses Phase Converters?
- Machine shops — Running Haas CNC mills, lathes, grinders, band saws on single-phase rural or suburban service
- Farms and agriculture — Grain augers, irrigation pumps, grain dryers, grain bin fans
- HVAC contractors — Running three-phase rooftop units, chillers, and air handlers
- Woodworking shops — Wide belt sanders, dust collectors, planers, molders
- Auto shops — Frame straighteners, tire changers, large compressors
- Food processing — Meat grinders, mixers, refrigeration compressors
Phoenix Phase Converter Series
| Series | Best For | HP Range |
|---|---|---|
| NL (Auto-Start) | General shop equipment, CNC, lathes | 2–100 HP |
| PL (Push-Button) | Magnetic starter circuits, manual control | 2–100 HP |
| NLA (AutoLink) | Air compressors, HVAC — high inrush loads | 5–100 HP |
| NH/PH (460V) | Equipment requiring 460V three-phase output | 2–100 HP |
| GPX Digital | Smart monitoring, cloud analytics, auto-shutoff | 10–100 HP |
Why Phoenix Phase Converters?
- Made in Phoenix, Arizona for 50+ years
- Lifetime warranty on every unit
- Free sizing help from engineers — call (800) 417-6568
- Ships nationwide
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Phase Converters — FAQ
How quickly can I get a phase converter shipped?
Most standard sizes ship within 1–3 business days from Phoenix, Arizona. Freight shipping nationwide — typically 3–5 day delivery. Call (800) 417-6568 for current stock and lead times.
Do you offer installation support?
Yes — our engineers will walk you through installation by phone at no charge. Call (800) 417-6568 during or after installation with any questions.
Related Articles
- How to Size a Rotary Phase Converter
- What Is a Rotary Phase Converter?
- Rotary vs Digital Phase Converters
- Phase Converter FAQ
Questions? Talk to an engineer.
Free sizing help. Made in Phoenix, AZ. Lifetime warranty on every unit.
Shop Phase Converters