Technical Support
Phoenix DualZone™ — Maximum Phase Converter Power
75/150 HP ROTARY PHASE CONVERTER - GP75/150NL Auto-Zoned Power Rotary Phase Converter
$22,700.00
Free shipping on all orders · Ships from US warehouse
📞 Get a Quote — 800-417-6568
Made in USA
NEMA 4 Enclosure
Lifetime Warranty
TEFC Cast-Iron Idler
More Power. Built Differently.
More Phase Converter Power. Sequential Idler Starting.
The Phoenix DualZone uses two precision-balanced idler motors to provide more combined core steel, copper winding, and usable generating capacity than a same-rated single-idler design. The idlers start sequentially to reduce the peak starting event. Continuous input current is determined by the connected load, so the incoming service, breaker, feeder, and disconnect must be properly sized.
- Dual precision-balanced idler motors provide more combined generating capacity than a same-rated single-idler design
- Cleaner, more balanced three-phase power — ideal for CNC machines, motors, compressors, and sensitive industrial equipment
- One single-phase input connection powers the system; size that circuit for the actual connected load and the model requirements below
- NEMA 4 sealed control panel — rated for indoor and outdoor installation
- Lifetime warranty on the control panel — backed by our Phoenix tech team
Built for Maximum Output
How the DualZone Delivers More Power.
Step 1
A Properly Sized Single-Phase Service
Connect a properly sized 230V single-phase supply to T1 and T2. Use the model chart below as a starting point, then have a qualified electrician verify the service, breaker, feeder, disconnect, run length, and local code requirements.
Step 2
Dual Idler Motors — Double the Power Generation
Two heavy-duty TEFC cast-iron idler motors work in tandem to generate maximum three-phase output — delivering more combined generating capacity than a same-rated single-idler phase converter.
Step 3
Full-Power Three-Phase Output
The DualZone delivers full-rated three-phase power to your equipment. AutoLink auto-starts automatically — giving you maximum phase converter efficiency with zero manual switching.
Installation
Industrial-Grade Phase Converter. Straightforward Installation.
Every DualZone ships with a complete installation manual, full wiring diagrams, and a wire and breaker sizing chart. Our Phoenix tech team is available by phone to walk you or your electrician through the install — no charge, no ticket, just pick up and call.
Wall-Mount Panel
Mounts on any solid wall or structure. Idler motors sit on the floor or platform below.
Clear Wiring Diagram
Full wiring diagram included inside the panel and in the manual. T1/T2 input on the right, two 3-phase output blocks on the left.
Single-Phase Input Terminals
Bolt-down lug connections on T1/T2. Properly sized wire per the included wire chart.
Zone 2 Idler Motor
The second idler motor connects independently — Zone 2 only runs when that load is active.
Before-Testing Checklist
A structured checklist walks you through every verification step before you energize — no guesswork.
Phase Converter Sizing — Wire & Breaker Chart
DualZone Phase Converter — Wire & Breaker Size Chart
Use this chart to size your single-phase input circuit and per-zone output breakers. All final sizing must be verified by a licensed electrician per local NEC requirements.
| Model | HP Zone 1 / Zone 2 | Input Breaker (2-pole) | Wire to Panel | Output Breaker per Zone | Min. Service Required |
|---|---|---|---|---|---|
| GP10/20NL | 10 / 20 HP | 60A | #6 AWG | 30A | 100A |
| GP15/30NL | 15 / 30 HP | 90A | #3 AWG | 40A | 125A |
| GP20/40NL | 20 / 40 HP | 100A | #2 AWG | 60A | 150A |
| GP25/50NL | 25 / 50 HP | 125A | #1 AWG | 70A | 175A |
| GP30/60NL | 30 / 60 HP | 150A | 2/0 AWG | 80A | 200A |
| GP40/80NL | 40 / 80 HP | 200A | 3/0 AWG | 100A | 250A |
| GP50/100NL | 50 / 100 HP | 250A | 350 MCM | 125A | 300A |
| GP60/120NL | 60 / 120 HP | 300A | 400 MCM | 150A | 350A |
| GP75/150NL | 75 / 150 HP | 400A | 500 MCM | 175A | 400A |
| GP100/200NL | 100 / 200 HP | 500A | 600 MCM | 225A | 600A |
* Wire sizes are minimum recommendations at 75°C conductor rating. Actual sizing depends on run length, ambient temperature, and local code. Consult a licensed electrician.
In the Box
Every Phoenix Phase Converter ships complete.
NEMA 4 Control Panel
Sealed against dust, rain, and washdown. Rated for indoor or outdoor installation.
Two TEFC Cast-Iron Idler Motors
One per zone. Heavy-duty, totally enclosed fan-cooled. Built to run continuously.
AutoLink — Both Zones
Each zone auto-starts when that load powers on. No manual switching. Standard on every DualZone.
Full Wiring Diagram
Printed inside the panel and in the manual. Clear connection sequence, no guesswork.
Wire & Breaker Sizing Chart
Model-specific breaker and wire recommendations. Inside the panel and in the manual.
Lifetime Warranty
Control panel and components covered for the life of the original owner. We stand behind it.
Installation Manual
Step-by-step install guide, wiring diagrams, startup checklist, and troubleshooting cards.
Phoenix Tech Support
Call 800-417-6568 anytime. Real people, free support for the life of your converter.
Common Questions
Phase Converter Questions — Answered.
The DualZone uses two precision-balanced idler motors to provide more combined core steel, copper winding, and usable generating capacity than a same-rated single-idler design. Its sequential starting system reduces the peak starting event, but continuous input current still depends on the connected load and requires a properly sized electrical supply.
Yes. The DualZone is built for exactly that. Multiple three-phase machines can run simultaneously off a single DualZone phase converter — fed through a three-phase sub-panel just like utility three-phase service. Most shops wire the DualZone to a sub-panel and run every machine in the shop from it.
The dual-idler design generates a more stable, better-balanced third phase — particularly under load. Single-idler phase converters can experience voltage imbalance as load increases. The DualZone's second idler motor provides additional generation capacity, improving voltage balance and delivering cleaner power to your equipment across the entire load range.
If you need to run multiple three-phase machines or need more total horsepower than a single-idler converter can deliver cleanly, the DualZone may be the right choice. Call 800-417-6568 and we'll review your machines and electrical requirements.
Size the DualZone to your largest single motor, then add 50% for any additional running loads. For example: if your biggest machine is a 20 HP spindle, a GP25/50NL handles that load with headroom for additional equipment. Not sure? Call 800-417-6568 — our sizing team does this every day, free of charge.
More phase converter power starts here.
Call our sizing team — we'll match the right DualZone phase converter to your machines and service, free of charge.
Talk to a Phase Converter Engineer
📞 800-417-6568Free sizing help • Lifetime warranty • Made in USA • Mon–Fri 7AM–5PM MST