The GP20/40NL Auto-Zoned rotary phase converter delivers dual-capacity three-phase power — 20 HP and 40 HP — from your single-phase 230V service. The intelligent auto-zoning system detects your load and automatically switches between power zones, delivering optimal efficiency whether you're running lighter equipment or heavy-duty machinery.
| Model | GP20/40NL |
| Zone 1 Capacity | 20 HP |
| Zone 2 Capacity | 40 HP |
| Zone Switching | Automatic (load-sensing) |
| Input Voltage | 230V Single-Phase |
| Output Voltage | 230V Three-Phase |
| Largest Starting Motor (Zone 1) | 10 HP |
| Largest Starting Motor (Zone 2) | 20 HP |
📦 What's Included
- ✅ Dual TEFC Idler Motors (20 HP + 40 HP capacity)
- ✅ Pre-wired Electrical Control Panel with Auto-Zone Switching
- ✅ AutoLink Soft-Start System (built in)
- ✅ Intelligent Load-Sensing Controller
- ✅ Complete Installation Manual & Wiring Diagrams
- ✅ Lifetime Warranty — motors & panel
Why the GP20/40NL DualZone Phase Converter
Intelligent load sensing automatically switches between 20 HP and 40 HP zones. Run small tools at lower capacity, heavy equipment at full power — all automatically.
Clean, balanced three-phase power in both zones. Won't damage sensitive equipment or trip breakers under load.
When running smaller loads, the system operates in the lower zone — using less energy than a single large converter running at partial capacity.
Thermal and magnetic protection in both zones. AutoLink soft-start prevents inrush damage on startup.
Continuous duty rated. TEFC motors handle 24/7 operation in demanding environments — dust, heat, and vibration.
One converter covers a wide range of applications. Perfect for shops that mix small and large three-phase equipment throughout the day.
IP65 Weatherproof Control Panel
Every panel is rated IP65 — fully sealed against dust and water jets. Install indoors or outdoors with confidence, even in harsh shop environments.
Heavy-Duty TEFC Idler Motors
Totally Enclosed Fan Cooled motors with cast iron frames, precision-balanced rotors, and sealed bearings. Built for decades of continuous industrial service.
🏗️ Common Applications for 20/40 HP DualZone Phase Converters
The GP20/40NL DualZone is ideal for facilities that run a mix of smaller and larger three-phase equipment throughout the day.
GP20/40NL Technical Documentation
Complete specs, zone capacities, wiring diagrams, and installation instructions
Talk to an engineer — we'll size the right DualZone phase converter for your exact setup
The GP20/40NL is a dual-capacity auto-zoned rotary phase converter designed and manufactured by Phoenix Phase Converters in Phoenix, Arizona. This innovative phase converter provides two power zones — 20 HP and 40 HP — with automatic switching between them based on your connected load. When you're running smaller equipment, the converter operates in the efficient 20 HP zone. When heavy-duty machinery kicks in, it automatically scales to the full 40 HP zone.
The DualZone design is perfect for shops and facilities that run a variety of three-phase equipment sizes. Instead of oversizing a single converter or running two separate units, the GP20/40NL intelligently adapts to your load requirements in real time.
Not sure which DualZone model you need? Our engineers can help you calculate the right capacity based on your equipment list. Call us at (800) 417-6568 for free sizing assistance.
