Technical Support
DualZone
DualZone Series · Built in Phoenix, AZ
Two machines. One converter.
Two machines. One converter.
Zero compromises.
DualZone phase converters give you two independent output zones from a single unit — run a CNC mill on Zone 1 and a 5 HP compressor on Zone 2 without one machine's startup ever brownouting the other.
10–80 HP
Combined capacity
2
Independent zones
5 yr
Warranty
How DualZone works
One incoming line. Two clean outputs.
Every DualZone is essentially two right-sized phase converters in one cabinet — sharing a single 230V single-phase input but isolated on the three-phase output side.
Zone 1 · Heavy Duty
Run your largest single machine
Sized for the biggest motor in your shop — typically the CNC, the 80-gallon compressor, or the surface grinder.
- Hard-start capable (CNC, recip compressors)
- Full balanced three-phase output
- TEFC cast-iron idler, continuous duty
- Largest starting motor up to ~50% of zone HP
Zone 2 · Auxiliary
Power the rest of the shop
Smaller motors, lights, dust collectors, control circuits — completely isolated so a startup transient on Zone 1 never affects Zone 2.
- Independent contactor and output bus
- Soft-start friendly (lighter loads)
- Run multiple small motors simultaneously
- No cross-talk between zones
Built right
Industrial-grade everything.
IP65-rated control panel. Pre-wired Auto-Zone switching logic. Thermal and magnetic overload protection on both zones. Ships pre-assembled — bolt it down, run conduit, turn it on.
- ✅ IP65 weatherproof control panel
- ✅ Dual TEFC idler motors, cast-iron frame
- ✅ AutoLink soft-start system built-in
- ✅ Pre-wired — installer-friendly
- ✅ 5-year warranty on motors and panel
Why shops choose DualZone
One converter does the work of two.
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True Zone Isolation
Zone 1 startup transients can't brownout Zone 2. Run a CNC and a compressor on the same converter without nuisance trips.
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Lower Cost Than Two Units
One cabinet, one disconnect, one install. Typically 25-35% less than buying two right-sized converters separately.
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Half the Floor Space
Single floor footprint instead of two. Critical when shop space is tight or you're running on a single feed.
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Lifetime-Class Warranty
5-year warranty on motors and panel. We've been making rotary converters in Phoenix since 2003 — we stand behind every unit.
🇺🇸
Made in Phoenix, AZ
Designed, built, wired, and tested in our Arizona facility. No offshore assembly — and you can call the engineers who built yours.
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Continuous Duty Rated
Both zones rated for 24/7 industrial service. TEFC motors, sealed bearings, dust- and vibration-tolerant.
The DualZone lineup
From 10/20 HP up to 50/100 HP.
Whether you're a one-CNC garage shop or a production facility running multiple machining centers, there's a DualZone sized for you. Zone capacities match the most common shop combinations we see — with built-in headroom for soft-start inrush.
DualZone Models
Pick the size that matches your shop.
All DualZone units include both zones, integrated AutoLink soft-start, IP65 panel, and the 5-year warranty.
| Model | Zone 1 | Zone 2 | Combined | Best For | |
|---|---|---|---|---|---|
| GP10/20NL | 10 HP | 20 HP | 30 HP | Hobby shop + light CNC | View → |
| GP15/30NL | 15 HP | 30 HP | 45 HP | Small auto shop | View → |
| GP20/40NL | 20 HP | 40 HP | 60 HP | Two-CNC machine shop | View → |
| GP25/50NL | 25 HP | 50 HP | 75 HP | Production shop | View → |
| GP30/60NL | 30 HP | 60 HP | 90 HP | Large machine shop | View → |
| GP40/80NL | 40 HP | 80 HP | 120 HP | Multi-machine production | View → |
| GP50/100NL | 50 HP | 100 HP | 150 HP | Industrial facility | View → |
| GP60/120NL | 60 HP | 120 HP | 180 HP | Large industrial / granite shop | View → |
| GP75/150NL | 75 HP | 150 HP | 225 HP | Heavy industrial | View → |
| GP100/200NL | 100 HP | 200 HP | 300 HP | Maximum industrial power | View → |
Not sure which one? Call 800-417-6568 — free sizing in 5 minutes.
Common Applications
What DualZone runs every day.
DualZone shines anywhere two distinct three-phase loads need to coexist on one single-phase service.
CNC Machine Shops Auto Repair Shops Woodworking Shops Welding + Compressor Setups Farm + Shop Combos HVAC Service Trucks Production Lines Metal Fabrication Pump Stations Saw Mills
FAQ
Common DualZone questions.
Can I run both zones at the same time?
Yes — that's the whole point. Each zone has its own contactor and output bus. You can run the CNC on Zone 1 and the compressor on Zone 2 simultaneously without one's startup affecting the other.
Do I need two single-phase feeds?
No. DualZone takes a single 230V single-phase input and produces two independent three-phase outputs. One disconnect, one feeder, one install.
What's the largest motor I can start on Zone 1?
Roughly 50% of Zone 1's nameplate HP for hard-start loads (CNC, recip compressors). For soft-start or VFD-driven motors, you can go higher. Call us at 800-417-6568 with your motor list and we'll size it free.
Can DualZone handle a CNC with a 30 HP spindle?
Absolutely — the GP30/60NL or GP40/80NL is sized exactly for that. CNC spindles are hard-start loads, so we recommend Zone 1 at ≥2× the spindle motor HP.
Is it more efficient than two separate converters?
Yes, in two ways: shared idler-motor balancing reduces no-load draw, and a single shared cabinet eliminates duplicate panels, breakers, and conduit runs. Most shops save 25-35% on total install cost.
How long does shipping take?
DualZone units ship from one of three warehouses. Most orders ship within 2-5 business days; freight transit is typically 3-7 days depending on destination. Expedited freight available — ask when you order.
Talk to an engineer who builds these.
We've been making rotary phase converters in Phoenix since 2003. Free sizing, no salespeople, no scripts.
Talk to a Phase Converter Engineer
📞 (800) 417-6568Free sizing help • Lifetime warranty • Made in USA • Mon–Fri 7AM–5PM MST