The GPX100L Digital rotary phase converter delivers 100 HP of precision three-phase power from your single-phase 230V service. Unlike standard rotary converters, the GPX100L uses digital voltage regulation to maintain tighter voltage balance across all three legs — critical for heavy industrial operations demanding the cleanest three-phase power for high-value equipment. Clean power, no voltage sag, no guesswork.
| Model | GPX100L |
| Series | GPX Digital |
| Total Running HP | 100 HP |
| Largest Starting Motor | 50 HP |
| Digital Voltage Regulation | Yes — active balancing |
| Input Voltage | 230V Single-Phase |
| Output Voltage | 230V Three-Phase (balanced) |
| Service Size | 167 kVA (700A) |
| Breaker Size | 125–350 |
| Single Phase Wire Size | 300 MCM (under 50 ft) |
| Idler Motor Wire Size | 2/0 AWG |
| Idler Motor | 1,120 lbs — 405T NEMA Frame |
| Electrical Panel | 120 lbs — 24" × 24" × 8" |
GPX Digital Series Wiring Diagram — single-phase 230V in, digitally balanced three-phase 230V out
📦 What's Included
- ✅ 100 HP TEFC Idler Motor (continuous duty, cast iron frame)
- ✅ Pre-wired Digital Control Panel with Voltage Regulation
- ✅ Digital Power Grid System (active voltage balancing)
- ✅ AutoLink Soft-Start System (built in)
- ✅ Voltage Display Panel
- ✅ Complete Installation Manual & Wiring Diagrams
- ✅ Lifetime Warranty — motor & panel
Why the GPX100L Digital Phase Converter
Active digital balancing keeps all three voltage legs within tight tolerance. Essential for CNC machines, VFDs, and sensitive electronics that demand clean power.
Tighter voltage balance than standard rotary converters. The digital system compensates in real time — your equipment sees utility-grade three-phase power.
One converter powers your entire shop — up to 100 HP of simultaneous three-phase load with digitally balanced output across every machine.
Thermal and magnetic protection with AutoLink soft-start. The digital controller monitors voltage and current continuously to protect your investment.
Continuous duty rated. TEFC motor handles 24/7 operation in demanding environments — dust, heat, and vibration won't slow it down.
Built-in voltage readout lets you monitor all three legs at a glance. Verify balanced output without pulling out a multimeter.
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 Motor
Totally Enclosed Fan Cooled motor with cast iron frame, precision-balanced rotor, and sealed bearings. Built for decades of continuous industrial service.
🏗️ Common Applications for 100 HP Digital Phase Converters
The GPX100L Digital phase converter is the preferred choice for equipment that requires tight voltage balance — CNC machines, VFDs, precision tools, and sensitive electronics that can fault or produce poor results on unbalanced power.
GPX100L Technical Documentation
Complete specs, wiring diagrams, and installation instructions for this digital phase converter
Talk to an engineer — we'll help you choose between standard and digital phase conversion
The GPX100L is a 100 HP digital rotary phase converter designed and manufactured by Phoenix Phase Converters in Phoenix, Arizona. The GPX Digital series features active digital voltage regulation that maintains tighter voltage balance across all three phases compared to standard rotary converters. This makes the GPX100L the preferred choice for CNC machines, VMCs, EDM equipment, and other precision tools that require clean, balanced three-phase power to operate correctly.
Digital phase converters from Phoenix Phase Converters combine the reliability of a heavy-duty rotary converter with the precision of digital voltage control. The result is utility-grade three-phase power from your single-phase 230V service — without the $10,000+ cost of running three-phase lines from the utility company.
Not sure whether you need a standard or digital phase converter? Our engineers can evaluate your equipment requirements and recommend the right solution. Call us at (800) 417-6568 for a free consultation.
💻 Why the GPX Digital Series
GPX100L is our digital-regulation flagship — active voltage balancing across all three legs, in real time. Digital voltage monitoring reads all three phases 60 times per second and keeps generated leg voltage within 1–3% of the utility legs, regardless of load.
Best for VFD-driven equipment, high-precision CNC, sensitive electronics, and any load where balanced voltage extends motor life. The digital control also gives you fault codes, hour counters, and inrush limiting that mechanical panels can't match.
🛡️ Warranty & Support
Lifetime warranty on idler motor and control panel. Digital control board carries a 3-year replacement warranty. If any component is defective within the warranty period, Phoenix Phase Converters will repair or replace it at our discretion.
Return policy: Sealed, unopened packages are eligible for return within 90 days of purchase. Contact us before returning.
Dedicated engineering support: Every order is assigned to a Phoenix representative. Call (800) 417-6568 before, during, or after installation for sizing questions, VFD compatibility, or troubleshooting.
Helpful guides
Deciding if a digital-regulation converter is right for you? Our knowledge hub covers the trade-offs:
- Digital vs analog rotary phase converters — when the extra regulation is worth it
- VFDs and phase converters — pairing recommendations and pitfalls
- How to size a rotary phase converter — step-by-step sizing guide
- Phase converter FAQ — quick answers to the most common questions
