Digital Phase Converters
NAPCco’s digital phase converters convert single-phase power into clean, balanced three-phase power using high-speed, solid-state switching, with no rotating parts. An integrated microprocessor monitors the output and maintains phase-to-phase voltage balance within 2% under any load, making the digital range the right choice for CNC machines, VFD-controlled equipment, elevators, HVAC systems and other voltage-sensitive loads. Every unit is built in the USA.
- Made in the USA
- BBB A+ Rating
- Free Sizing Guarantee
- 24/7 Free Lifetime Support
- Best Price Guarantee
Shop by Horsepower (5 - 75HP) or Amperage (18 - 240 Amps)
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TritonPro Maxx™ Digital Phase Converters
TPXOur solid-state digital converters use AC-DC-AC conversion with IGBT technology to produce clean, perfectly balanced three-phase power automatically, under any load condition. With no moving parts, they run quietly and efficiently and maintain voltage balance within 2%, making them an excellent digital phase converter for CNC machines and other precision equipment.
Best for
- voltage-sensitive equipment
- CNC machines
- VFD-controlled motors
- elevators
- HVAC units
- electronics
Browse All Digital Phase Converters for Sale
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How do you size a digital phase converter for your equipment?
Properly sizing a digital phase converter matters. Choose the right size, and you get years of trouble-free performance. There is no minimum load requirement, and you can never oversize, so if you are between two models, it is safe to move up; undersizing is what causes problems.
Enter your equipment type and horsepower in our sizing tool and we will recommend the right model and size. Buy online with confidence, or call us at 877-545-2926 and our engineers will size your application for free.
Compare Digital Phase Converter Models
Not sure which model fits? Call us at 877-545-2926 and we will size it for you at no charge.
Digital Three-Phase Converter FAQs
Our digital phase converters range from $1625 for a 5 HP model to $24,925 for a 75 HP model, so the price depends mainly on the horsepower and output amperage you need. Financing is available, and our best price guarantee means we will beat any comparable USA-made converter by 5%.
Choose a digital phase converter when you are running voltage-sensitive or precision equipment, such as CNC machines, VFD-controlled motors, elevators, HVAC units or electronics. The solid-state design maintains voltage balance within 2%, runs quietly and efficiently, and draws very little standby power, helping to protect your motors and equipment when left running unattended for long periods.
The main benefits of digital phase converters include improved power quality. Solid-state conversion delivers the highest-quality power of any converter type, with precise voltage control that holds balance within 2% to protect sensitive equipment. A single unit can run multiple machines at once, from a welder to a CNC router. The setup is simple, with no programming and no moving parts; a digital converter stays quiet and is cost-effective to run.
All digital phase converters share the same core technology: solid-state, electronic conversion that turns single-phase input into three-phase power with no moving parts. This is a different technology fromstatic phase converters and digital phase shifters, which run one motor at reduced power, so the digital static phase converters some people search for are not considered true digital phase converters
A rotary phase converter uses an idler motor to generate the third leg of power. It is rugged, handles all load types, and comes with a lifetime warranty. A digital phase converter produces its output electronically, maintains a tighter voltage balance, runs more quietly and is more efficient, making it a better fit for precision and voltage-sensitive equipment. Both deliver full 3-phase power to run your equipment at its rated power; digital typically costs a little more for the same horsepower.
Not sure where to start?
Talk to an application engineer for free
A digital phase converter needs to match the equipment it will run, and voltage-sensitive machines leave little room for error. Tell our application engineers what you are powering, and they will recommend the right model at no cost, backed by our sizing guarantee. If the size is wrong, we replace the unit and cover shipping both ways.
