Smart-Boost™ Digital Rotary Phase Converters
Smart-Boost™ is a new breed of Digital Rotary Phase Converter. Our Smart-Boost™ Rotary Phase Converter technology aids in the startup of motors external to the phase converter downstream. The Smart-Boost™ Controller uses solid-state switching to re-engage the start capacitors at zero-degree crossing. Which in turn, surges 300% more current to the motors during their startup. Shop our selection of digital rotary phase converters, including 3 HP, 15 HP, 30 HP, and more.
- Lifetime Warranty
- Made in the USA
- BBB A+
- Sizing Guarantee
- 24/7 Free Lifetime Support
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Smart-Boost Rotary Phase Converter Features
Control Panel Features
- Smart-Boost™ Digital Controller
- 300% Motor Starting Booster Current
- Motor Starter with Start/Stop Switch
- Output Power Failure Protection
- High Current Protective Coils
- Power "ON" Indicator Light
- Large Wiring Compartment
- Power Factor Corrected
- Made In the USA
- Easy to Install
Idler Motor Features
- Custom-Made Smart-Boost™ Digital Rotary Phase Converter Generators
- Manufactured by ABB / Baldor Electric USA
- Vacuum Pressure Impregnation for all Windings
- Shielded Windings and Sealed Bearings
- Low Impedance/High-Efficiency Design
- Custom Copper Windings and Rotor
- Corrosion-Resistant Paint
- Quiet Delta Power
- Made in the USA
Available Upgrades
- NEMA 3R Outdoor-Rated Enclosures
- UL Underwriters Laboratory Listings
- Wireless Key Fob Remote Starter
- Floor Mounting Kits
- Automatic Controls
- Power Time Delay
- Plugs and Outlet
At the core of every Smart-Boost is a solid-state digital controller that re-engages the start capacitors at zero-degree crossing. This delivers a powerful, controlled surge of starting current without damaging the capacitors or the connected equipment. Voltage differential technology monitors the output and dynamically adjusts it across all three phases for cleaner, more balanced three-phase power.
- Electronic solid-state switching, no mechanical contacts to wear out
- 120-degree pure sine wave output for clean, stable three-phase power
- Zero-degree capacitor switching for maximum starting torque
- Self-protected SCR power semiconductors guard against voltage spikes and overloads
- Voltage differential technology monitors and adjusts output in real time
This is the feature that sets the Smart-Boost apart. When a hard-starting motor demands power, the Smart-Boost surges 300% more current to get it moving. This happens every time an external motor starts, not just at initial converter startup, which makes it well-suited to higher horsepower motors and varying loads that are difficult to bring up to speed.
- 300% starting boost current delivered on every external motor start
- Flying restarts supported, the converter does not need to fully cycle down between starts
- Capacitor voltage synchronization on reconnect for smooth, reliable restarts
- Ideal for high-inertia loads like compressors, pumps, fans, and flywheel equipment
Every rotary phase converter needs a starting mechanism. The Smart-Boost includes a fully integrated magnetic motor starter as a standard feature, saving you the cost of a separate unit and adding to the simplicity of getting the converter to operate reliably from day one.
- Integrated magnetic motor starter included as standard
- Start/stop switch mounted on the front of the panel for easy access
- Power ON indicator light visible from across the room confirms the unit is running
- No separate starter required, saving time and money on installation
In the event of a power outage or power loss, the Smart-Boost activates complete three-phase power loss protection by shutting down all three legs of power simultaneously. This protects your motors and machinery from single phasing when power returns and helps extend equipment life.
- Shuts down all three legs of power simultaneously during a power loss or brownout
- Protects motors and equipment from single phasing when utility power resumes
- Competing brands often only cut the generated leg, leaving your equipment at risk
The Smart-Boost is designed to go up quickly and wire up cleanly, connecting to your existing single-phase electrical supply in the workshop.
- Removable sub-panel design keeps the enclosure light and easy to mount
- Oversized power distribution blocks are clearly marked and easy to access
- Large wiring compartment gives you plenty of room to work
- Knockouts on the bottom and right sides accommodate most conduit routing
Details that add up to a dependable, high-quality converter built for long-term reliability.
- Oil and epoxy-filled capacitors with no limit on the number of motor startups can stay energized for extended periods without degrading
- High-current protective coils guard against voltage surges and fast transient short circuits
- Large bleed resistors extend capacitor life
- Made in the USA by a UL 508A certified panel builder in Wisconsin
The Smart-Boost uses purpose-built idler generator motors designed specifically to work with the Smart-Boost digital controller. These are not standard off-the-shelf motors adapted for the job. The low impedance design promotes a strong, well-balanced manufactured leg for consistent performance under load.
- Built in the USA by ABB/Baldor, a name trusted in industrial motor manufacturing
- High-speed, low impedance design promotes a strong, stable manufactured leg of power
- Custom laminated winding design provides real-time feedback to the Smart-Boost controller for better coordination during startup
- Vacuum pressure impregnation on all windings for moisture and contaminant resistance
- Shielded windings and sealed bearings for long service life and no routine maintenance
- Corrosion-resistant paint for durability in shop environments
- Custom copper windings and rotor for maximum efficiency
Sizing the Right Smart-Boost Model
A Smart-Boost is sized for the largest load that will start and run by itself. If multiple loads will start and run at the same time, size based on the total combined horsepower. The phase converter will be larger than the load so that it can supply the inrush current needed during startup. Use the tool below, or call 877-545-2926 and our team will size it with you before you order.
Smart-Boost Model Comparison Chart
Use the chart below to find the right Smart-Boost model for your application. Because the Smart-Boost is designed for hard-starting loads, it handles very hard-starting equipment better than a standard rotary converter of the same size. Not sure which model is right for your equipment? Call us at 877-545-2926 or use the sizing tool below.
Not sure which Smart-Boost fits your equipment? Our team sizes converters every day and will help you get the right model the first time, backed by our sizing guarantee. Call 877-545-2926 or email info@napces.com before you buy.
Installing a Smart-Boost to 3 Phase Rotary Converter
Installation is straightforward for a licensed electrician, thanks to a removable sub-panel, oversized power distribution blocks, and a large wiring compartment to work in. Watch the video below for a step-by-step walkthrough of a typical Smart-Boost installation.
Smart-Boost Rotary Phase Converter FAQs
A Smart-Boost handles single-phase to three-phase power conversion, so you can run 3-phase equipment from a standard single-phase supply. Unlike a static phase converter, it supplies continuous three-phase power rather than reduced output. It changes phases rather than voltage, so if your equipment also needs a different voltage, you can pair it with a transformer.
What sets it apart from a standard rotary phase converter is the digital boost controller, which delivers extra starting current to get hard-starting motors moving every time they start, not just at initial startup.
The Smart-Boost controller uses solid-state switching to re-engage the start capacitors at zero-degree crossing, delivering a controlled surge of starting current with no mechanical contacts to wear out. That means 300% more starting current on every motor start, a clean 120-degree sine wave output, and real-time voltage monitoring, all protected by self-guarding SCR semiconductors that shield your equipment from voltage spikes and overloads.
Size the Smart-Boost around the hardest-starting load it has to turn over, not just the total horsepower connected, so the model you choose is suitable for the toughest thing it has to start. Use the model comparison chart above as a starting point, then call 877-545-2926 and our team will confirm the right model before you order. Every recommendation is backed by our sizing guarantee.
Smart-Boost rotary phase converters are available in a wide range of sizes, from 3 HP to 60 HP (SB-3 through SB-60), enough to power almost any three-phase equipment in the shop. Full specifications, circuit sizes, weights, and pricing for every model are in the comparison chart above. Add a model to your cart to see current pricing, or call us for help matching one to your equipment.
The Smart-Boost is built for hard-starting and high-inertia loads across industrial and agricultural sites: air compressors, irrigation and lift station pumps, fans, blowers, grain dryers, gearhead lathes, and large flywheel equipment with tough starting loads. If your machine trips breakers, struggles to start under load, or needs flying restarts, the Smart-Boost is designed for the job. For voltage-sensitive equipment such as CNC machines that need precise voltage balance, our TritonPro Maxx or Smart-Phase line is the better fit.
The Smart-Boost is a rotary phase converter with a digital boost controller, purpose-built for hard-starting loads and built in the USA. Every unit is backed by our industry-leading lifetime warranty, our best price guarantee (we will beat any comparable USA-made converter price by 10%), and free phone support for the life of the converter. For a direct comparison against a specific competitor model, call 877-545-2926 and we will walk you through the differences for your application.
Every Smart-Boost is built in the USA at our facility in New Berlin, Wisconsin, by a UL 508A certified panel builder. The idler generators are custom-made in the USA by ABB/Baldor.
Need Help Selecting and Sizing the Right Smart-Boost? Call Us!
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Our application engineers size phase converters every day. If you are not sure which model is right for your equipment, call us before you buy.