Pro Line Rotary Phase Converters

Control Panel Features

  • Built-In Motor Starter with Start/Stop Switch
  • Digitally Controlled & Protected Start Circuit
  • Complete Phase Power Failure Protection
  • CNC Voltage Balancing
  • Power “ON” Indicator Light
  • Easy Installation
  • Distribution Block Connections
  • Power Factor Corrected
  • Made In the USA
  • Lifetime Warranty

Generator Features

  • Custom Made Rotary Phase Converter Generators
  • Low Impedance/High Efficiency Design
  • Available in ODP and TEFC
  • Custom Copper Windings and Rotor
  • Corrosion Resistant Paint
  • Made by Baldor Electric USA
  • Vacuum Pressure Impregnation for all Windings
  • Shielded Windings

Available Upgrades


  • All amperages in table reflect 208 to 250 volt usage
  • Pricing includes Rotary Phase Converter Control Panel and Generator Motor
  • ODP (Open Drip Proof) Idler type recommended for all dry indoor application
  • TEFC (Totally Enclosed Fan Cooled) Idler type recommended for outdoor and wet locations

Quick Sizing Guidelines for the Pro-Line Rotary Phase Converters

Pro-Line Model & Sizing Chart
Phase ConverterHP Motor Loads (Horsepower) CNC, Resistive & Inductive Loads Pro-LineRotary Converter Model
Easy Med Hard Very
3 2.5 2 1.5 1 N/A N/A N/A N/A PL-3
5 3 3 2 1.5 N/A N/A N/A N/A PL-5
7.5 5 5 3 2.5 12 5 2.5 3.5 PL-7
10 7.5 6 5 3 16 6 3.7 5 PL-10
15 10 7.5 7.5 5 25 8 5.6 7.5 PL-15
20 15 12 10 7.5 32 10 7.7 10 PL-20
25 20 15 12 10 40 12 9.5 12 PL-25
30 25 20 15 10 49 21 11.8 15 PL-30
40 30 25 20 15 61 25 15.5 20 PL-40
50 40 30 25 20 76 30 21.5 25 PL-50

How to size a rotary phase converter Motor Load Chart

Complete Details of Features

Built-In Motor Starter with Start/Stop Switch

  • Self-contained built-in magnetic motor starter
  • Money saving feature because every rotary phase converter needs a starting mechanism
  • Start/Stop switch ideally located on the front of the rotary phase converter control panel for easy access and where it should be

Digitally Controlled & Protected Start Circuit

  • The latest in solid state technology
  • Patented Differential Voltage Sensing
  • Safety Timer – times out to eliminate capacitor failure
  • Our Pro Line Rotary Phase Converters are the only phase converters where this technology is available

Complete Phase Power Failure Protection

  • Built in protection protects the rotary phase converter and your equipment in the event of a power loss
  • During a black out, the Pro-Line Rotary Phase Converter shuts down all 3 legs of power
  • Some brands only shut down the generated leg and can cause single phasing when power resumes

CNC Voltage Balancing

  • CNC Voltage Balancing allows you to run even the most sensitive machines
  • Voltage balanced phase-to-phase to within 5% or better
  • The Pro Line Rotary Phase Converter offers the largest voltage balanced range on the market

Power “ON” Indicator Light

  • Shops are a noisy place. This bright light on the front panel lets you know your Pro Line Rotary Phase Converter is up and running.

Easy Installation

  • Removable back plate design makes the rotary phase converter control panel enclosure light and easy to install
  • Terminal block connections make wiring a snap
  • Knockout placements on all four sides allows easy wiring access from the top, bottom or either side

Power Distribution/Terminal Connection

  • Simply strip, place and tighten wires
  • Generously oversized power distribution blocks make wiring a Pro Line Rotary Phase Converter a snap

Made In the USA

  • Pro Line Rotary Phase Converters are proudly made in Wisconsin
  • Built by a UL 508A Panel Shop (Not every panel is UL listed)
  • Clean design makes for easy inspections
  • Din rail mounted components and twist and release capacitors

Custom made Generators by Baldor USA

  • Purpose built for maximum efficacy
  • Custom copper windings and rotor
  • ISR magnetic Windings – Immune to Voltage Spikes

Low Impedance/High Efficiency Generator Design

  • Designed to allow for the maximum current and voltage balance
  • Low resistance produces high efficiency
  • Built to run cool and quiet
  • Produces a tougher, stronger and more stable manufactured phase

**Important point – Some manufacturers use a high-resistant idler motor to promote a soft start. Adding resistance helps soften the startup; however, it restricts the current flow. In return, the idler motor will run hot and not as efficient. It also produces a sloppier and spongy manufactured phase.

Please call or email us if you have any questions about our products, features or sizing – 877-545-2926