Rotary Phase Converter Control Panels
Already have a three-phase motor sitting on the shelf? The NAPCco CP series control panel is everything you need to turn it into a complete rotary phase converter.
The CP panel includes the same digitally controlled start circuit, built-in motor starter, CNC voltage balancing, and Total Power Shutoff Protection found in our Pro-Line units. You supply the motor, we supply the panel. It is a practical, cost-effective way to get reliable three-phase power without purchasing a complete unit.
CP panels are available from 3 HP to 100 HP and are built in Wisconsin by a UL 508A listed panel shop.
Important: A compatible three-phase idler motor is required. See the motor requirements section below.
Rotary Phase Converter 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
- Motor Control Panels Made In the USA
- Lifetime Warranties
Available Upgrades
- UL Listed Control Panels
- Wireless Remote Starter
- Wired Remote Switches
- 480 Volt Control Panels
- Automatic Controls
- Power Time Delays
- Plugs and Outlets
Add Your 3 Phase Motor (Required)
- Add your 3 phase motor to the Pro-Line CP motor control panel to make a rotary phase converter. Requirements for Idler Motor:
- T-Framed (Newer then 1965)
- 2 Pole (3400-3600 RPM) or 4 Pole (1700-1800 RPM)
CP Panel Model Sizing Chart
Use the chart below to find the right CP panel for your application. Pricing includes the control panel only. A three-phase idler motor must be added to complete the converter. Need help sizing? Call us at 877-545-2926 or use the sizing tool below.
Note:
All amperage in table reflect 208 to 250 volt usage
Pricing includes Rotary Phase Converter Control Panel only
A 3 phase idler motor must be added to the control panel to make a complete rotary phase converter
Quick Sizing Guidelines for the Phase Converter Control Panels
| Phase Converter Model | Motor Loads (Horsepower) | CNC, Resistive & Inductive Loads | Phase Converter Model | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Easy | Med | Hard | Very Hard | Total Amps | Total kVA | Total kW | Spindle HP | ||
| CP-3 | 2.5 | 2 | 1.5 | 1 | 4 | 1.4 | 1.1 | 1.5 | CP-3 |
| CP-5 | 3 | 3 | 2 | 1.5 | 7 | 2.4 | 1.7 | 2.5 | CP-5 |
| CP-7 | 5 | 5 | 3 | 2.5 | 11 | 4.5 | 2.2 | 3 | CP-7 |
| CP-10 | 7.5 | 6 | 5 | 4 | 15 | 6 | 3.7 | 5 | CP-10 |
| CP-15 | 10 | 7.5 | 6 | 5 | 20 | 8 | 5.6 | 7.5 | CP-15 |
| CP-20 | 15 | 12 | 10 | 7.5 | 25 | 11 | 7.7 | 10 | CP-20 |
| CP-25 | 20 | 15 | 12 | 10 | 30 | 13 | 9.5 | 12 | CP-25 |
| CP-30 | 25 | 20 | 15 | 10 | 37 | 15 | 11.8 | 15 | CP-30 |
| CP-40 | 30 | 25 | 20 | 15 | 50 | 21 | 15.5 | 20 | CP-40 |
| CP-50 | 40 | 30 | 25 | 20 | 61 | 25 | 21.5 | 25 | CP-50 |
| CP-60 | 50 | 40 | 30 | 25 | 72 | 30 | 26.5 | 30 | CP-60 |
Free Sizing Help
Not sure which CP panel is right for your motor and equipment? We are happy to help. Give us a call or send us a message and we will walk you through it at no charge.
877-545-2926 | Monday through Friday 8:30 AM to 6:00 PM, Saturday 10:00 AM to 2:00 PM
Videos about Installation and using the Sizing Tables
Complete Details of Features
Built-In Motor Starter with Start/Stop Switch
Every rotary phase converter needs a starting mechanism. The CP panel includes one built in as a standard feature, saving you the cost of purchasing a separate starter.
- Self-contained magnetic three-phase motor starter included as standard
- Start/stop switch mounted on the front of the panel for easy access
- No separate starter required, saving time and money on installation
Digitally Controlled & Protected Start Circuit
The CP panel uses the same patented start circuit technology found in our Pro-Line converters. It monitors the start sequence and times out automatically to protect the capacitors.
- Patented differential voltage sensing for precise, reliable start control
- Built-in safety timer automatically times out to prevent capacitor failure
- Latest solid-state technology, no mechanical start relays to wear out
Total Power Shutoff Protection
In the event of a power outage or power loss, the CP panel shuts down all three legs of power simultaneously, protecting your motors and equipment from single phasing when power returns.
- Shuts down all three legs of power simultaneously during a power loss
- Protects motors and equipment from single phasing when utility power resumes
- Competing brands often only cut the generated leg, leaving your equipment at risk
CNC Voltage Balancing
The CP panel delivers the same precision voltage balancing as our full Pro-Line units, making it suitable for CNC machines and other sensitive equipment.
- Voltage balanced phase-to-phase to within 5% or better
- Largest voltage-balanced range available in a rotary phase converter control panel
- Suitable for CNC mills, CNC lathes, and other precision three-phase equipment
Power “ON” Indicator Light
A bright indicator light on the front of the panel gives you instant visual confirmation that the converter is powered and running, even in a loud shop environment.
- Bright indicator light mounted on the front of the control panel
- Instant visual confirmation the converter is powered and ready
Easy Installation
The CP panel is designed to go up quickly with minimal hassle.
- Removable back plate for easy pre-wiring before mounting
- Terminal block connections make wiring clean, fast, and secure
- Knockouts on the bottom and right side to accommodate most conduit routing needs
- No special tools or complicated wiring required
Power Distribution/Terminal Connection
Connecting your wiring is straightforward.
- Oversized power distribution blocks for easy wire termination
- Strip, place, and tighten, no special connectors required
- Clean internal layout makes inspections and troubleshooting easy
Made In the USA
Designed and built in New Berlin, Wisconsin by a UL 508A listed panel shop.
- Designed and built in New Berlin, Wisconsin
- UL 508A listed panel shop construction meets recognized industrial standards
- DIN rail mounted components and twist-and-release capacitors for a clean, organized interior
- Easy to inspect, whether you are an electrician or a code inspector
Add your 3 Phase Idler Motor (Required)
The CP control panel does not include an idler motor. You will need to supply your own compatible three-phase motor to complete the converter. Here are the requirements:
- T-Frame motor (manufactured 1965 or newer)
- 2-pole motor running at 3,400 to 3,600 RPM, or 4-pole motor running at 1,700 to 1,800 RPM
Not sure if your motor qualifies? Call us at 877-545-2926 and we will help you confirm compatibility before you order.