About

Features Gallery

American Rotary engineers the entire phase converter system to provide optimum performance. Our soft start generator and MicroSmartTM controller combine to make the most powerful and precise rotary phase converter on the market.

Made in Wisconsin

Designed and Manufactured in Wisconsin
The focus of American Rotary, is always on innovative engineering, product development, and outstanding customer service. The results are great Wisconsin made phase converters that work flawlessly, provide unparalleled performance and are easy to install, all at an affordable price.

Made in Wisconsin

Keeping Jobs at Home
Keeping jobs at home not only helps our economy, but it is critical for quality control and for the customer serivce American Rotary provides for all our customers.

Made in Wisconsin

Passion for Performance
American Rotary's breakthrough design of the MicroSmart™ controller (AD, ADX, AUL, AMP,AI) allowed it to create the first true digitally controlled phase converter in the industry. Its digital accuracy provides an impressive ability to adapt to changing loads, sagging voltages and gives our phase converters the feel and performance you expect from high precision machines.

Made in Wisconsin

GENTEC Baldor Partnership
The single largest component in a phase converter is the American Rotary Soft Start Generator. American Rotary's engineering departments spent over 2 years engineering the perfect generator for a Rotary Phase Converter, and its patent technology is the best in the industry. American Rotary's custom generator is one of a kind in our industry and outperforms the standard motor/idlers found on a typical phase converter.

American Rotary Soft Start Generator

Designed for Phase Converters
American Rotary's custom designed generator uses only 1/3 of the starting current to get the generator started and unlike traditional off the shelf three phase motors they are capable of running 24/7 with no duty cycle. In addition, unlike many competitors that use a three phase motor that have the shaft removed, our generators provide precise power and run cooler, which in turn will extend the life of your idler.

American Rotary Soft Start Generator

Stable Voltage and Sinewaves
The induction generator, by design, balances the power factor and phase angle which ultimately leads to true, undistorted sinewaves and more stable voltage. Typical phase converters that use modified motors have distorted sinewaves resulting in harmonics causing high operating temperature on the load motor, putting undue stress on your equipment.

American Rotary Soft Start Generator

Open Design (ODP) vs. Enclosed Design (TEFC)
Major manufacturers like American Rotary, Phase-A-Matic, Ronk, and Kay use Open Drip Proof (ODP) style designs. Open designs run cooler, quieter, use less power and can maintain voltage better than TEFC Designs. Only trust Open Drip Proof designed phase converters to run your valuable equipment.

American Rotary Soft Start Generator

Voltage Stabilization
A screen shot of an oscilloscope shows the difference in voltage drop using a modified 3-phase motor (GREEN) vs. using a American Rotary Soft Start Generator (RED). This is especially important when running voltage sensitive equipment such as CNC machines, welders and other rectified or computer loads. Stable voltage keeps your equipment protected and running perfectly.

Full Current Starter

Built-in Magnetic Starter
American Rotary's magnetic starter provides the means to continuously control your American Rotary phase converter remotely, from multiple locations or in conjunction with automatic equipment. See the Expandable Design – Remote Start Feature for more information on remote start options.

Full Current Starter

Quality Control
The American Rotary manufacturing team assembles its starter modules using torque drivers that are tested and certified as a requirement for UL certification at our Wisconsin manufacturing plant. Every control panel American Rotary builds passes over 50 criteria for quality certification before it ships your new phase converter to you!

Full Current Starter

Designed for the Hardest Start Ups
American Rotary starters are custom designed to meet even the most difficult loads and the most stringent standards. We oversize the starters to ensure they can handle the entire starting current and continuous load. All American Rotary phase converters undergo rigorous simulation and testing in its R&D department to ensure your equipment and operators are safe and protected.

Full Current Starter

Be Safe and Aware!
A starter is not designed or rated to be the safety disconnect. Be aware of phase converters that claim their starter disconnects all three lines of output. A properly used starter only controls the start/stop of the phase converter and does not disconnect the single phase lines. American Rotary will always put your safety first.

Expandable Design

Double or Triple your power!
All American Rotary Phase Converters are capable of phase synchronization for increased capacity. Converters can be daisy chained together to double, triple, quadruple your power. Call or email the American Rotary technical staff for more information on available options.

Expandable Design

Changes with your hobby or business.
As you add more equipment or change the type of equipment you run, the MicroSmart™ controller adapts with your shop needs. Powering your shop or business with a SMARTConverter™ (AD, ADX) ensures your equipment gets the right power at the right time, even as your business changes and grows.

Expandable Design

Remote Start
All American Rotary Phase Converters are designed to work with wired and wireless remote starts. Our long range radio frequency remote starter and receiver works seamlessly with our latching full current magnetic starter to remotely control your converter. Wireless remotes feature 500’ range and include high gain, omni directional antenna and a key FOB or wall mount transmitter. You can also control your converter with our wired remotes!

Expandable Design

Plug N Play
American Rotary realizes that some equipment just isn’t meant to be hard wired. So it gave every phase converter a space for a twist-lock, 3-phase receptacle and a flush mount 3-phase breaker Great for welders, battery chargers, mobile jobsite converters and more.

Easy Installation

Easy Access Wiring
Designed to meet UL minimum space requirements, American Rotary enclosures have removable sides so that the oversized terminal blocks can be accessed with ease. The cover is hinged and can be easily removed.

Easy Installation

Oversized Terminal Blocks
Copper Aluminum Alloy and Nylene terminal blocks are specifically designed and molded for American Rotary phase converters in order to provide easy organized connections for a carefree, UL compliant installation. Terminal blocks are clearly marked for trouble-free installations.

Easy Installation

Knockouts
No drilling or punching needed! All the necessary knockouts for installation are provided and powder coated to prevent rust. The knockouts are sized for the maximum anticipated conduit for proper wire gauge per NEC.

Easy Installation

Laser Precision
The design flexibility and time savings features that laser cut steel provides is an important part of the quality of an American Rotary phase converter. From knockouts for breakers and receptacles, to perfectly mitered corners, laser manufacturing results in a longer lasting, better quality product.

MicroSmart™ Controller

SMART CONTROL
The American Rotary MicroSmart™ Controller is a patent technology which provides precise control of the phase converter. It monitors the voltage every millisecond providing better voltage control, prolonging the life of the converter, handles significantly more load capacity (ADX, AUL and AI), and enabling several failsafe features that are only available on American Rotary’s SMART Series™ phase converters. (AD, ADX, AUL, AMP and AI units only)

MicroSmart™ Controller

Block Diagram
Smart Series™ digital rotary phase converters (AD, ADX, AUL, AMP and AI) run on our MicroSmart™ Controller. This custom designed microprocessor delivers the right power at the right time in both start-up and run mode. The MicroSmart™ controller monitors and takes a sampling of the voltage every 50 milliseconds on all three lines of the output voltage.. (AD, ADX, AUL, AMP and AI units only)

MicroSmart™ Controller

Proprietary Technology
American Rotary has invested extensively in research and design to create the state of the art MicroSmart™ Digital Controller. Other so called “digital” rotary phase converters use an off the shelf voltage relay that does not monitor the voltage like the MicroSmart™ Controller. (AD, ADX, AUL, AMP and AI units only)

MicroSmart™ Controller

Invest in power
All American Rotary Smart Series™ phase converters are designed to grow with your business. Our converters are engineered to allow numerous upgrade options, including; Hardware, Software and Kit upgrades. You can also run our phase converters in parallel and double your power to adapt to your changing needs. Need more power? More precise power? Just turn on your American Rotary Smart Series™ and let our technology do the work. (AD, ADX, AUL, AMP and AI units only)

CTR Current Control

Powerful Load Starting Capability
High inertia and high friction loads such as air-compressors, blower, fans, flywheel & lifting loads can draw 6 times FLA (full load amps) for several seconds during start up. The CTR acts as a stabilizer, ensuring consistent voltage and current. CTR allows our ADX, AUL and AI phase converters to start your high inertia machinery with ease in about 1/3 the time of a standard phase converter. (ADX, AUL and AI units only)

CTR Current Control

Engineered to Perform
American Rotary leads the industry with its innovative CTR technology. CTR (Current Transient Reactor) along with the MicroSmart ControllerTM allows high currents to be drawn through the phase converter producing more torque while maintaining voltage and power. (ADX, AUL and AI units only)

CTR Current Control

Reliable & Long Lasting Phase Converters
American Rotary's proprietary CTR technology provides a layer of protection against external transient current spikes on the incoming single phase line at start up. Our CTR technology allows us to offer the best phase converter warranty in the industry. (ADX, AUL and AI units only)

CTR Current Control

Reliable & Long Lasting Equipment
Even if your equipment doesn’t need incredible starting performance, the American Rotary CTR technology will ensure your equipment starts as designed. Fast start up times ensure your equipment will run cooler, run more reliably and last longer. The ADX, AUL and AI lines are designed to protect and handle even the hardest loads. (ADX, AUL and AI units only)

Ready to Power Your Equipment?

Find the right phase converter to run your equipment reliably, efficiently, and without costly utility upgrades.