Category Archives: Product Overview

Blog articles on specific components of rotary phase converters

Top 5 Things To Know When Buying a Phase Converter


Everyday we get hundreds of calls with questions about phase converters. So, we thought we would take a moment and go over the top 5 things you should know before buying a phase converter.

As you can see, there are a few basic things you should know before buying a phase converter.

As a recap:

1. Make sure you have enough single phase power.

Here’s how to calculate how much single phase power you need:

Take the amount of three phase amps of your load x 1.6 = amount of single phase amps. Then, take the amount of single phase amps x 1.2 = required single phase amps with 20% adder. The 20% adder is factored in as a cushion simply because most towns and cities require you have 20% above what your load is.

2. Understand your load.

Is it light, medium, or heavy? To give you an idea, a light load would be something like a drill press or table saw. A medium load would machines similar to CNC machines. A heavy load would be things like HVAC, air compressors, and refrigeration.

3. The size of your load.

Know the horsepower, amps, and kilowatts. Knowing this will help you find the best phase converter for you. As a rule of thumb, you want to go 2:1 (2 times the size of your load) to find the size phase converter you need.

4. Indoor or Outdoor?

Make sure you buy a phase converter that will stay protected in the environment it will be in. For example, if you do welding you will want to make sure your converter stays protected from metal shavings. Likewise, if you are a woodworker, sawdust. If you are a farmer, you want to make sure your equipment is protected in wind, snow, and rain.

5. Who are you buying your phase converter from?

Make sure you are buying from someone who is reputable. We get calls all the time from people who previously bought a phase converter from someone who made one in their garage and it’s not working right and they have no service. By using a quality product to begin with, you will be able to get the exact amount of three phase power you need, protect your equipment, and be able to scale appropriately as needed.

American Rotary Expands Global Distribution of Three Phase Power Converters

American Rotary will offer its industry leading three phase power solutions in partnership with South American distributors

Menomonee Falls, WI, May, 18th, 2015 – American Rotary, the world’s leading manufacturer of three phase rotary phase converters announced it has expanded distribution in Latin America. The company has solidified partnerships with LAERA, Wesco Distribution, Summit Electric, as well as a number of other independent contractors to streamline distribution across South America.


“We are thrilled to join with our Latin American partners to meet the rapidly growing three phase power requirements of the agricultural, industrial, and construction industries.”, Christopher Feavel of American Rotary. “South America is a rapidly expanding market and there is a clear need for reliable, three phase power. Three phase power is the power of choice for many applications. It allows machines to run more efficiently and last longer than machines running on single phase.”

American Rotary has manufactured rotary phase converters in Wisconsin since 1995. Proud of its We Are American Made motto, American Rotary engineers their phase converters to deliver optimum performance. Featuring Variable Impedance Generators (VIT™) and MicroSmart™ Controllers, American Rotary phase converters are designed to be the most powerful and precise rotary phase converter on the market.

Last year, the company expanded its distribution network in Canada in response to growing demand. “With our new partnerships in South America, we can better serve the growing three phase needs of customers throughout the Americas.” David Rehm, CEO of American Rotary. “We are pleased that that our converters are recognized, around the globe, as a powerful and reliable source of three phase power conversion.

Americana Rotary expande Distribución Global de los Transformadores de corriente Fase Tres

Americana Rotary ofrecerá su líder en la industria de tres soluciones de energía de fase en colaboración con los distribuidores de América del Sur

Menomonee Falls, WI, Mayo 18, 2015 – American Rotary, el principal fabricante del mundo de convertidores de fase rotativo trifásicos anunció que ha ampliado su distribución en América Latina. La compañía ha consolidado alianzas con Laera, Wesco Distribution, Cumbre eléctrica, así como una serie de otros contratistas independientes para racionalizar la distribución a través de América del Sur.


“Estamos muy contentos de unirnos a nuestros socios latinoamericanos para satisfacer las crecientes necesidades de potencia de tres fases de las industrias agrícolas, industriales y de la construcción.”, Christopher Feavel de América del Rotary. “América del Sur es un mercado en rápida expansión y hay una clara necesidad, la energía trifásica fiable. De potencia trifásico es el poder de elección para muchas aplicaciones. Permite que las máquinas funcionen de manera más eficiente y duran más que las máquinas que se ejecutan en una sola fase “.

Americana Rotary ha fabricado convertidores de fase rotativos en Wisconsin desde 1995. Orgulloso de sus Somos lema Hecho, ingenieros estadounidense rotarios sus convertidores de fase estadounidenses para ofrecer un rendimiento óptimo. Con Generadores variables Impedancia (VIT ™) y controladores MicroSmart™, convertidores de fase Rotary estadounidenses están diseñados para ser la más potente y preciso convertidor de fase rotativo en el mercado.

El año pasado, la compañía amplió su red de distribución en Canadá en respuesta a la creciente demanda. “Con nuestras nuevas alianzas en América del Sur, podemos servir mejor a las crecientes necesidades de la fase tres de los clientes en todas las Américas.” David Rehm, director general de América del Rotary. “Estamos muy contentos de que de que nuestros convertidores son reconocidos, en todo el mundo, como una fuente de conversión de potencia trifásico potente y fiable.

How to Create a Solid American Made Brand

American Made Brand

It is increasingly hard to find true American Manufactured products.  So many companies today have a nice American facade, but with products that are imported and re-branded.

American Rotary started in a back bedroom and garage in Illinois, and was born out of the need for a better way to convert single phase power to three phase power.  We needed a phase converter to run a Bridgeport milling machine and a lathe in order to make a large CNC router that could make molds for an airplane we were designing.

Ever since I was a kid, I followed the creations of Burt Rutan (Long-EZ, Spaceship One, Voyager etc.)   Burt not only had a gift for solving flight related problems, but he was also a very passionate opponent of the way the world stifles the creativity and progress of those who wish to challenge it.

In addition to creating an American Made product that brings real value to our customers, there are two driving principles that I attribute largely to Burt Rutan that apply not only to research, but to creating a lasting quality product.

1.  Research should be defined as: “doing something where half of the people say it’s impossible.”, Burt Rutan. This is a great benchmark for creating an outstanding product that performs significantly better than the competition.  Something that re-branded, copies cannot do.

2.  Never Defend!  It is not an engineer’s job to defend what they have done.  The performance of the product wins every time.  I can’t tell you how many times we have made a change to something because one customer had a suggestion.  You can’t do that when you copy what someone else has done and don’t understand the whole system, and you can’t do that when it is made in a factory half way around the world.

Burt Rutan is now retired and is building another innovative aircraft, the way he started, in his garage.  A film company called Antennae films is documenting his latest creation and is funding the film primarily from donations.  This is a rare chance to see behind the scene of one of the our countries greatest visionaries.

Burt Rutan has been an inspiration for true innovation to what we do, and though it is our hope to inspire the same in others, it is only because of those that have come before us.

David Rehm

American Rotary