Why Phase?
At Phase Technologies, we go beyond just manufacturing phase converters and VFDs—we deliver power solutions that solve real-world challenges with superior reliability, efficiency, and innovation. Every product is engineered, built, and tested in our Rapid City, South Dakota facility, giving us full control over quality and allowing us to maintain some of the shortest lead times in the industry. Our Phase Perfect® digital phase converters deliver cleaner, more balanced power than traditional options, while our line of VFDs offers advanced motor control with customizable solutions and flexibility across a range of applications. We back every product with responsive support, deep technical knowledge, and a commitment to helping you get the job done right the first time. When performance, reliability, and service matter—Phase Technologies stands apart.
American Made
At Phase Technologies, every phase converter and VFD is manufactured at our headquarters in Rapid City, South Dakota. We know that no two installations are the same, and our process is built around that understanding.
Every unit is treated like a custom build—hand-assembled, fully tested, and ready for installation. We design and manufacture most key components in-house, including PCBs, wire assemblies, magnetics and enclosures. By keeping our supply chain short and US-based whenever possible, we ensure quality, reliability, and speed.
Our focus is simple: deliver exactly what customers need to get the job done—without the long wait. That’s how we provide custom solutions with off-the-shelf lead times. We pride ourselves on having the fastest lead times in the industry.
From phase conversion to advanced VFD applications, Phase Technologies delivers exceptional value with power electronics made right here in the USA.
Made In The USA
Industry Best Lead Times
Long Lasting Durability
Simple Installation
