Phase Technologies’ Low Harmonic Series—featuring the LHX, 1LH, and 3LH—offers a powerful solution for demanding motor control applications, all proudly manufactured in the USA.

These low harmonic VFDs are designed to reduce electrical noise and distortion, improving power quality and protecting sensitive equipment by minimizing total harmonic distortion (THD). Our LH drives protect both your equipment and the utility grid, without compromising performance.

IEEE-519 Compliant

Phase Converting

Voltage Doubling

Made in the USA

Phase Technologies’ Low Harmonic Series offers a premium solution for applications where clean, reliable power is critical, at an affordable price. Designed to meet IEEE-519 compliance standards, these drives and VFD panels minimize total harmonic distortion (THD), protecting both your equipment and the utility grid. Built in the USA and engineered for long-term durability, our low harmonic VFDs are ideal for industrial, commercial, and utility environments where power quality can't be compromised.

IEEE-519 Compliant

Economical

Advanced Engineering and Innovation

Made in the USA

Protects Sensitive Equipment and Upstream Power Systems

Available in NEMA 1 or NEMA 3R

508A Panel Shop Options