Ultraviolet (UV) System Power Supplies/Ballasts

Ultraviolet (UV) power supplies—also known as UV ballasts—are the electrical core of any UV water purification system. They regulate and deliver the precise electrical current needed to power the UV lamp, ensuring steady light output for effective disinfection. Even a new UV lamp cannot properly disinfect water without a functioning ballast.

A high-quality UV power supply ensures stable performance by controlling voltage and shielding the system from electrical fluctuations that can shorten lamp life or interrupt UV treatment. Over time, ballasts can wear out from heat, moisture, or electrical stress—making timely replacement essential to keeping your UV system working safely and efficiently. If your UV system alarm sounds or the lamp won't stay lit, it’s often an indication that the power supply or ballast needs to be replaced.

We offer a wide range of UV ballasts and power supplies that are compatible with leading ultraviolet system brands like Viqua and Luminor. Each unit is built to meet strict U.S. and North American performance standards, providing long-term reliability and safe operation.

Not sure which ballast fits your system? Our Certified Water Specialists can help you identify the exact replacement you need—so you can restore your UV system’s performance quickly and with confidence. Enjoy fast U.S. shipping and expert support to keep your UV disinfection system running at its best.