Magnetic Fluorescent
Keystone began as a manufacturer of magnetic ballasts over 65 years ago. We continue to be a proven leader today with durable, long lasting, energy efficient magnetic fluorescent ballasts for a variety of applications. While many other manufacturers have discontinued their magnetic ballast lineup, Keystone remains committed to providing replacement magnetic ballasts for the millions of existing magnetic ballast installations.
Keystone also offers electronic "drop in" replacement to many common magnetic ballasts for simple conversion from magnetic to electronic technology. See our Magnetic to Electronic Conversion Guide in the Resources menu for more details.
