With origins dating back more than 50 years, Keystone Technologies is proud to offer a line-up of highly reliable, electronic fluorescent ballasts. You will find Keystone products used by many of the worlds leading lighting fixture manufacturers and contractors. These organizations have chosen Keystone products because of their commitment to engineer only the best ballast products for the market.

This Keystone Ballast KTEB-432RIS-1-TP-SL (the replacement for the KTEB-432RIS-1-TP). Please note: the SL version is a Slim Line or smaller physical size. The internal function is the same as your current KTEB-432RIS ballast. This 120 volt, 50/60 Hz ballast uses Instant Start operation and has a 0 degree F temperature starting capability. These electronic fluorescent ballasts have a Class A sound rating. They utilize parallel circuitry to keep the remaining lamps lit if one should go out. This Keystone ballast is capable of operating either (3) or (4) F32T8, F25T8 or F17T8 lamps or (3) F40T8 lamps. The input voltage is 120 and a 0.88 Ballast Factor when operating (4) F32T8 lamps. 

Utilizing a team of the most highly regarded engineers in the industry, Keystone develops their products with a focus on lasting quality, energy efficiency, and reliability. Products do not come to market until they have passed rigorous quality assurance procedures, with zero tolerance for "less than ideal" performance. Customers have come to depend on Keystone as their preferred source for outstanding ballast products. These electronic fluorescent ballasts carry a 3 year warranty.

Specification Sheet