About Us

Industries, Inc. is a leading manufacturer of AC and DC capacitors located in North Central Illinois at the crossroads of Interstate I-80 and I-39. Our location offers the benefits of these major transportation routes and the availability of all major LTL carriers, UPS and Federal Express all within a few miles of our facility. Ronken capacitors are sold worldwide direct from our facility in Spring Valley, Illinois.

Ronken Industries is a family owned business established in 1980. Our staff of experienced sales and engineering personnel is available to support your capacitor requirements.

Our primary markets include airport lighting, tower lighting, defense contractors, UV curing, UV lighting & printing power supplies, transportation, and communications, HID lighting, ferro-resonant power supplies, filters, motor run, battery chargers, power factor correction, SCR commutation, snubber, frequency changers, motor speed controllers, static power supplies, harmonic filters, ultra violet light curing,  pumps, compressors, energy discharge, sign & neon lighting ballast.

Capacitor packaging styles include industry standard oil-filled & dry metal cases in oval, round, rectangular configurations, and axial lead wrap & fill. Along with these standard styles Ronken can manufacture custom designs for unique applications. High volume production, as well as short runs as low as 5 pieces, can be accommodated.

Our workforce is dedicated to providing quality products on time with quality customer support and technical assistance. Our application engineers can assist on crossing to competitors’ types and selecting the right capacitor for your specific needs.

Ronken is an approved source for Versatex Industries Power factor correction capacitors.