Ronken High Voltage Capacitor 81D42285H55 with Internal Resistor

The Ronken 81D42285H55 is a high-voltage AC capacitor designed for specialized industrial applications requiring reliable energy storage and discharge in high-frequency environments. Featuring a capacitance of 2.8 µF and rated for 2500 VAC at 90 Hz, this capacitor includes an internal resistor for safe discharge, preventing residual voltage buildup. It is constructed in a durable metal can with threaded terminals for secure connections, and is certified PCB-free, ensuring environmental compliance. Ideal for use in power electronics, motor run circuits, lighting ballasts, or pulse-forming networks where higher frequencies (beyond standard 60 Hz) are involved, such as in aviation or specialized machinery. Benefits include high dielectric strength for longevity under stress, compact design for space-constrained installations, and robust construction that withstands vibration and thermal cycling. Compared to similar products from manufacturers like Cornell Dubilier or Aerovox, the Ronken model offers superior frequency handling at 90 Hz, reducing harmonic distortion in non-standard power systems. Drawbacks may include limited availability of exact replacements due to its specialized specs and potential need for custom mounting. Based on visual analysis, this unit appears to be in used but good condition, with minor surface wear; it dates to 2002 and includes faceplate details like serial number 153612. No parent/child assets are evident. For resources, refer to Cornell Dubilier's Ronken catalog (summary: outlines series specs, available at https://www.cde.com/resources/catalogs/RONKEN.pdf) and general high-voltage capacitor guide (summary: installation and safety tips).