UL 508C is going to be withdrawn and will be replaced by UL 61800-5-1!
After 2020-02-01, the UL 61800-5-1 will be the only Standard available for such products investigation, but products that were certified to UL 508C may remain certified after the withdrawal of UL 508C without an investigation to UL 61800-5-1.
There will be no UL Industry File Review (IFR) for products that certified to UL 508C.
- UL 508C: Power Conversion Equipment
- UL 61800-5-1: Adjustable Speed Electrical Power Drive Systems – Part 5-1: Safety Requirements – Electrical, Thermal and Energy
GCS Safety Team