FERRAZ SHAWMUT A6K20R fuses are fast-acting, current-limiting fuses ideal for applications requiring high short circuit current protection. These fuses are particularly well-suited for branch/feeder circuits and back-up protection in loadcenters, panelboards, and switchboards. Their rejection style design prevents incorrect replacement, while the fiberglass body ensures dimensional stability in harsh industrial environments. The easy-to-read imprint label simplifies identification and replacement, and the high degree of current limitation minimizes peak let-thru current.