Ferraz Shawmut - Mersen A6K400-R Class RK1 / Fast-Acting A6K-R Current-Limiting Fuse - 400amp. Rated 600 volts AC / 300 volts DC

Current-limiting Amp-Trap A6K-R fuses provide excellent protection where high available short-circuit currents exist. These fast-acting fuses are particularly good for branch/feeder circuits and back-up protection. Features: Rejection style design prevents replacement by other fuse classes; Fiberglass body provides dimensional stability in harsh industrial environments; Easy-to-read imprint label for quick recognition and replacement; High degree of current limitation for low peak let-thru current - Applications: Load centers; Panelboards; Switchboards; Bus duct; Feeder circuits; Non-inductive loads; Lighting circuits - Approvals & Standards: UL listed to standard 248-12 File E2137; CSA certified to standard C22.2 No. 248.12; Self-certified for DC per UL248