AMP-TRAPĀ® SMARTSPOTĀ® Time-delay fuse feature a visual open fuse indicator and provide IEC type 2 no damage protection to main, feeder and branch circuits for all types of loads. Extremely current-limiting for low peak let-thru current. Recommended for Arc Flash energy reduction. Easy 2-to-1 selectivity for prevention of nuisance shut downs and black outs. Rejection-style design prevents replacement errors (when used with recommended fuse blocks). High-visibility orange label gives instant brand recognition. Metal-embossed date and catalog number for easier traceability and lasting identification. Fiberglass body provides dimensional stability in harsh industrial settings.