FeaturesDirect drive, quick-make, quick-break mechanism "snaps" contacts open and closed providing positive on/off indicationSelf-leveling, 3-point mounting systemIntegral cover interlockVisible confirmation of plated blade contact positionsSpring reinforced fuse clips that assure reliable contact for cool operationSuitable for class H, K, J or R fuses, where applicableUL listed short circuit rating is 10000 RMS symmetrical amps standardWith class R fuses and fuse kits installed, 30 to 200 A switches have UL listed short circuit rating of 100000 A RMS symmetricalUL listed as service entrance equipment when installed in accordance with the national electric code