Mersen general purpose fuse provide low cost protection for feeder and branch circuits serving lighting, heating and other non-motor loads. It fuse will safely interrupt available short circuit currents up to 50000 amperes in all ratings. This fuse is not rejection fuse - care should be taken to ensure that replacement fuses do not have lower interrupting ratings than original fuses. For versatility and economy, these general purpose fuses are hard to beat. Features: easy to read imprint label for quick recognition and replacement, low cost for high protection value. Applications: feeders, branch circuits, resistive heating, residential and small commercial installations. Approvals: UL Listed to Standard 248-9 File E2137, CSA Certified to Standard C22.2 No. 248.9, Self-certified for DC per UL248.