One-Time OT general purpose fuses provide low cost protection for feeder and branch-circuits serving lighting, heating, and other non-motor loads. OT fuses will safely interrupt available short-circuit currents up to 50,000 amperes in all ratings. OT fuses are not rejection fuses and care should be taken to ensure that replacement fuses do not have lower interrupting ratings than original fuses. FEATURES:- Easy to read imprint label for quick recognition and replacement- Low cost for high protection valueAPPLICATIONS:- Feeders- Branch circuits- Resistive heating- Residential and small commercial installations