FERRAZ SHAWMUT OT30 fuses are versatile, general-purpose fuses ideal for low-cost protection in feeder and branch circuits serving lighting, heating, and other non-motor loads. These fuses safely interrupt short circuit currents up to 50,000 amperes and are not rejection fuses, requiring careful replacement with fuses of equal or greater interrupting ratings. OTN versions meet Canadian electrical code requirements for Type “P” fuses. Applications include residential and small commercial installations, resistive heating, and general non-inductive loads.