... Current: 355A Ir: 80kA@415V BS88:part 5 Description: J type fuse (MJ30-7,MJ31-7,PJ31-7) designed for use with ... wedge type fuse carriers on BS applications.Ratings:Volts: - 415VAmps: - 20- 400AIr: - 80kA ... 415VApplications: For use by electrical authorities in distribution pillars, open type substation boards, heavy duty cut-outs, and underground connection boxes ...