... (MJ30-7,MJ31-7,PJ31-7) designed for use with wedge type fuse carriers on BS applications.Ratings:Volts: - 415VAmps: - 20- 400AIr ... @415VApplications: For use by electrical authorities in distribution pillars, open type substation boards, heavy duty cut-outs, and underground connection boxes ... .Comply with BS88: Part 5 Fuse-Ling Wedge 200A HRC (JPU)LV