Base contact for contacting fuse capsule in combination switch fuse unit is shaped to lie at given relative spacing from sealing cap for filling hole used for packing sand in fuse capsule

摘要

The base contact (10) is shaped for contacting the main end cap (23) of the fuse capsule (20), which incorporates a filling hole (29), used for packing sand in the fuse capsule, closed by a sealing cap (26) which is not contacted by the base contact Also included are Independent claims for the following: (a) a combination switch fuse unit; (b) a screw-type or plug-in fuse insert fitted with a fuse capsule