Schutzgehäuse für elektrische Verteilerschienen

Cover-forming casing for preventing the accidental insertion of metallic parts into a column containing an array of electrical-distribution busbars. The casing comprises two identical insulating half-casings (3) coupling together by mutual interlocking of external interlocking regions (18A, 20A, 22A, 24A) and of internal interlocking regions (18B, 20B, 22B, 24B) until a mutual coupling position which can vary as a function of the dimension of the busbars which are inserted into housings (29, 30) and traverse the lateral walls of the casing via indentations (9A, 11A, 11B, 9B, 13). Fastening devices passing between the busbars are insulated by means of insulating bushings (21) formed from outer and lower tabs (23 and 25) which are separated by slits (36) and which interpenetrate. The bushings (21) are made as one part with the half-casings by moulding of a plastic. This casing has the advantage of being adaptable to various sizes of busbars and of comprising integrated insulating bushings (21), which avoids any risk of forgetting these bushings at assembly and makes an inspection for their presence pointless.