(57) An electrical fuseholder (16, 40) is adapted for use with a rail-mounted electrical
terminal block (14, 70). The fuseholder (16, 40) comprises an insulating plastics
housing (26, 41), a portion (26a, 44) of the housing (26, 41) being formed with a
cavity (28, 45) for a cartridge fuse (30, 46). Two conductor elements (32, 34, 47,
48) are mounted to the housing (26, 41). One portion (32a, 34a, 47a, 48a) of each
conductor element (32, 34, 47, 48) forms a respective one of two contacts for the
fuse (30, 46). Another portion (32b, 34b, 47b, 48b) of each conductor element (32,
34, 47, 48) forms a respective one of two external contacts of the fuseholder (16,
40), for plugging into the terminal block (14, 70) and making electrical contact with
two corresponding internal electrical contacts of the terminal block (14, 70). The
terminal block (14, 70) and the fuseholder (16, 40) are adapted so that the fuseholder
(16, 40) can be plugged into the terminal block (14, 70) selectively one way round
or an opposite way round, relative to an axis (25) of the fuseholder (16, 40). The
portion (26a, 44) of the housing (26, 41) formed with the cavity (28, 45) for the
cartridge fuse (30, 46) is located wholly to one side of said axis (25), whereby,
in use, two mutually adjacent such fuseholders (16, 40), plugged opposite ways round
into mutually adjacent, stacked, terminal blocks (14, 70) mounted on a mounting rail
(12, 71), become stacked together so that said portion (26a, 44) of the housing (26,
41) formed with the cavity (28, 45) for the cartridge fuse (30, 46) of each fuseholder
(16, 40) is located to one side of said portion (26a, 44) of the housing (26, 41)
formed with the cavity (28, 45) for the cartridge fuse (30, 46) of the other fuseholder
16, 40), enabling the pitch (x mm) to be 5 mm of a stack of fuseholders (16, 40) containing
5 mm diameter cartridge fuses (30, 46). A lid (42) may be hinged to the housing (41).
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