BS 646:1958+A2 relates to cartridge fuse-links of current-ratings up to 5 amperes (hitherto known as Type A fuse-links) intended for use in plugs, and socket-outlet adaptors for two-wire circuits of which the declared voltage does not exceed 250 volts a.c. at 50 cycles per second, or 250 volts d.c. Fuse-links for use in plugs specified in BS 1363 are separately provided for in BS 1362.
BS 646:1958+A2 on specification for cartridge fuse-links is helpful for:
Having access to quality guidelines can ensure safe means of installing and using electrical appliances. BS 646:1958+A2 guidelines provides manufacturers with general requirements, test types, and dimensions which allows you to prepare reliable cartridge fuse-links.
BS 646:1958+A2 guidelines help in reducing the risk of accidents for the users of electrical appliances.