BS 646 58th Edition, January 31, 1958
Specification for Cartridge fuse-links (rated up to 5 amperes) for a.c. and d.c. service
Includes all amendments and changes through Amendment 2, February 2013
Additional Comments: SEE ALSO BS 2950
Published By:British Standards Institution (BSI)
Non-rewireable fuse-links (formerly Type A) for use in plugs and socket-outlet adaptors to BS 546 for two-wire a.c. or d.c. circuits up to 250 volts. Current ratings, performance, dimensions, marking, type tests (including the testing enclosure for duty tests). The requirements for Type B fuse-links previously included in BS 646:1935 have been superseded by BS 2950:1958.