The DII is the size corresponding to the ordinary E27 light bulb.
That's an interesting point. On the North American continent, one version of 30-amp-and-under, 125-volt fuses come with "edison" screw bases identical to most incandescent lamps. They are generally obsolete—probably because about 85 years ago someone figured you could bypass a {blown} fuse with a {used-to-be-solid-copper} penny—a US/Canadian 1-cent coin.
[I first discovered diazed fuses used for control circuits in, of all places, a California 500-220kV utility switchyard.]
[This message has been edited by Bjarney (edited 04-09-2003).]
