Many IEC design fuses utilize an internal striker assembly that fires when the fuse interrupts. If this striker is used to mechanically trip a latch or energize a coil connection, it can be used to open a secondary three-phase switching mechanism. Check out the Bussmann UK site for more...
The short circuit clearing capability of a fuse is determined by the manufacturer's rating and the type of fuse you are dealing with. I am familiar with Medium Voltage fuses only. Distribution fuses are tested to X/R ratios of 8-12 and Power fuses are tested to X/R ratios in the range of 25...
Check out the Cooper Power Systems 3-Phase Magnex Interrupter.
http://www.cooperpower.com/Library/pdf/24033.pdf
I think this may be what you are looking for.
