Bulletin 1305, .5 - 5 Hp Fuses Based on testing of a number of different fuse classes, the following recommendation should be observed in order to avoid nuisance blowing of fuses. For 460 V drives .5 Hp and .75 Hp where Table 2.A on page 2-4 in the manual indicates that 3 A fuses should be used, this statement must be added to the text so the table and text would look something like this: 3∅ ∅ Rating kW (Hp) .37 (1/2) .55 (3/4) .75 (1) 1.5 (2) 2.2 (3) 4 (5) 1∅ ∅ Rating kW (Hp) .37 (1/2) .55 (3/4) .75 (1) 1.5 (2) Fuse 230 V Rating 6 6 10 15 25 Fuse 460 V Rating 3* 3* 6 10 15 20 * Must be of the type “ Dual Element Time Delay”, e.g. Bussmann “LPJ” or equivalent. In case other drive sizes display problems with blown fuses, use the “Dual Element Time Delay” type. A typical example would be if an installation has a permanent high line voltage condition.