Bussmann Semiconductor Fuses FBP 700 Volts AC/DC, 35-1000 Amps 2 Ultra High Degree of Current Limitation and Low I t. The heat energy of even low-level fault currents can quickly destroy a semiconductor device. * Buss FW type fuse limits peak let-thru current to a level which is a fraction of the potential available short-circuit peak current. Fast speed-of-response to build-up of short-circuit current and the quickly decaying short-circuit current as the fuse 2 suppresses internal arcing together can limit the I t let-thru to 2 values substantially lower than the I t withstand of the semi- conductor device. Current Rating. Current rating is given in AC (rms) for an ambient tempera- ture of 20C (68F). Although these fuses can be operated at 100% of rating, good design practice dictates some derating (i.e. for ambient temperature), typically this is 20%. Voltage Rating. Rated voltage of Semiconductor fuses is given in terms of A.C. operation, 60Hz. When used in D.C. circuits no voltage derating is required provided the minimum interrupting capability is eight times the fuse rating and the time constant does not exceed those specified in U.L. 198L. CATALOG SYMBOL: FBP 2 Total Clearing I t. 700V AC, 700V DC 2 Maximum values of total clearing I t are obtained at the rated INTERRUPTING RATING 200,000 AMPERES A.C. voltage, an arcing angle between 60 and 90, at an RMS SYMMETRICAL available symmetrical rms current of 100,000 amperes, and U.L. RECOGNIZED at a power factor of less than 15%. (GUIDE JFHR2, FILE E56412) Arc Voltage. The arc voltage which develops across a fuse when it is clearing a fault current must always exceed the system volt- Catalog Numbers age. FBP-35 FBP-80 FBP-350 This arc voltage may reach a value which is twice that of the FBP-40 FBP-90 FBP-400 system applied voltage. FBP-50 FBP-100 FBP-450 FBP-60 FBP-125 FBP-500 FBP-70 FBP-150 FBP-600 FBP-175 FBP-700 FBP-200 FBP-800 FBP-250 FBP-900 FBP-300 FBP-1000 Form No. FBP 12-17-98 Page 1 of 3 SB98107 Rev. A BIF Doc 720041 Bussmann Semiconductor Fuses FBP 700 Volts AC/DC, 35-1000 Amps Dimensional Data 3.56 5.09 (90.5mm) (129.0mm) 2.81 4.09 (71.4mm) (104.0mm) 0.31 0.81 2.5 2.09 0.75 (7.9mm) 2.66 (20.6mm) (63.5mm) (53.2mm) (19.1mm) (67.5mm) 0.53 (13.5mm) 0.16 0.125 2.0 (4.0mm) (3.2mm) (50.8mm) 35-60 Ampere Rating 3.59 (91.3mm) 2.84 0.16 (72.2mm) (3.97mm) 0.31 0.38 1.06 2.125 0.75 (7.9mm) 450-600 Ampere Rating (9.53mm) (27.0mm) (54.0mm) (19.1mm) 6.19 0.16 0.125 (157.2mm) (4.0mm) (3.2mm) 4.69 70-100 Ampere Rating (119.1mm) 3.125 3.19 (79.4mm) (81.0mm) 0.63 4.09 (15.9mm) (104.0mm) 3.09 (78.6mm) 2.0 0.41 1.0 1.34 (50.8mm) 2.125 (10.3mm) (25.4mm) (34.1mm) (54.0mm) 0.16 0.38 (3.97mm) (9.53mm) 0.16 0.25 (4.0mm) (6.4mm) 700-800 Ampere Rating 125-200 Ampere Rating 5.09 (129.0mm) 3.97 6.75 (100.8mm) (171.5mm) 4.75 2.63 1.22 1.5 (31.0mm (120.7mm) (66.7mm) 3.5 (38.1mm) 3.19 (88.9mm) (81.0mm) 1.38 2.125 (34.9mm) (54.0mm) 2.0 0.56 (50.8mm) (14.3mm) 0.06 0.25 (1.6mm) 250-400 Ampere Rating (6.35mm) 0.5 0.63 (12.7mm) 900-1000 Ampere Rating (15.9mm) Form No. FBP 12-17-98 Page 2 of 3 SB98107 Rev. A BIF Doc 720041