12-17-98 sb98107 rev. a semiconductor fuses fbp 700 volts ac/dc, 35-1000 amps form no. fbp page 1 of 3 bif doc #720041 bussmann catalog symbol: fbp 700v ac, 700v dc interrupting rating 200,000 amperes rms symmetrical u.l. recognized (guide #jfhr2, file # e56412) ultra high degree of current limitation and low i 2 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 suppresses internal arcing together can limit the i 2 t let-thru to values substantially lower than the i 2 t withstand of the semi- conductor device. current rating. current rating is given in ac (rms) for an ambient tempera- ture of 20? (68?). 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. total clearing i 2 t. maximum values of total clearing i 2 t are obtained at the rated a.c. voltage, an arcing angle between 60?and 90? at an available symmetrical rms current of 100,000 amperes, and at a power factor of less than 15%. arc voltage. the arc voltage which develops across a fuse when it is clearing a fault current must always exceed the system volt- age. this arc voltage may reach a value which is twice that of the system applied voltage. catalog numbers fbp-35 fbp-80 fbp-350 fbp-40 fbp-90 fbp-400 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
12-17-98 sb98107 rev. a semiconductor fuses fbp 700 volts ac/dc, 35-1000 amps bussmann 35-60 ampere rating 0.75" (19.1mm) 0.81" (20.6mm) 2.09" (53.2mm) 2.81" (71.4mm) 3.56" (90.5mm) 0.31" (7.9mm) 0.16" (4.0mm) 0.125" (3.2mm) 70-100 ampere rating 0.75" (19.1mm) 1.06" (27.0mm) 2.125" (54.0mm) 2.84" (72.2mm) 3.59" (91.3mm) 0.31" (7.9mm) 0.16" (4.0mm) 0.125" (3.2mm) 125-200 ampere rating 1.34" (34.1mm) 2.125" (54.0mm) 3.09" (78.6mm) 4.09" (104.0mm) 0.41" (10.3mm) 0.25" (6.4mm) 0.16" (4.0mm) 1.0" (25.4mm) 0.06" (1.6mm) 1.5" (38.1mm) 2.125" (54.0mm) 1.22" (31.0mm 2.63" (66.7mm) 3.97" (100.8mm) 5.09" (129.0mm) 0.56" (14.3mm) 0.25" (6.35mm) 250-400 ampere rating 450-600 ampere rating 2.66" (67.5mm) 4.09" (104.0mm) 5.09" (129.0mm) 0.53" (13.5mm) 0.16" (3.97mm) 0.38" (9.53mm) 2.0" (50.8mm) 2.5" (63.5mm) 700-800 ampere rating 3.19" (81.0mm) 4.69" (119.1mm) 6.19" (157.2mm) 0.63" (15.9mm) 0.16" (3.97mm) 2.0" (50.8mm) 0.38" (9.53mm) 3.125" (79.4mm) 900-1000 ampere rating 1.38" (34.9mm) 3.19" (81.0mm) 4.75" (120.7mm) 6.75" (171.5mm) 2.0" (50.8mm) 0.5" (12.7mm) 3.5" (88.9mm) 0.63" (15.9mm) dimensional data form no. fbp page 2 of 3 bif doc #720041
semi-conductor fuses fbp 700 volts ac/dc form no. fbp page 3 of 3 bif doc #720041 bussmann 12-17-98 sb98107 rev. a current in amperes time in seconds 20 100 1,000 10,000 20,000 100 10 1 .1 .01 ampere rating 60 100 200 400 600 800 1000 the only controlled copy of this bif document is the electronic read-only version located on the bussmann network drive. all ot her copies of this bif document are by definition uncontrolled. this bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applicatio ns. bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. bussmann also reserves the right to change or update, withou t notice, any technical information contained in this bulletin. once a product has been select- ed, it should be tested by the user in all possible applications. time-current characteristic curves?verage melt
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