Bussmann ® British Style BS 88 6-700A 690V Type Rated Current RMS-Amps CT ET FE EET FEE FM FMM MT† MMT† 6 10 12 16 20 25 32 35 40 45 56 63 80 35 40 45 50 63 71 80 90 100 90 110 140 160 100 120 140 160 180 200 180 200 225 250 280 315 350 400 450 500 550 630 700 160 180 200 250 280 315 355 180 200 225 280 315 355 400 450 500 560 630 710 ® Electrical Characteristics I2t (A2S) Clearing Clearing Pre-arc at 415V at 660V 1.8 7 10 16 32 25 32 52 103 103 135 171 360 33 52 76 103 135 210 250 360 470 490 600 1050 1500 400 540 850 1000 1400 1900 1400 2600 3700 5200 7000 10000 15000 10000 15000 20000 30000 45000 60000 2400 3800 6000 11500 16500 19000 22000 1650 2200 3700 6600 8600 13500 21000 30000 42000 60000 68500 78000 8.5 30 40 66 150 150 190 310 600 680 950 1200 2500 130 180 270 380 480 600 900 1300 1800 3000 4000 7000 10000 1600 1900 2500 3700 5300 7100 7500 10500 14500 20500 30500 40000 60000 40000 60000 82000 120000 180000 245000 15000 25000 40000 80000 100000 125000 160000 12000 16000 26000 47000 62000 97000 150000 220000 300000 430000 500000 600000 12 48 65 110 220 250 350 500 900 1100 1500 2000 4000 200 300 450 600 750 950 1500 2100 2800 4500 6500 12000 17000 2400 3100 3800 5700 8400 11400 13500 18500 26500 37500 55000 77000 105000 72500 105000 150000 215000 310000 420000 25000 38000 58000 110000 150000 180000 200000 18000 23000 40000 70000 91000 140000 220000 320000 450000 640000 720000 850000 Ordering Information Watts Loss 2 3 3 7 7 7 11 11 9 11 14 16 18 9 9 11 11 12 17 20 20 23 19 27 35 39 24 32 36 46 46 52 40 40 44 48 48 55 55 85 90 100 100 100 120 26 26 27 32 35 42 51 42 42 42 47 51 54 60 57 64 64 86 105 Part Number 6CT 10CT 12CT 16CT 20CT 25ET 32ET 35ET 40ET 45ET 56ET 63ET 80ET 35FE 40FE 45FE 50FE 63FE 71FE 80FE 90FE 100FE 90EET 110EET 140EET 160EET 100FEE 120FEE 140FEE 160FEE 180FEE 200FEE 180FM 200FM 225FM 250FM 280FM 315FM 350FM 400FMM 450FMM 500FMM 550FMM 630FMM 700FMM 160MT 180MT 200MT 250MT 280MT 315MT 355MT 180MMT 200MMT 225MMT 280MMT 315MMT 355MMT 400MMT 450MMT 500MMT 560MMT 630MMT 710MMT Dimensions Curves Carton Weight (kg) Figure Number See Page or (BIF #) 20 0.160 Fig. 1 page 75 (35785312) 10 0.420 Fig. 2 page 75 (35785312) 10 0.420 Fig. 2 page 76 (35785314) 5 0.450 Fig. 3 page 75 (35785313) 5 0.450 Fig. 3 page 77 (35785292) 1 0.240 Fig. 4 page 76 (35785314) 1 0.450 Fig. 5 page 77 (35785292) 1 0.260 Fig. 4 page 75 (35785313) 1 .0470 Fig. 5 page 76 (35785311) Carton Qty. n Interrupting rating 200kA RMS Symmetrical. n 450 Vdc rating n Watts loss provided at rated current. n Note: FC, 8ET, 12ET, 15ET, 20ET, 65EET and 75EET are available for replacement purposes on existing equipment. n See accessories on page 72. †350 Vdc (IEC) rating. Consult Bussmann for U.L. Recognition status. rev. 6/29/98 1 kg = 2.2 lbs 1 lb = 0.45 kg Form No. Page 1 of 2 BIF Doc #720024 Bussmann ® British Style BS 88 6-700A 690V ® Electrical Characteristics Total Clearing I2t The total clearing I2t at rated voltage and at power factor of 15% are given in the electrical characteristics. For other voltages, the clearing I2t is found by multiplying by correction factor, K , given as a function of applied working voltage, E g , (RMS). 1.6 Arc Voltage This curve gives the peak arc voltage, U L , which may appear across the fuse during its operation as a function of the applied working voltage, E g , (RMS) at a power factor of 15%. K 1500 1.4 Power Losses Watts loss at rated current is given in the electrical characteristics. The curve allows the calculation of the power losses at load currents lower than the rated current . The correction factor, K p , is given as a function of the RMS load current, Ib , in % of the rated current . 1.0 Kp 0.8 UL 0.6 0.5 1) 1.2 1.0 0.4 1000 2) 0.8 0.3 0.6 0.2 500 0.4 1) 0.2 2) Eg Eg 200 300 400 500 200 600 660 1) CT, FE, EET, FEE 2) ET, FM, FMM 400 Ib 0.1 30 40 50 600 660 60 70 80 90 100% 1) CT 2) ET, FE, EET, FEE, FM, FMM Dimensions Fig. 1: CT Fig. 2: ET, FE 4 Fig. 3: EET, FEE 8.7 7.1 5.5 54.8 64.3 74.6 46 70 94 48 63.5 77 11.9 9.7 12.7 17.1 6.4 8.7 8.7 Fig. 4: FM, MT 31.8 19 25.4 19.1 25.4 50 50 A 37 Fig. 5: FMM, MMT A 113 14 113 Type FM FMM MT MMT “A” Dimension 80-85 80-85 85 85 10.3 13.5 10.3 83 41 38.1 Dimensions in mm. 1mm = 0.0394∑ 1∑ = 25.4mm 38 This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. 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, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications. rev. 6/29/98 Form No. Page 2 of 2 BIF Doc #720024