Bussmann® Square Body - Flush End Contact 1000V (IEC) Size 1* Rated Voltage 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 50–400A Electrical Characteristics I2t (A2s) Rated Clearing Current at Rated RMS-Amps Pre-arc Voltage 50 63 80 100 125 160 200 250 315 350 400 135 215 460 860 1450 2850 4950 9550 21500 29000 42000 815 1300 2750 5100 8600 17500 29500 57000 130000 175000 250000 Ordering Information Watts Loss -BKN/Type K Indicator for Micro -GKN/Type K Indicator for Micro 20 25 30 35 40 45 48 50 60 65 70 170M3951 170M3952 170M3953 170M3954 170M3955 170M3956 170M3957 170M3958 170M3959 170M3960 170M3961 170M3921 170M3922 170M3923 170M3924 170M3925 170M3926 170M3927 170M3928 170M3929 170M3930 170M3931 Curves Carton Qty. Carton Weight (kg) See Page or (Datasheet) 6 2.35 Page 74 720077 1 kg = 2.2 lbs. 1 lb = 0.45 kg I I I I Interrupting rating 150kA (Estimated 300kA) RMS Symmetrical. Watts loss provided at rated current. Microswitch ordered separately. *Overall length is 90 mm, for all other fuses the overall length is 75 mm. The only controlled copy of this BIF document is the electronic read-only version located on the Bussmann Network Drive. All other copies of this 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 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. 2-25-02 SB01407 Form No. 170M Page 1 of 4 BIF Doc #720077 Bussmann® Square Body - Flush End Contact 1000V (IEC) 50–400A Electrical Characteristics Total clearing I2t Arc Voltage Power Losses 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, Eg, (RMS). This curve gives the peak arc voltage, UL, which may appear across the fuse during its operation as a function of the applied working voltage Eg, (RMS) at a power factor of 15%. 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, Kp, is given as a function of the RMS load current, Ib, in % of the rated current. *Rated voltage 900V 1,5 3 UL 2,5 2 1,8 1,6 1,4 1,2 103 K * 1,0 0,5 0,3 0,4 0,3 0,2 0,15 4 0,2 Eg 600 700 800 900 Eg 3 1000 Kp 0,8 0,7 0,6 0,5 8 7 6 5 0,4 500 1,0 500 600 700 800 900 0,1 30 1000 Ib 40 50 60 70 80 90 100% Dimensions Flush End Contact Type –BKN/- and –GKN/Size 1*BKN/75+GKN/75 1BKN/75+GKN/75 2BKN/75+GKN/75 3BKN/75+GKN/75 B 74 74 74.4 75.4 Max D 61 69 77 92 E 43 52 59 74 F M8 M8 M10 M12 F§ 5/16” – 18 UNC-2B 5/16” – 18 UNC-2B 3/8” – 16 UNC-2B 1/2” – 13 UNC-2B Min G 5 8 10 10 H ø17.5 ø20 ø24 ø30 Size A B 3BKN/90+GKN/90 80.3 91.4 § Valid for fuses type –GKN/Dimensions in mm 1 mm = 0.0394” 1” = 25.4 mm Max D 92 E 74 F M12 F§ 1/2” – 13 UNC-2B Min G 10 H ø30 2-25-02 SB01407 A 72.5 73.2 73.2 73.3 Form No.170M Page 2 of 4 BIF Doc #720077 BIF Document 720077 1* Size The partial dotted curves are for fuses designed to give part range protection (aR protection). Loading or operation above the curve indicated at A on the curves must in general be avoided. Please see technical guidance 170K… for further information. Curves that are not dotted are for fuses designed to give full range protection. 1s 400A 315A 200A 125A 80A 50A 10-1 350A 250A 160A 100A 63A Virtual Pre-arcing Time In Seconds Semiconductor Fuse 50-400A, 1000 Volts 10-2 10-3 10-4 5x101 102 103 104 5x104 Prospective Current In Ampere RMS Pre-Arcing Time-Current Characteristic Curves TYPOWER ZILOX 2-25-02 SB01407 BUSSMANN P.O. Box 14460 St. Louis, MO 63178-4460 U.S.A. Phone: 636-394-2877 Fax: 800-544-2570 Int’l Fax: 636-527-1413 Approved: PK Rev. Date: FEB-99 BUSSMANN U.K. Burton-on-the-Wolds Leicestershire LE12 5TH England Phone: 44-1509-882737 Fax: 44-1509-882786 Page Pub. Date: BUSSMANN DENMARK 5 Literbuen DK-2740 Skovlunde Copenhagen, Denmark Phone: 45-4485-0900 Fax: 45-4485-0901 Bussmann reserves the right without notice to change design and/or discontinue distribution of this product. 3 of 4 NOV-94 BIF Document Semiconductor Fuse 50-400A, 1000 Volts 720077 1* Size Peak Let-Through Current In Amperes 105 400A A A 350 315 250A 200A 160A 125A 100A 80A 630A 50A 104 103 2x102 102 103 104 105 106 Amp Prospective Short-Circuit Current symmetrical RMS Peak Let-Through Cut-Off Current Characteristic Curves TYPOWER ZILOX 2-25-02 SB01407 Approved: PK Rev. Date: OCT-94 Page Pub. Date: 4 of 4 NOV-94 The only controlled copy of this BIF document is the electronic read-only version located on the Bussmann Network Drive. All other 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 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.