High Speed Fuses Square Body US Style -- 1250V/1300V (IEC/UL): 50-1400A 1250V/1300V (IEC/UL) 50-1400A Arc Voltage Specifications Description: Square body US style high speed fuses. Dimensions: See dimensions illustration. Ratings: Volts: -- 1250Vac (IEC) -- 1300Vac (UL) Amps: -- 50-1400A IR: -- 100kA RMS Sym. Ag ency Information: CE, Designed and tested to IEC 60269: Part 4, UL Recognized. Consult Cooper Bussmann for UL Recognition/CSA Component Acceptance status. Characteristics 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. Total Clearing I2t 0.5 The total clearing I2t at 0.4 rated voltage and at power factor of 15% are given in 0.3 the electrical 0.2 Eg characteristics. For other voltages, the clearing I2t is 400 600 800 1000 1200 1400 Dashed lines (- - - - - -) apply to the found by multiplying by correction factor, K, given as following amperages:. Siz e Amps. a function of applied working 1* 400A 1 500-630A voltage, Eg, (rms). 2 3 630-1000A 800-1400A B 156 160 160 159 C1 130 127 127 128 C2 101 102 102 101 400 0.4 0.3 0.2 Ib 0.1 30 40 50 70 Features and Benefits Excellent DC performance Low arc voltage and low energy let-through (I2t) Low watts loss Superior cycling capability * * * * Typical Applications DC common bus DC drives Power converters/rectifiers Reduced voltage starters * See pages 126 (690V/700V) and 150 (1000V) D 59 69 77 92 E 45 53 61 76 H 20 25 25 36 I 10 14 14 16 A 164 60 * * * * 6 C1 C2 E 1000 1200 1400 0.6 0.5 B E 800 1.0 Kp 0.8 1mm = 0.0394" / 1" = 25.4mm D Eg 600 For Other Voltage Ratings in This Body Style Dimensions (mm) Type -FU/115, -FKE/115 Siz e 1* 1 2 3 UL 3 Power Losses 1.5 K 1.25 1.0 Electrical 3 2.5 This curve gives the peak 1.8 arc voltage, UL, which 1.4 may appear across the fuse during its operation 103 8 as a function of the applied working voltage, 6 Eg, (rms) at a power factor 5 4 of 15%. I H For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 80 90 100% High Speed Fuses Square Body US Style -- 1250V/1300V (IEC/UL): 50-1400A Catalog Numbers Electrical Characteristics Siz e 1* 1 2 3 Rated Current RMS-Amps Pre-arc 50 135 63 215 80 420 100 750 125 1450 160 2600 200 5150 250 9200 315 18500 350 27000 160 1900 200 3800 250 7750 315 15000 350 20000 400 29500 450 42000 500 69500 550 95000 630 130000 250 6500 280 9350 315 13000 350 16500 400 23000 450 34000 500 48000 550 62000 630 115000 700 160000 800 245000 900 360000 1000 480000 315 9500 350 13500 400 19500 450 31000 500 39000 550 55000 630 83500 700 115000 800 205000 900 305000 1000 450000 1100 575000 1250 810000 1400 1250000 I2t (A2 Sec) Clearing Clearing at 1000V at 1250V 815 1100 1300 1750 2500 3350 4450 5950 9000 11500 16000 21000 31000 41000 54500 73000 115000 150000 165000 220000 11500 15500 22500 30000 46000 61500 90000 120000 125000 165000 175000 235000 250000 335000 340000 465000 660000 38500 51500 55500 74500 77500 105000 97500 135000 140000 180000 205000 270000 285000 380000 370000 495000 575000 730000 795000 1200000 1750000 2350000 58000 77500 81500 110000 120000 160000 185000 245000 235000 310000 325000 435000 495000 665000 705000 940000 995000 1300000 1500000 1900000 2150000 2800000 3950000 6000000 Watts Loss 15 20 25 30 35 40 45 55 60 65 45 50 60 65 70 75 80 85 95 100 65 70 75 80 85 90 95 100 110 115 120 125 135 185 90 95 100 105 110 115 120 125 130 135 140 145 150 High Speed Fuses Catalog Numbers -FKE/115 -FU/115 Type K Without Indicator Indicator for Micro 170M3688 170M3738 170M3689 170M3739 170M3690 170M3740 170M3691 170M3741 170M3692 170M3742 170M3693 170M3743 170M3694 170M3744 170M3695 170M3745 170M3696 170M3746 170M3697 170M3747 170M4688 170M4738 170M4689 170M4739 170M4690 170M4740 170M4691 170M4741 170M4692 170M4742 170M4693 170M4743 170M4694 170M4744 170M4695 170M4745 170M4696 170M4746 170M4697 170M4747 170M5688 170M5738 170M5689 170M5739 170M5690 170M5740 170M5691 170M5741 170M5692 170M5742 170M5693 170M5743 170M5694 170M5744 170M5695 170M5745 170M5696 170M5746 170M5697 170M5747 170M5698 170M5748 170M5699 170M5749 170M5700 170M5750 170M6688 170M6738 170M6689 170M6739 170M6690 170M6740 170M6691 170M6741 170M6692 170M6742 170M6693 170M6743 170M6694 170M6744 170M6695 170M6745 170M6696 170M6746 170M6697 170M6747 170M6698 170M6748 170M6699 170M6749 170M6700 170M6750 170M6701 170M6751 Rated voltage (IEC) 1100. Rated voltage (IEC) 1000V. UL Recognition at 1000V. * Watts loss provided at rated current. * Microswitch indicator ordered separately. See accessories on pages 185-186. * For fuse curves see pages 166 and 167. For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 165 High Speed Fuses Square Body Size 1*, 1 -- 1250V/1300V (IEC/UL): 50-1400A Size 1 -- 160-630A: 1250V Time-Current Curve Time-Current Curve 160A 200A 250A 315A 350A 400A 450A 500A 550A 630A Size 1* -- 50-400A:1250V 104 103 102 Virtual Pre-Arcing Time In Seconds A A 101 100 10-1 10-2 10-3 1x10-4 103 104 Prospective Current In Amp RMS 105 105 B 104 103 Peak Let-Through In Amperes B 400A 350A 315A 250A 200A 160A 125A 100A 80A 63A 50A 630A 550A 500A 450A 400A 350A 315A 250A 200A 160A 104 103 A A 2x102 1x10 2 3 4 10 10 10 Prospective Short-Circuit Current Symmetrical RMS 5 10 6 2x102 1x102 103 104 105 Prospective Short-Circuit Current Symmetrical RMS 630A fuse is derated to 1100V (IEC). Data Sheet: 17056630 166 105 Peak Let-Through Curve Peak Let-Through Curve Peak Let-Through Current 1x102 Data Sheet: 17056632 For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 106 High Speed Fuses Square Body Size 2, 3 -- 1250V/1300V (IEC/UL): 50-1400A Size 3 -- 315-1400A: 1250V Time-Current Curve Time-Current Curve 250A 280A 315A 350A 400A 450A 500A 550A 630A 700A 800A 900A 1000A Size 2 -- 250-1000A: 1250V 104 103 102 High Speed Fuses Virtual Pre-Arcing Time In Seconds A A 101 100 10-1 10-2 10-3 1x10-4 1x102 103 104 Prospective Current In Amp RMS 105 Peak Let-Through Curve Peak Let-Through Curve 105 104 B 1250A 1100A 1000A 900A 800A 700A 630A 550A 500A 450A 400A 350A 315A 104 103 103 A A 2x10 1400A 105 1000A 900A 800A 700A 630A 550A 500A 450A 400A 315A 350A 280A 250A Peak Let-Through Current Peak Let-Through Current B 2x102 2 1x102 103 104 105 Prospective Short-Circuit Current Symmetrical RMS 106 1x102 103 104 105 Prospective Short-Circuit Current Symmetrical RMS 900-1000A fuses are derated to 1100V (IEC). 1250-1400A fuses are derated to 1100V (IEC). Data Sheet: 17056634 Data Sheet: 17056636 For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa 106 167