® Bussmann Square Body – DIN 43 653 R 1250V/1300V (IEC/U.L.) 50-1400A ® Electrical Characteristics Ordering Information Curves -KN/110 Type K 2 2 I t (A S) Rated Visual Carton BIF # Current Clearing Clearing Watts Indicator Carton Weight Size RMS-Amps Pre-arc at 1000V at 1250V Loss for Micro Qty. (kg) 50 135 815 1100 15 170M3238 63 215 1300 1750 20 170M3239 80 420 2500 3350 25 170M3240 100 750 4450 5950 30 170M3241 125 1450 9000 11500 35 170M3242 17056630 1* 2 0.84 160 2600 16000 21000 40 170M3243 200 5150 31000 41000 45 170M3244 250 9200 54500 73000 55 170M3245 315 18500 115000 150000 60 170M3246 350 27000 165000 220000 65 170M3247 400 53000 265000 335000 70 170M3248 160 1900 11500 15500 45 170M4238 200 3800 22500 30000 50 170M4239 250 7750 46000 61500 60 170M4240 315 15000 90000 120000 65 170M4241 350 20000 125000 165000 70 170M4242 1 2 1.26 400 29500 175000 235000 75 170M4243 17056632 450 42000 250000 335000 80 170M4244 500 69500 340000 435000 85 170M4245 550 95000 465000 590000 95 170M4246 †630 130000 660000 100 170M4247 250 6500 38500 51500 65 170M5238 280 9350 55500 74500 70 170M5239 315 13000 77500 105000 75 170M5240 350 16500 97500 135000 80 170M5241 400 23000 140000 180000 85 170M5242 450 34000 205000 270000 90 170M5243 2 500 48000 285000 380000 95 170M5244 2 1.66 17056634 550 62000 370000 495000 100 170M5245 630 115000 575000 730000 110 170M5246 700 160000 795000 1050000 115 170M5247 800 245000 1200000 1550000 120 170M5248 †900 360000 1750000 125 170M5249 †1000 480000 2350000 135 170M5250 315 9500 58000 77500 85 170M6238 350 13500 81500 110000 90 170M6239 400 19500 120000 160000 95 170M6240 450 31000 185000 245000 100 170M6241 500 39000 235000 310000 105 170M6242 550 55000 325000 435000 110 170M6243 630 83500 495000 665000 115 170M6244 3 1 1.27 700 115000 705000 940000 120 170M6245 17056636 ‡800 205000 995000 1300000 125 170M6246 ‡900 305000 1500000 1900000 130 170M6247 ‡1000 450000 2150000 2750000 135 170M6248 ‡1100 575000 2800000 3600000 140 170M6249 †1250 810000 3950000 145 170M6250 †1400 1250000 6000000 150 170M6251 n Interrupting rating 100kA RMS Symmetrical. 1 kg = 2.2 lbs. 1 lb = 0.45 kg n Watts loss provided at rated current. n Rated voltage (IEC) †1100V ‡1250V (Consult Bussmann for U.L. Recognition/ CSA Component Acceptance status.) n Microswitch indicator ordered separately. Form No. Page 1 of 2 7-11-01 SB01191 BIF Doc #720030 ® Bussmann Square Body – DIN 43 653 R 1250V/1300V (IEC/U.L.) 50-1400A ® Electrical Characteristics 2 Total Clearing I t Arc Voltage Power Losses 2 The total clearing I t at rated voltage and This curve gives the peak arc voltage, Watts loss at rated current is given in at power factor of 15% are given in the U , which may appear across the fuse the electrical characteristics. The curve L electrical characteristics. For other volt- during its operation as a function of the allows the calculation of the power 2 ages, the clearing I t is found by multi- applied working voltage, E , (RMS) at a losses at load currents lower than the g plying by correction factor, K, given as power factor of 15%. rated current. The correction factor, K , p a function of applied working voltage, is given as a function of the RMS load E , (RMS). current, I , in % of the rated current . g b 1.5 3 1.0 K Kp 1.25 U 2.5 0.8 L 1.0 0.6 1.8 0.5 1.4 0.4 3 0.5 10 0.3 8 0.4 6 0.3 0.2 5 0.2 4 E I E g b g 0.1 3 400 600 800 1000 1200 1400 30 40 50 60 70 80 90 100% 400 600 800 1000 1200 1400 - - - - - - Dashed lines apply to the following amperages: Size 1* 1 2 3 Amp 400 500-630 630-1000 800-1400 Dimensions DIN 43 653: Type -KN/110 Size A B D E H 1* 80 138 59 45 20 1 80 138 69 53 25 108 2 80 138 77 61 25 A 3 81 139 92 76 30 Dimension in mm. 1mm = 0.0394• 1• = 25.4mm H 11 D B E 6 E 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. Form No. Page 2 of 2 7-11-01 SB01191 BIF Doc #720030