Overload Protection Disks B598*1 C 811 ... C 891 265 V, 135 C 5 max. b Applications h Overcurrent and short-circuit protection For enhanced rated current requirements 35 min. Features Coated thermistor disk Surge-proof Manufacturer's logo and type designation od 5 stamped on in white VDE approval (exception: C811) TPT0648-4 Options Dimensions (mm) Leadless disks and leaded disks without are also available on tape Max. operating voltage (TA = 60 C) Rated voltage Switching cycles (typ.) Reference temperature (typ.) Resistance tolerance Operating temperature range (V = 0) (V = Vmax) Type IN IS C 811 C 831 C 841 C 851 C 861 C 871 C 881 C 891 mA 730 470 350 215 150 108 60 30 mA 1450 970 700 445 320 225 120 65 70 ISmax (V=Vmax) A 10,0 7,0 4,1 2,2 1,5 1,0 0,4 0,2 bmax 26,0 22,0 17,5 13,5 11,0 9,0 6,5 4,0 Type C 811 C 831 C 841 C 851 C 861 C 871 C 881 C 891 coating available upon request Thermistors with diameter b 11,0 mm Vmax VN N TRef R N Top Top tS (Vmax, ISmax) s < 10 < 8 < 8 < 8 < 8 < 8 < 8 < 8 Ir (typ.) (V=Vmax) mA 25 20 15 13 10 9 6 5 265 230 100 135 25 % - 40/+ 125 0/60 RN Rmin 2,6 3,7 6 10 15 25 70 150 1,8 2,6 4,3 7,1 10,6 17,8 49,8 107 d 0,8 0,6 0,6 0,6 0,6 0,6 0,6 0,5 hmax 29,5 25,5 21,0 17,0 14,5 12,5 10,0 7,5 V V C C C Ordering code B59811-C135-A70 B59831-C135-A70 B59841-C135-A70 B59851-C135-A70 B59861-C135-A70 B59871-C135-A70 B59881-C135-A70 B59891-C135-A70 Siemens Matsushita Components B598*1 C 811 ... C 891 Characteristics (typical) PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage) PTC current IPTC versus PTC voltage VPTC (measured at 25 C in still air) Switching time tS versus switching current IS (measured at 25 C in still air) Rated current IN versus ambient temperature TA (measured in still air) Siemens Matsushita Components 71 B598*1 C 811 ... C 891 Characteristics (typical) PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage) PTC current IPTC versus PTC voltage VPTC (measured at 25 C in still air) Switching time tS versus switching current IS (measured at 25 C in still air) Rated current IN versus ambient temperature TA (measured in still air) 72 Siemens Matsushita Components