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highlights: psc 1250/1300 volt semiconductor protection fuses ferraz shawmut 1250/1300v psc fuse-links provide maximum flexibility in equipment design and ultimate protection for today? power conversion equipment. these square body fuse-links are available in four different body sizes, each size having four world- wide acceptable mounting styles. the different mounting styles and body sizes along with a broad range of ampere ratings allow greatest flexibility in equipment design. the ferraz shawmut psc fuses have been engineered to provide state-of-the-art protection for scr?, diodes, thyristors, gto? and igbt devices. they have pure silver die-cut elements embedded in solidified sand which helps control arcing charac- teristics for low i 2 t and high interrupting rating. all contact surfaces are silver plated and all hardware is non-magnetic. all fuse links are equipped with a low voltage trip-indicator. this trip-indicator can operate a field mountable microswitch which is easily mounted directly onto the fuse even while in service. choice of mounting styles gives wide choice for equipment design broad range of ampere ratings in a given body size for design flexibility iec 269-4 compliance for fuses for worldwide semiconductor applications *for microswitch information see page j10 extremely fast acting current limiting v ery low i 2 t w orldwide acceptability superior cycling ability f eatures / benefits applications: protection of rectifiers, inverters, dc drives, ups systems, reduced voltage motor starters, and other equipment in globally accepted applications pa rt number designation: 12,5urd: eur opean/iec mounting style/approval t ested @ 1.1 v n a130urd: north american mounting style/approval t ested @ v n *v n = rated voltage ac: 50-1800a 650-1300 vac 100 ka ir dc: consult factory ratings ul recognized component sizes 70,71,72,73 tested to iec 269.4 approvals a 130 urd 71 i 350 a.c. rated volts (130=1300v) class 70 size 71 72 73 mounting types straight-blade li straight-blade lli flat-type, one hole (american) tti indicator amp rating north american reference numbering system 12,5 urd 71 i 350 rated volts (12,5=1250v) class 70 size 71 72 73 mounting types din 110 d11a flat-type, one hole (metric) ttf indicator amp rating european / iec reference numbering system d 78 * contact technical services for applications data.
outline dimensions psc 1250/1300 volt semiconductor protection fuses catalog dimensions - mm no. abcdefg 12,5 urd 70 d11a (50-250) 12 urd 70 d11a (280-315) 40 25 12.5 21 17 100.4 133.4 11 urd 70 d11a (350-400) 12,5 urd 71 d11a (160-450) 11 urd 71 d11a (500-550) 51 25 12.5 25.5 22.5 100.4 133.4 10 urd 71 d11a 630 12,5 urd 72 d11a (280-550) 11 urd 72 d11a 630 60 32 16 30 27 100.4 133.4 10 urd 71 d11a (700-900) 12,5 urd 73 d11a (315-630) 12 urd 73 d11a 700 11 urd 73 d11a 800 74.5 40 20 37.2 34.25 100.4 133.4 10 urd 73 d11a 900 9 urd 73 d11a 1100 european blade din 110, type d11a j 72.5 max (2.85) f g h c b a d e 5.03 (.2) a 4.7 d a e a 6 10.5 10.5 c b 71 f g h 6 (.24) catalog dimensions - mm/(in) no. abcdefghj a130 urd 70 li (63-315) a120 urd 70 li 350 a130 urd 71 lli (160-450) a120 urd 71 lli (500-550) a110 urd 71 lli 630 a130 urd 72 li (280-550) a120 urd 72 li (800) a110 urd 72 li (700-800) a130 urd 73 li (315-700) a120 urd 73 li (800) a110 urd 73 li (900-1000) 74.5 40 20 37.2 34.2 98.8 132.4 157.4 15.9 a090 urd 73 li (1400) (2.93) (1.57) (0.79) (1.46) (1.35) (3.89) (5.21) (6.20) (0.63) a070 urd 73 li 1600 a065 urd 73 li 1800 north american straight blade, types li & lli type d11a types li and lli 51 25 12.5 25.5 22.5 91.4 130.4 152.4 14.6 (2.01) (0.98) (0.49) (1.00) (0.89) (3.60) (5.13) (6.00) (0.57) 60 32 16 30 27 97.6 132.4 157.4 14.6 (2.36) (1.26) (0.63) (1.18) (1.06) (3.84) (5.2) (6.20) (0.57) 40 25 12.5 21 18 91.4 130.4 152.4 10.5 (1.57) (0.98) (0.49) (0.83) (0.71) (3.60) (5.13) (6.00) (0.41) d 79 d
catalog dimensions - in/(mm) no. ab c a130 urd 70 tti (63-315) 1.57 1.00 a120 urd 70 tti 350 (40) (25.4) a130 urd 71 tti (160-450) 2.01 1.19 a120 urd 71 tti (550-630) (51) (30.2) a130 urd 72 tti (280-630) 2.36 1.50 a120 urd 72 tti (700-800) (60) (38.1) a130 urd 73 tti (315-900) a110 urd 73 tti (1000) a100 urd 73 tti (1250) 2.93 1.81 a090 urd 73 tti (1400) (74.5) (46) a070 urd 73 tti (1600) a065 urd 73 tti (1800) psc 1250/1300 volt semiconductor protection fuses north american flat single hole, type tti 72.5 max (2.85) 74 (2.91) b a c 5.03 (.20) a 5/16-18 x .23 dp 5/16-18 x .36 dp 3/8-16 x .36 dp 1/2-13 x .36 dp european flat single hole, type ttf catalog dimensions - in/(mm) no. ab c 12,5 urd 70 ttf (050-315) 11 urd 70 ttf (350-400) 12,5 urd 71 ttf (160-450) 11 urd 71 ttf (350-400) 12,5 urd 72 ttf (280-630) 11 urd 72 ttf (700-800) 10 urd 72 ttf (900) 8,5 urd 72 ttf (1000) 12,5 urd 73 ttf (315-800) 12 urd 73 ttf (0900) 10 urd 73 ttf (1000) 9,5 urd 73 ttf (1100) 9 urd 73 ttf (1250) 8,5 urd 73 ttf (1400) 6,6 urd 73 ttf (1600) 6 urd 73 ttf (1800) 40 26 m8 x 1.25 x 9 dp 51 30 m8 x 1.25 x 9 dp 60 38 m10 x 1.5 x 9 dp 74.5 46 m12 x 1.75 x 9 dp size 70 & 71 72 73 2x72 2x73 standard threaded studs p ackaging: 6 pairs ref. and dimension per pair of studs s 98 801 (hc m8 x 30 & m 8 x 35) t 98 802 (hc m 10 x 30 & m 10 x 50) v 98 803 (hc m 12 x 35 & m 12 x 50) w 98 804 (hc m 10 x 50) x 98 805 (hc m 12 x 50) max stud mounting torque (nm) 13 max nut tightening torque (nm) fig1 fig 2 fig 3 13.5 13.5 13.5 26 26 26 46 46 15 26 26 26 46 46 15 weight (g) 23 40 60 50 70 15 types tti and ttf d 80
1250 volt european/iec style ratings and application data psc 1250/1300 volt semiconductor protection fuses pre-arc total i 2 t **watts loss metric body amp rated i 2 t@ r ated @ rated din 110 tapped single size rating voltage (a 2 s x 10 3 ) voltage current catalog no. catalog no. (a 2 s x 10 3 )( w) type d11a type ttf 50 1250 0.116 0.98 16 12,5urd70d11a0050 12,5urd70ttf0050 63 1250 0.21 1.7 26 12,5urd70d11a0063 12,5urd70ttf0063 80 1250 0.47 3.8 27 12,5urd70d11a0080 12,5urd70ttf0080 100 1250 0.83 6.7 30 12,5urd70d11a0100 12,5urd70ttf0100 125 1250 1.3 10.5 38 12,5urd70d11a0125 12,5urd70ttf0125 160 1250 2.55 21 45 12,5urd70d11a0160 12,5urd70ttf0160 70 200 1250 4.7 37.8 54/56 12,5urd70d11a0200 12,5urd70ttf0200 250 1250 9.6 77 58/61 12,5urd70d11a0250 12,5urd70ttf0250 280 1200 14 107 61 12urd70d11a0280 - 280 1250 14 107 64 - 12,5urd70ttf0280 315 1200 20 150 66 12urd70d11a0315 - 315 1250 20 150 72 - 12,5urd70ttf0315 350 1100 28 180 68/75 11urd70d11a0350 11urd70ttf0350 400 1100 39 254 81 11urd70d11a0400 11urd70ttf0400 160 1250 2.6 21 46 12,5urd71d11a0160 12,5urd71ttf0160 200 1250 4.7 38 54 12,5urd71d11a0200 12,5urd71ttf0200 250 1250 8.9 71 61 12,5urd71d11a0250 12,5urd71ttf0250 315 1250 16 130 73/76 12,5urd71d11a0315 12,5urd71ttf0315 350 1250 22 180 76/80 12,5urd71d11a0350 12,5urd71ttf0350 71 400 1250 38 310 76/80 12,5urd71d11a0400 12,5urd71ttf0400 450 1250 47 380 87/95 12,5urd71d11a0450 12,5urd71ttf0450 500 1100 68 440 90/100 11urd71d11a0500 11urd71ttf0500 550 1100 84 540 98/112 11urd71d11a0550 11urd71ttf0550 630 1000 125 810 105 10urd71d11a0630 - 630 1100 125 810 120 - 11urd71ttf0630 280 1250 10 84 72 12,5urd72d11a0280 12,5urd72ttf0280 315 1250 15 122 76 12,5urd72d11a0315 12,5urd72ttf0315 350 1250 21 170 77 12,5urd72d11a0350 12,5urd72ttf0350 400 1250 32.5 270 80 12,5urd72d11a0400 12,5urd72ttf0400 450 1250 44 360 87/89 12,5urd72d11a0450 12,5urd72ttf0450 500 1250 57 460 94/98 12,5urd72d11a0500 12,5urd72ttf0500 550 1250 68 550 110/120 12,5urd72d11a0550 12,5urd72ttf0550 72 630 1100 105 850 113 11urd72d11a0630 - 630 1250 105 850 125 - 12,5urd72ttf0630 700 1000 145 910 122 10urd72d11a0700 - 700 1100 145 910 140 - 11urd72ttf0700 800 1000 215 1400 125 10urd72d11a0800 - 800 1100 215 1400 146 - 11urd72ttf0800 900 1000 312 1800 130 10urd72d11a0900 10urd72ttf0900 1000 850 - - 136 - 8,5urd72ttf1000 315 1250 12 95 84 12,5urd73d11a0315 12,5urd73ttf0315 350 1250 17 140 86 12,5urd73d11a0350 12,5urd73ttf0350 400 1250 25 200 93 12,5urd73d11a0400 12,5urd73ttf0400 450 1250 35.5 290 99/100 12,5urd73d11a0450 12,5urd73ttf0450 500 1250 44 360 110/112 12,5urd73d11a0500 12,5urd73ttf0500 550 1250 57 460 116/120 12,5urd73d11a0550 12,5urd73ttf0550 630 1250 84 680 125/132 12,5urd73d11a0630 12,5urd73ttf0630 700 1200 110 900 135 12urd73d11a0700 - 700 1250 110 900 146 - 12,5urd73ttf0700 800 1100 190 1530 136 11urd73d11a0800 - 73 800 1250 190 1530 148 - 12,5urd73ttf0800 900 1000 250 1870 150 10urd73d11a0900 - 900 1200 250 1870 170 - 12urd73ttf0900 1000 900 370 2130 152 9urd73d11a1000 - 1000 1000 370 2130 174 - 10urd73ttf1000 1100 900 445 2470 168 9urd73d11a1100 - 1100 950 445 2470 208 - 9,5urd73ttf1100 1250 900 585 3050 186/200 - 9urd73ttf1250 1400 850 755 3700 210/228 - 8,5urd73ttf1400 1600 660 1430 5630 203 - 6,6urd73ttf1600 1800 600 2040 7600 206 - 6urd73ttf1800 ** watts loss data is published for both blade and tapped style mounting configurations. when two watts loss values are shown this represents tapped/blade values respectively. d 81 d
psc 1250/1300 volt semiconductor protection fuses 1300 volt north american style ratings and application data pre-arc total i 2 t **watts loss body amp rated i 2 t@ r ated @ rated n.american blade tapped single size rating voltage (a 2 s x 10 3 ) voltage current catalog no. catalog no. (a 2 s x 10 3 )( w) type li type tti 63 1300 0.21 1.8 26 a130urd70li0063 a130urd70tti0063 80 1300 0.47 4 27 a130urd70li0080 a130urd70tti0080 100 1300 0.83 7.2 30 a130urd70li0100 a130urd70tti0100 125 1300 1.3 11 38 a130urd70li0125 a130urd70tti0125 70 160 1300 2.5 22 45 a130urd70li0160 a130urd70tti0160 200 1300 4.7 40 54/56 a130urd70li0200 a130urd70tti0200 250 1300 9.6 82 58/61 a130urd70li0250 a130urd70tti0250 315 1300 20 172 66/72 a130urd70li0315 a130urd70tti0315 350 1200 28 205 68/75 a120urd70li0350 a120urd70tti0350 160 1300 2.6 22 46 a130urd71lli0160 a130urd71tti0160 200 1300 4.7 40 54 a130urd71lli0200 a130urd71tti0200 250 1300 8.9 76 61 a130urd71lli0250 a130urd71tti0250 280 1300 12 102 68/70 a130urd71lli0250 a130urd71tti0250 315 1300 16 138 73/76 a130urd71lli0315 a130urd71tti0315 350 1300 22 190 76/80 a130urd71lli0350 a130urd71tti0350 71 400 1300 38 330 76/80 a130urd71lli0400 a130urd71tti0400 450 1300 47 405 87/95 a130urd71lli0450 a130urd71tti0450 500 1200 68 500 90/100 a120urd71lli0500 a120urd71tti0500 550 1200 84 620 98/112 a120urd71lli0550 a120urd71tti0550 630 1100 125 930 105 a110urd71lli0630 - 630 1200 125 930 120 - a120urd71tti0630 280 1300 10 90 72 a130urd72li0280 a130urd72tti0280 315 1300 15 130 76 a130urd72li0315 a130urd72tti0315 350 1300 21 180 77 a130urd72li0350 a130urd72tti0350 400 1300 32 285 80 a130urd72li0400 a130urd72tti0400 450 1300 44 380 87/89 a130urd72li0450 a130urd72tti0450 500 1300 57 500 94/98 a130urd72li0500 a130urd72tti0500 550 1300 68 590 110/120 a130urd72li0550 a130urd72tti0550 72 630 1200 105 920 113 a120urd72li0630 - 630 1300 105 920 125 - a130urd72tti0630 700 1100 145 1040 122 a110urd72li0700 - 700 1200 145 1040 140 - a120urd72tti0700 800 1100 215 1590 125 a110urd72li0800 - 800 1200 215 1590 146 - a120urd72tti0800 315 1300 12 102 84 a130urd73li0315 a130urd73tti0315 350 1300 17 150 86 a130urd73li0350 a130urd73tti0350 400 1300 25 220 93 a130urd73li0400 a130urd73tti0400 450 1300 35 310 99/100 a130urd73li0450 a130urd73tti0450 500 1300 44 390 110/112 a130urd73li0500 a130urd73tti0500 550 1300 57 500 116/120 a130urd73li0550 a130urd73tti0550 630 1300 84 730 125/132 a130urd73li0630 a130urd73tti0630 700 1300 110 960 135/146 a130urd73li0700 a130urd73tti0700 800 1200 190 1630 136 a120urd73li0800 - 73 800 1300 190 1630 148 - a130urd73tti0800 900 1100 250 2160 150 a110urd73li0900 - 900 1300 250 2160 170 - a100urd73tti0900 1000 1100 370 2430 152/174 a100urd73li1000 a100urd73tti1000 1100 1000 445 2580 168/208 a100urd73li1100 a100urd73tti1100 1250 1000 585 3480 186/200 a100urd73li1250 a100urd73tti1250 1400 900 755 3880 210/228 a090urd73li1400 a090urd73tti1400 1600 700 1430 5630 203 a070urd73li1600 a070urd73tti1600 1800 650 2040 7600 206 A065URD73LI1800 a065urd73tti1800 ** watts loss data is published for both blade and tapped style mounting configurations. when two watts loss values are shown this represents tapped/blade values respectively. d 82
psc 1250/1300 volt semiconductor protection fuses a130 urd 70 & 12,5 urd 70 63 to 350a melting time ?current data peak let-thru current data a130 urd 71 & 12,5 urd 71 160 to 630a melting time ?current data peak let-thru current data d 83 d
psc 1250/1300 volt semiconductor protection fuses a130 urd 72 & 12,5 urd 72 280 to 800a melting time ?current data peak let-thru current data a130 urd 73 & 12,5 urd 73 315 to 1400a melting time ?current data peak let-thru current data d 84
d 85 d psc 1250/1300vac semiconductor protection fuses correction factor to determine clearing i2t value for a fuse operating below its rated voltage example: fuse 350 a in size 30 i p = 10,000a u = 500v at 660 v i 2 t t =80,000 a 2 s t t = 6 ms at 500 v i 2 t t = 80,000 x 0.72 = 57,600 a 2 s t t = 6 x 0.72 = 4.3 ms *curve for fuses page 278 with p 2 t published at 850vac above: correction factor to determine watts loss value of a fuse operating below its rated current. above: determines the peak ars voltage across the fuse terminals as a function of applied voltage. clearing i2t vs. operating voltage watts loss vs. rated current maximum arc voltage vs. system voltage
d 86 top :p r ovides the dc voltage capability of a fuse as a function of circuit time constant. remark: when the fault current di/dt is very large, this condition can be exceeded. it is the case for faults occurring in voltage commutated inverters. below: curves indicating peak arc voltage um which may appear across fuse terminals as a function of the dc working voltage u, for various time constant l/r of fault path. psc 1250-1300volt semiconductor protection fuses dc voltage capability vs. time constant rated current i n (a) 63 80 100 125 160 200 250 280 315 350 400 450 500 550 630 700 800 900 1000 1100 1250 1400 1600 1800 2000 2200 2500 2800 a 270 a 400 a 520 a 700 a 950 a 1300 a 1800 b 2200 b 2600 b 3000 a 950 a 1300 a 1800 a 2000 a 2300 a 2700 b 3500 b 4000 c 4800 c 5200 c 6400 a 1800 a 2200 a 2600 a 3400 b 3800 b 4600 b 5000 b 6200 c 6800 c 8000 a 2000 a 2400 a 3000 a 3500 a 3900 a 4400 a 5300 a 6000 b 8000 b 9000 c 11000 c 12000 c 13500 c 16000 a 4400 a 5200 a 6400 a 7600 a 9200 b 10000 b 12400 c 13600 c 16000 a 6000 a 7000 a 7800 a 8800 a 10600 a 12000 b 16000 b 18000 c 22000 c 24000 d 27000 d 30000 curves (*) and ipm ( 1 ) corresponding to the rating 70 *ipm (a) 71 *ipm (a) 72 *ipm (a) 73 *ipm (a) 2x72 *ipm (a) 2x73 *ipm (a) above: ipm (1) values indicate the minimum breaking current in amperes (a).
d 87 d size catalog no. ref # 12,5 urd 73 ppaf 0315 12,5 urd 73 ppaf 0350 12,5 urd 73 ppaf 0400 12,5 urd 73 ppaf 0450 12,5 urd 73 ppaf 0500 12,5 urd 73 ppaf 0550 12,5 urd 73 ppaf 0630 12,5 urd 73 ppaf 0700 12,5 urd 73 ppaf 0800 12 urd 73 ppaf 0900 10 urd 73 ppaf 1000 9,5 urd 73 ppaf 1100 9 urd 73 ppaf 1250 8,5 urd 73 ppaf 1400 12,5 urd 272 ttf 0630 12,5 urd 272 ttf 0700 12,5 urd 272 ttf 0800 12,5 urd 272 ttf 0900 12,5 urd 272 ttf 1000 12,5 urd 272 ttf 1100 11 urd 272 ttf 1250 11 urd 272 ttf 1400 10 urd 272 ttf 1600 9 urd 272 ttf 1800 7,5 urd 272 ttf 2000 6,5 urd 272 ttf 2200 6,5 urd 272 ttf 2500 12,5 urd 273 ttf 0700 12,5 urd 273 ttf 0630 12,5 urd 273 ttf 0700 12,5 urd 273 ttf 0630 12,5 urd 273 ttf 0700 11 urd 273 ttf 0630 11 urd 273 ttf 0700 11 urd 273 ttf 0630 10 urd 273 ttf 0700 9,5 urd 273 ttf 0630 9,5 urd 273 plaf 0700 9 urd 273 plaf 0630 8,5 urd 273 plaf 0700 6 urd 273 plaf 0630 6 urd 273 plaf 0700 5,5 urd 273 plaf 0630 h300640 j3002641 k300642 l300643 m300644 n300645 p300646 q300674 r300648 s300649 t300650 v300651 t300719 v300720 w300721 x300722 y300723 z300724 a300725 b300726 - d300728 - e301994 f301975 g301996 h301997 f301730 g301731 h301732 j300733 k300734 - - - p300738 q300739 m301909 r300740 s300741 k301999 m302001 n302002 weight (g) 1 1-3 p ack. 1250 1750 1900 2600 2800 2700 73 2 x 72 psc 1250-1300volt semiconductor protection fuses 1 2 x 73 size a b c d e f g h j k d e l m n 2x72 ttf 60 138,5 172 11 91 65,5 100 35 66 39 m 10 4 131 48 72 2x73 ttf 74,5 167 200 13 91 79,6 114 50 80 39 m 12 4 131 54 86 dimensions in mm microswitches and threaded studs supplied separately (see pages 420 and 422
psc 1250/1300 (2x72) semiconductor protection fuses d 88 t ime-current characteristics above, left: curves idicating pre-arcing time for each rated current as a function of rms value of pre-arcing current i. - tolerances on this current 8%. - beyond 30 sec or 10 sec, small overloads must be eliminated by another device - curve cc?represents the maximum times taken by the associated device to clear small overloads; only its horizontal line is represented. its oblique line must be plotted according to sketch, top right corner. - the intersection of the fuse and cc?curves indicates the minimum breaking current i pm of the fuse. - + maximum values of total operating i 2 t and total operating times l eft: horizontal curves indicating the maximum values of total operating i2t (i2tt) as function of the prospective current ip at 660 v, cos w = 0.15. the oblique lines indicate the corresponding total operating time tt, with pre-arching time in brackets. melting time current data p eak let thru current data clearing i 2 t data
pcs 1250/1300 (2x73) semiconductor protection fuses d 89 d t ime-current characteristics above, left: curves idicating pre-arcing time for each rated current as a function of rms value of pre-arcing current i. - tolerances on this current 8%. - beyond 30 sec small overloads must be eliminated by another device - the intersection of the fuse and cc?curves indicates the minimum breaking current of the fuse. - + maximum values of total operating i 2 t and total operating times l eft: horizontal curves indicating the maximum values of total operating i2t (i2tt) as function of the prospective current ip at 660 v, cos w = 0.15. the vertical lines indicate the corresponding total operating time tt, with pre-arcing time in brackets. melting time current data p eak let thru current data clearing i 2 t data

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