? ac: 10-30a 300vac, 50ka i.r. 35-60a 250 vac, 100ka i.r. 70-800a 250vac, 10,600 a i.r. 1000-4500a 250vac ratings features / benefits ? low l 2 t minimizes damage to protected component on short circuit ? controlled arc voltage reduces stress to circuit components during fuse clearing ? choice of mounting types helps in equipment design a25x amp-trap form 101 semiconductor protection fuses were designed for heavy duty rectifiers such as those used in the electro-chemical industry. originally designed for diode protection, a25x fuses have been particularly reliable in heavy duty applications of many types. note: recommended as replacement fuses only ? ul recognized component ? ac: ul guide no. jfhr2 (10-250a) approvals applications: ? protection of 250 volt heavy duty rectifiers and similar heavy power supplies a 25 x 600 - 4 ti amp-trap fuse rated volts - 250 style amperes* mounting types* ferrule blades, bolt-in hockey puck, bolt-in integral blown-fuse indicator trigger indicator trigger actuator * for ampere ratings and types not listed, consult the factory. catalog numbering system a 25 x 600 1 4 128 ti ta fuse fuse block ampere catalog rating number 1-30 20306 31-60 p243g 61-100 p243 101-200 p243 201-400 p243g 401-700 p243g single pole fuse blocks for a25x fuses highlights: ? fast acting ? current limiting ? low l 2 t ? indicator options available amp-trap form 101 a25x semiconductor protection fuses d 6
standard fuse ampere ratings, catalog numbers for ampere ratings and styles not listed, call technical services. amp-trap form 101 a25x semiconductor protection fuses dimensions outline mounting fig. dimensions - inches (mm) tap ref. type a b c d e f g h a25x1 to 30 1 1 2.00 0.56 - - - - - - - (50.8) (14.2) - - - - - - - a25x35 to 60 4 2 3.19 0.81 1.63 2.50 2.25 0.34 0.72 0.13 - (81.0) (20.6) (41.4) (63.5) (57.5) (8.6) (18.3) (3.3) - a25x70 to 200 4 3 3.13 1.22 1.63 2.44 2.31 0.31 1.00 0.19 - (79.5) (31.0) (41.4) (62.0) (58.7) (7.9) (2.54) (4.8) - a25x225 to 700 4, 4ta* 3, 4* 3.84 1.50 1.59 2.91 2.28 0.41 1.00 0.25 - (97.5) (38.1) (40.1) (73.9) (57.9) (10.4) (25.4) (6.4) - a25x800 4, 4ta* 3, 4* 3.84 2.00 1.59 2.91 2.28 0.41 1.50 0.25 - (97.5) (50.8) (40.4) (73.9) (57.9) (10.4) (38.1) (6.4) - a25x700 to 1200 128 5 2.59 3.00 2.34 2.50 1.50 - - - 3/8-24-1/2 deep (65.8) (76.2) (59.4) (63.5) (38.1) - - - - a25x1500 to 2500 128, 128ta* 6, 7* 2.59 3.50 2.34 3.00 1.50 1.50 - - 3//8-24-1/2 deep (65.8) (88.9) (59.4) (76.2) (38.1) (38.1) - - - a25x3000 to 4500 128, 128ta* 6, 7* 2.59 4.50 2.34 3.75 1.50 1.50 - - 1/2-20-1/2 deep (65.8) (114) (59.4) (95.3) (38.1) (38.1) - - - * optional trigger actuator (ta) figure 2 figure 3 figure 1 figure 4 figure 5 figure 6 figure 7 ampere catalog outline ampere catalog outline ampere catalog outline ampere catalog outline rating number fig. rating number fig. rating number fig. rating number fig. 1 2 3 4 5 6 7 8 9 10 12 15 20 25 30 35 40 50 60 70 80 a25x1-1 a25x2-1 a25x3-1 a25x4-1 a25x5-1 a25x6-1 a25x7-1 a25x8-1 a25x9-1 a25x10-1 a25x12-1 a25x15-1 a25x20-1 a25x25-1 a25x30-1 a25x35-4 a25x40-4 a25x50-4 a25x60-4 a25x70-4 a25x80-4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 3 3 90 100 100 100 125 130 150 150 150 175 200 200 200 225 250 250 300 300 300 350 400 3 3 4 3 3 3 3 4 3 3 3 4 3 3 3 3 3 4 3 3 3 a25x90-4 a25x100-4 a25x100-4ta a25x100-4ti a25x125-4 a25x130-4 a25x150-4 a25x150-4ta a25x150-4ti a25x175-4 a25x200-4 a25x200-4ta a25x200-4ti a25x225-4 a25x250-4 A25X250-4TI a25x300-4 a25x300-4ta a25x300-4ti a25x350-4 a25x400-4 400 400 450 500 500 500 550 600 600 600 700 700 800 800 800 1000 1000 1200 1500 1500 1600 4 3 3 3 4 3 3 3 4 3 3 5 3 4 5 5 5 6 7 6 a25x400-4ta a25x400-4ti a25x450-4 a25x500-4 a25x500-4ta a25x500-4ti a25x550-4 a25x600-4 a25x600-4ta a25x600-4ti a25x700-4 a25x700-128 a25x800-4 a25x800-4ta a25x800-128 a25x1000-128 a25x1200-128 a25x1500-128 a25x1500-128ta a25x1600-128 2000 2000 2500 2500 3000 3500 3500 4000 4500 6 7 6 7 6 6 7 6 6 a25x2000-128 a25x2000-128ta a25x2500-128 a25x2500-128ta a25x3000-128 a25x3500-128 a25x3500-128ta a25x4000-128 a25x4500-128 d 7 d
melting time ?current data , 250v fuses time in seconds current in amperes time in seconds current in amperes melting time ?current data, 250v fuses a25x1 to 60 a25x70 to 4500 amp-trap form 101 a25x semiconductor protection fuses d 8
peak let-thru current data ?a25x1 to 60, 250volts ac available current in rms symmetrical amperes maximum instantaneous peak let-thru amperes peak let-thru current data ?a25x70 to 4000, 250 volts ac available current in rms symmetrical amperes maximum instantaneous peak let-thru amperes amp-trap form 101 a25x semiconductor protection fuses d 9 d
ampere watts ampere watts ampere watts rating loss (w) rating loss (w) rating loss (w) 70 4.4 250 19 1000 57 80 5.1 300 22 1200 70 90 5.5 350 26 1500 88 100 6.5 400 30 2000 122 125 7.6 450 32 2500 142 150 9.3 500 37 3000 164 175 11 600 45 3500 191 200 13 700 55 4000 198 225 15 800 51 4500 211 5000 228 watts loss at rated current percent rated current correction factor for watts loss watts loss correction vs. percent rated current i 2 t data ?250 volts ac i 2 t data fuse clearing at 250v ampere melting 1 fuse 2 fuses in rating (fig. a) series (fig. b) (a 2 s) (a 2 s) (a 2 s) 1 .033 .27 .18 2 .17 1.5 .98 3 .32 3.8 2.5 4 .85 6.9 4.6 5 1.3 8.7 5.8 6 1.9 9.6 6.4 7 2.7 13 8.4 8 5.0 24 16 9 8.6 31 21 10 13 39 26 12 18 54 36 15 20 60 40 20 36 110 72 25 56 170 110 30 81 240 160 35 95 540 380 40 120 690 460 50 190 960 640 60 280 1,400 960 70 420 3,500 2,100 80 550 4,600 2,300 90 700 5,800 2,500 100 860 7,200 3,000 125 1,300 11,000 4,100 150 2,000 16,000 6,000 175 2,600 22,000 8,000 200 3,400 29,000 11,000 225 4,300 36,000 13,000 250 5,400 45,000 16,000 300 7,700 65,000 24,000 350 11,000 88,000 32,000 400 14,000 110,000 42,000 450 18,000 140,000 53,000 500 22,000 180,000 66,000 600 31,000 260,000 95,000 700 42,000 350,000 130,000 800 55,000 460,000 170,000 1,000 86,000 720,000 260,000 1,200 125,000 1,000,000 380,000 1,500 200,000 1,600,000 600,000 1,600 220,000 1,800,000 680,000 2,000 350,000 2,900,000 1,100,000 2,500 550,000 4,500,000 1,600,000 load 250 vac fault fig. a load 250 vac fault fig. b amp-trap form 101 a25x semiconductor protection fuses d 10
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