e e 25 amp-trap a240r/a480r/a072f/a072b med. voltage fuses / r-rated applications: ? short circuit protection of medium voltage motors and motor controllers ? a240r ac: 2r to 36r 2750v, 45ka i.r. sym. ? a480r ac: 2r to 36r 5500v, 63ka i.r. sym. ? a072f, a072b ac: 2r to 24r 7200v, 50ka i.r. sym. ratings r-rated motor starter fuses amp-trap r-rated fuses are current-limiting, high interrupting rating fuses intended for the short-circuit protection of medium voltage motors and motor controllers. r-rated fuses are back up fuses that have a minimum interrupting rating, and must be coordinated with overload relays in combination motor starters. the motor starter manufacturer generally specifies the r-rated fuse size. amp-trap r-rated fuses are rated 2r to 36r, at 2.4, 4.8, and 7.2kv. 4.8 and 7.2kv fuses are ul recognized. the 4.8kv (a480r) is available with hookeye tab. the 7.2kv (a072f) series has the same dimensions as the 4.8kv (a480r), allowing smaller 7.2kv equipment or 4.8kv upgrades. the a072b is available as a bolt in version ? ferraz shawmut certified a240r @ 2750v, 45ka, sym. ? ul recognized component a480r @ 5080v, 50ka, sym. a072 @ 7200v, 50ka, sym. approvals highlights: ? r-rated ? ul recognized in 4.8 and 7.2kv ratings features / benefits ? ferrule mounting for standard clips and interchangeability with other brands of fuses ? 7.2kv a072f series has the same dimensions as 4.8kv fuses, allowing compact, higher voltage rated designs ? a072b optional bolt-in design for improved design flexiblity ? optional hookeye on a480r for non load-break isolation by hookstick
e 26 amp-trap a240r medium voltage fuses / r-rated 2.4kv ferrule style catalog numbering system, ratings, dimensions, 2.4kv catalog continuous minimum 1 phase interrupting rating number ampere interrupting maximum rating dim. rating tested fig. standard size at 40? l rms amperes rms asym rms sym a240r a240r2r 2r 70 170 a240r3r 3r 100 250 a a240r4r 4r 130 340 a240r6r 6r 170 10-7/8 500 70ka 45ka a240r9r 9r 200 (276mm) 760 @ @ a24or12r 12r 230 1000 2750v 2750v b a24or18r 18r 390 1500 a240r24r 24r 450 1950 c a240r36r 36r** 650 2900 * this rating defines the fuse? long-term thermal capability per ansi c37. 46-1 and should not be the sole factor for selecting a specific r rating. ** not recommended for use in fuse clips which grasp only one barrel. indicator flush with surface 2 lb. force (tripped) 0.5 (12.7) 3 (76) 3 (76) 3 (76) 3.312 (84.1) 3.312 (84.1) l l l 0.5 (12.7) 0.5 (12.7) 3.312 (84.1) 3 (76) 3 (76) 3 (76) 3 (76)
e e 27 amp-trap a240r medium voltage fuses / r-rated minimum melting time ?current data, 2.4kv fuses time in seconds current in amperes time in seconds current in amperes a240r, 2400 volts total clearing time ?current data, 2.4kv fuses a240r, 2400 volts
amp-trap a240r medium voltage fuses / r-rated e 28 peak let-thru current data, r-rated fuses available current in rms symmetrical amperes maximum instantaneous peak let-thru amperes a240r, 2400 volts
amp-trap a480r medium voltage fuses / r-rated e 29 e 4.8kv ferrule style catalog numbering system, ratings, dimensions, 4.8kv catalog continuous minimum 1 phase interrupting rating number ampere interrupting ul component maximum rating dim. rating recognition tested fig. standard size at 40? l rms amperes rms asym rms sym rms asym rms sym a480r-1 a480r2r-1 2r 70 190 a480r3r-1 3r 100 225 a480r4r-1 4r 130 330 a a480r5r-1 5r 150 400 80ka 50ka 100ka 63ka a480r6r-1 6r 170 15-7/8 500 @ @ @ @ a480r9r-1 9r 200 (403mm) 740 5080v 5080v 5500v 5500v a480r12r-1 12r 230 955 b a480r18r-1 18r 390 1440 a480r24r-1 24r 450 1910 c a480r36r-1 36r** 650 2810 a480r-1he with hookeye a480r2r-1he 2r 70 190 a480r3r-1he 3r 100 225 a480r4r-1he 4r 130 330 a a480r5r-1he 5r 150 16-1/8 400 80ka 50ka 100ka 63ka a480r6r-1he 6r 170 (410mm) 500 @ @ @ @ a480r9r-1he 9r 200 740 5080v 5080v 5500v 5500v a480r12r-1he 12r 230 955 b a480r18r-1he 18r 390 1440 a480r24r-1he 24r 450 1910 * this rating defines the fuse? long-term thermal capability per ansi c37 46-1981 and should not be the sole factor for selecti ng a specific r rating. ** not recommended for use in fuse clips which grasp only one barrel. l 3 (76) 1.0 (25.4) 0.34 dia. typ. (8) blown fuse indicator (tripped position) 3.312 (84.1) 3.312 (84.1) 3.312 (84.1) l l blown fuse indicator 2lb. force (tripped) 0.5 (12.7) 3 (76) 3 (76) 3 (76) 3 (76) 3 (76) 0.5 (12.7) 0.5 (12.7)
e 30 amp-trap a480r medium voltage fuses / r-rated minimum melting time ?current data, 4.8kv fuses time in seconds current in amperes time in seconds current in amperes total clearing time ?current data, 4.8kv fuses a480r-1, a480r-1he, 4800 volts a480r-1, a480r-1he, 4800 volts
e e 31 amp-trap a480r medium voltage fuses / r-rated peak let-thru current data, r-rated fuses available current in rms symmetrical amperes maximum instantaneous peak let-thru amperes a480r-1 and a480r-1he, 4800 volts
e 32 amp-trap a072f/ a072b medium voltage fuses / r-rated 7.2kv ferrule & bolt-in types a 0 7 2 f 1 d 0 r 0 - 12r r rating revision/no. special features diameter (d=3? no. of barrels style (f=ferrule , b=bolt-in mount) nominal voltage rating (072=7.2kv) amp-trap fuse catalog numbering system catalog numbers, ratings, dimensions, 7.2kv allowable minimum 1 phase interrupting rating continuous interrupting ul component recognition catalog ampere rating rating fig. number rating at 40? rms amperes rms asym. rms sym. ferrule type a072f1doro-2r 2r 70 190 a072f1doro-3r 3r 100 225 a072f1doro-4r 4r 130 330 a a072f1doro-5r 5r 150 400 80ka 50ka a072f1doro-6r 6r 170 500 @ @ a072f1doro-9r 9r 200 740 7200v 7200v a072f1doro-12r 12r 230 955 b a072f2doro-18r 18r 390 1440 a072f2doro-24r 24r 450 1910 bolt-in type a072b1daro-2r 2r 70 190 a072b1daro-3r 3r 100 225 a072b1daro-4r 4r 130 330 80ka 50ka c a072b1daro-5r 5r 150 400 @ @ a072b1daro-6r 6r 170 500 7200v 7200v a072b1daro-9r 9r 200 740 a072b1daro-12r 12r 230 955 d a072b2daro-18r 18r 390 1440 a072b2daro-24r 24r 450 1910 blown fuse indicator extends 0.5 in. (12.7mm) when fuse opens, with 2 lbs. of force at end of travel (413.1) (6.3) 16.26 (413.1) 7.62 (194) 19.25 (488) 17.88 (454.2) 1.53 (38.8) .44 x .91 (11 x 23) .25 (6.3) 16.26 (92.2) 3.63 .25 (76.2) 3.00 (76) (76) 3 3 15.88 (403) 15.88 (403) 3 3 (76) 3 3.312 (84.1) 0.5 (12.7) 0.5 (12.7)
e e 33 amp-trap a072f/ a072b medium voltage fuses / r-rated minimum melting time ?current data, 7.2kv fuses time in seconds current in amperes time in seconds current in amperes a072f2 and a072b, 7200 volts total clearing time ?current data, 7.2kv fuses a072f and a072b, 7200 volts
e 34 amp-trap a072f/ a072b medium voltage fuses / r-rated peak let-thru current data, r-rated fuses available current in rms symmetrical amperes maximum instantaneous peak let-thru amperes ao72f and a072b2, 7200 volts
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