BS 88 gg and gm Industrial fuses A, B and C types - gg curve Applications Power cable protection Distribution panel protection Control Panel Main circuit Distribution panel Lighting, heating and electrical equipments Capacitor, Circuit breakers, batteries DC circuit protection. The fuse complies with standard EN 60269-2 section II and standard BS 88 part 2. These fuses are designed for : - General purpose use protection (gg type) - motor protection (gm type) This fuse range insures an excellent current limitation for all overloads on a large range of applications. Their size cannot allow exchange by other fuses of higher rating in their range. They are screwed into fuseholders or bolted directly onto busbars, or in fuse interruptors disconnectors. Features Approval Fast gg curve Asta 20 Certified Very current limiting Tested in DC Voltage 45VAC and 250VDC High breaking capacity : 80kA @ 45VAC and 40kA @ 250VDC tested A type : bracket connection, B type : blade with single central fixing hole connection C type : blade with two central fixing hole connection. Ratings A type A : from 2A to 32A A2 : from 2A to 32A A3 : from 40A to 0A A4 : from 32A to 0A Overrating till 200A B type B : from 32A to 0A B2 : from 25A to 200A B3 : from 250A to 35A B4 : from 355A to 400A C type C : from 355A to 400A C2 : from 450A to 630A C3 : from 670A to 800A A and B types - gm curve Applications Motor protection Inductive load protections Transient overloads Electrical equipment using motors protection Capacitor Features Fast curve gm Very current limiting Voltage 45VAC High breaking capacity : 80kA @ 45VAC tested A type : bracket connection, B type : blade with single central fixing hole connection Approval Asta 20 Certified Ratings A type A : 20A A2 : 30A A3 : 63A A4 : 0A and 200A B type B : 0A B2 : 200A B3 : 35A 43
Standard fuse ampere rating A, B and C types - gg curve A type A 2 N226263 2A A 4 P226264 4A A 6 Q226265 6A A R226266 A A 6 S226267 6A A 20 T226268 20A A 25 V226269 25A A 32 W226270 32A A2 2 Z226273 2A2 A2 4 A226274 4A2 A2 6 B226275 6A2 A2 C226276 A2 A2 6 D226277 6A2 A2 20 V227833 20A2 A2 25 E226278 25A2 A2 32 F226279 32A2 A3 40 L226284 40A3 A3 50 M226285 50A3 A3 63 N226286 63A3 A3 80 P226287 80A3 A3 0 Q226288 0A3 A4 32 T22629 32A4 5 A4 40 V226292 40A4 5 A4 50 W226293 50A4 5 A4 63 X226294 63A4 5 A4 80 Y226295 80A4 5 A4 0 Z226296 0A4 5 A4X* 25 D226300 25A4X 5 A4X* 60 E22630 60A4X 5 A4X* 200 F226302 200A4X 5 B type BX* 32 J226305 32BX BX* 40 K226306 40BX BX* 50 L226307 50BX BX* 63 M226308 63BX B 80 N226309 80B 5 B 0 P2263 0B 5 B2 25 T22634 25B2 5 B2 60 V22635 60B2 5 B2 200 W22636 200B2 5 B3 250 Z22639 250B3 B3 35 A226320 35B3 B3X* 250 C226322 250B3X B3X* 35 D226323 35B3X B4 355 E226324 355B4 B4 400 F226325 400B4 C type C 355 G226326 355C C 400 H226327 400C C2 450 J226328 450C2 C2 500 K226329 500C2 C2 560 L226330 560C2 C2 630 M22633 630C2 C3 670 N226332 670C3 C3 7 P226333 7C3 C3 750 Q226334 750C3 C3 800 R226335 800C3 A and B types - gm curve A type A 20M25 X22627 20M25A A 20M32 Y226272 20M32A A2 32M40 G226280 32M40A2 A2 32M50 H22628 32M50A2 A2 32M63 K226283 32M63A2 A3 63M80 R226289 63M80A3 A3 63M0 S226290 63M0A3 A4 0M25 A226297 0M25A4 5 A4 0M60 B226298 0M60A4 5 A4 0M200 C226299 0M200A4 5 A4X 200M250 G226303 200M250A4X A4X 200M35 H226304 200M35A4X B type B 0M25 Q2263 0M25B 5 B 0M60 R22632 0M60B 5 B 0M200 S22633 0M200B 5 B2 200M250 X22637 200M250B2 B2 200M35 Y22638 200M35B2 B3 35M400 B22632 35M400B3 44
Dimensions A type Ref. BS 88 A A2 2, 4, 6,, 6, 20, 25*, 32*, 20M25, 20M32 2, 4, 6,, 6, 20, 25, 32, 32M40, 32M50, 32M63 A3 40, 50, 63 A3 80*, 0*, 63M80, 63M0 A4 32, 40, 50, 63 A4 80, 0 A4X 25, 60, 200, 0M25, 0M60, 0M200 A4X 200M250*, 200M35* B type Ref. BS 88 BX 32, 40, 50, 63 B 80, 0 B 0M25, 0M60, 0M200 B2 25, 60, 200 B2 B3 250, 35 B3 200M250, 200M35 35M400 B3X 250, 35 B4 355, 400 Current ratings (A) Current ratings (A) Dimensions (mm & In) A max B max D max E max F nom G nom H nom J nom K max mm 33 2,7 56 9,5 0,8 44,25 4,8 couteau In -/4 /2 2-3/6 3/8 /32-3/4 3/6 ouvert 4,3 9/6 mm 49 22 86 9,2 73 5,5 8 24 In -5/6 7/8 3-3/8 /32 3/64 2-7/8 7/32 5/6 5/6 mm 49 22 89 3,2 73 5,5 couteau In -5/6 7/8 3-/2 /2 3/64 2-7/8 7/32 ouvert 24 5/6 mm In 49-5/6 26 -/32 89 3-/2 3 /2,2 3/64 73 2-7/8 5,5 7/32 couteau ouvert 28-3/32 mm 5 22 20 2,4 94 8,7 25,4 In 2 7/8 4-5/6 3/4 3/32 3-/6 /32 7/6 mm 5 26 20 2,4 94 8,7 29 In 2 -/32 4-5/6 3/4 3/32 3-/6 /32 7/6 -/8 mm 5 35 20 2,4 94 8,7 38 In 2-3/8 4-5/6 3/4 3/32 3-/6 /32 7/6 -/2 mm 5 4 20 2,4 94 8,7 45 In 2-5/8 4-5/6 3/4 3/32 3-/6 /32 7/6-3/4 Dimensions (mm & In) A max B max D max E max F nom G nom H nom I nom mm 45 22 37 5,4 8,7 4 in -3/4 7/8 5-3/8 9/6 3/64 4-3/8 /32 9/6 mm 45 26 37 20 3,2 8,7 4 in -3/4 /32 5-3/8 3/4 /8 4-3/8 /32 9/6 mm 45 35 37 20 3,2 8,7 4 in -3/4-3/8 5-3/8 3/4 /8 4-3/8 /32 9/6 mm 45 35 37 20 3,2 8,7 4 in -3/4-3/8 5-3/8 3/4 /8 4-3/8 /32 9/6 mm 45 4 37 26 3,2 8,7 4 in -3/4-5/8 5-3/8 -/32 /8 4-3/8 /32 9/6 mm 45 4 37 26 3,2 8,7 4 in -3/4-5/8 5-3/8 -/32 /8 4-3/8 /32 9/6 mm 45 5 37 26 6,4 8,7 4 in -3/4 2 5-3/8 -/32 /4 4-3/8 /32 9/6 mm 45 4 59 26 3,2 33,3 4 in -3/4-5/8 6-/4 -/32 /8 5-/4 3/32 9/6 mm 52 5 37 26 6,4 8,7 6 in 2-/6 2 5-3/8 -/32 /4 4-3/8 /32 5/8 C type Ref. BS 88 C 355*, 400 C2 450*, 500, 560*, 630 C3 670*, 7, 750*, 800 Current ratings (A) Dimensions (mm & In) A max B max D max E max F nom G nom H nom J nom L nom mm 52 5 2 26 6,3 33,3 6 25,4 In 2-/6 2 8-/4 -/32 /4 5-/4 3/32 5/8 mm 54 6 2 26 7,8 33,3 6 25,4 In 2-/8 2-3/8 8-/4 -/32 5/6 5-/4 3/32 5/8 mm 56 73 2 26 9,5 33,3 6 25,4 In 2-/6 2 8-/4 -/32 3/8 5-/4 3/32 5/8 45
gg and gm fuse-link selection Fuse-link selection for 3 phase 45 V AC induction motor circuit Motor rating Direct-on-line start (7 x FLC for sec) Fuse-link rating (amperes) Assisted start (3,5 x FLC for 20 sec) Fuse-link rating (amperes) kw HP In gg gm gg gm 0,75 2 6-4 -,,5 2,5-6 -,5 2 3,5-6 - 2,2 3 5 6 - - 3 4 6,5 20-6 - 4 5 8 25 20M25 6-5,5 7,5 32 20M32 20-7,5 4 40 32M40 25 20M25 3,5 9 50 32M50 32 20M32 5 2 50 32M50 32-5 20 28 63 32M63 40 32M40 8,5 25 35 80 63M80 50-22 30 4 0 63M0 50-26 35 48 0 63M0 63-30 40 55 25 0M25 80 63M80 33 45 62 60 0M60 80 63M80 37 50 69 60 0M60 0-45 60 83 200 0M200 0-53 70 97 200 0M200 25 0M25 55 75 0 200 0M200 25 0M25 60 80 250 200M250 60-67 90 20 250 200M250 60-75 0 35 250 200M250 60-90 20 60 35 200M35 200-93 25 70 355* 35M400* 200-50 200 400 35M400* 250 200M250 30 75 230 400 35M400* 35-50 200 260 450* 400M500* 35-60 25 280 500 400M500* 355* 35M400* 70 225 290 500 400M500* 355* 35M400* 80 250 320 560* - 400-200 270 350 630-400 - 220 300 380 670* - 450 400M500* 250 335 420 7* - 500-260 350 450 750* - 560* - 300 400 500 800-630 - Maximum full load current starting capability Direct-on-line start (7 x FLC for sec) Fuse-link rating (amperes) Maximum motor gg gm In 2-0,6 4 -,3 6-2,3-4, 6-6,0 20-7,9 25 20M25 32 20M32 3 40 32M40 8 50 32M50 26 63 32M63 30 80 63M80 40 0 63M0 54 25 0M25 6 60 0M60 82 200-250 200M250 50 35 200M35 70 355* 35M400* 200 400 35M400* 240 450* 400M500* 280 500 400M500* 3 560* - 350 630-380 670* - 420 7* - 450 750* - 480 800-5 Assisted start (3,5 x FLC for 20 sec) Fuse-link rating (amperes) Maximum motor gg gm In 2 -,3 4-2,4 6-4,3-6,4 6-20 - 4 25 20M25 9 32-24 40 32M40 3 50-46 63-5 80-69 0-94 25-60 - 50 200-80 250-220 35-250 355* - 3 400-340 450* 400M500* 380 500-430 560* - 460 630-500 670* - 530 7* - 550 750* - 570 800-600 gm This data is based upon normal starting conditions and usual efficiency and power factor. Conditions such as long run-up times, large numbers of start in succession, high ambient temperature or abnormal transients during start/delta switching may necessitate adjustments to fuse-link selection. 46
20000 4 hours 000 gg Pre-arcing time (sec) 00 Fuse-link rating (A) 0 0, 0,005 0 00 000 0000 Prospective current (R.M.S. symmetrical A) 20000 4 heures 000 gm 00 Fuse-link rating (A) Temps de préarc (A) Pre-arcing time (s) Time/current data 0 0, 0,005 0 00 Courant présumé symétrique en A) A) Prospective current(r.m.s. (R.M.S. symmetrical Curves from BS88 standard part and 2 (sections 2. and 2.2) of 988. Voltage rating : 45 V. Interrupting rating : 80 ka under 45 V. 47 000 0000
I 2 t (A 2 S) I 2 t characteristics 7 6 5 4 3 2 0 Fuse-link rating (amperes) * Current ratings additional to BS88 Dissipated power 70 Operating I 2 t at 45 V. Pre-arcing I 2 t 60 Power (Watts) 50 40 30 BS 88 part 2 (Section 2.2) standardized limit 20 0 * Current ratings additional to BS88 Fuse-link rating (Amperes) 48
Peak let-through current Nominal current derating by temperature Fuse-link rating (A) Maximum value of current (ka peak) Current carrying capability (in amperes) at elevated temperatures 40 C 45 C 50 C 55 C 60 C 65 C 70 C 75 C 80 C 2, 4, 6, 6 5 20 8 6 25 23 2 9 32 3 30 29 40 39 38 37 50 49 48 47 63 6 59 57 80 79 78 76 0 98 96 94 25 FUSE-LINKS 22 9 6 60 FULLY RATED 55 50 45 40 200 95 90 85 80 75 250 240 230 220 2 200 35 3 300 290 270 250 355* 345 335 320 300 280 400 390 380 370 350 330 3 450* 445 430 4 390 370 350 500 490 480 460 440 420 400 560* 550 530 5 490 470 450 630 620 6 590 570 550 530 5 490 670* 660 640 620 600 580 560 540 520 7* 700 680 660 640 620 600 580 560 750* 740 730 7 690 670 650 630 600 800 780 760 740 720 700 680 660 640 Prospective current (ka R.M.S. symmetrical) * Current ratings additional to BS88 Curves and derating comply with BS88 standard part and 2 sections 2. and 2.2 of 988. * Derating also applies, to additional current ratings. - When the fuse-link is mounted in the open, the elevated temperature is the ambient air temperature (Ta). - When the fuse-link is mounted in an enclosure, the elevated temperature is the internal fluid environment temperature (Te) within the enclosure. When it is not known, it should be assumed to be 5 C higher than the ambient air temperature external to the enclosure, i.e. Te = Ta + 5 C. Examples : - 0 fuse-link mounted in the open at an ambient air temperature of 65 C. Current carrying capability = 0A. - 200A fuse-link mounted in the open at an ambient air temperature of 60 C. Current carrying capability = 95A. - 400A fuse-link mounted in an enclosure having an internal temperature of 65 C. Current carrying capability = 370A. - 800A fuse-link mounted in an enclosure with an unknown internal temperature and an external ambient air temperature of 40 C. Assume the internal temperature is 55 C (40 C + 5 C). Current carrying temperature = 740A. 49
Industrial fuses BS 88 gg and gm - F and F2 types Applications Power cable protection Distribution panel protection Control panel Main circuit Lighting, heating and electrical equipments Capacitor, batteries Can be used with circuit breakers. Ratings F type from 2A to 32A The fuse comply with standard EN 60269-2 section II and standard BS88 part 2. This fuses are designed for : - general purpose use protection, (gg type) - motor protection (gm type) This fuse range insures an excellent current limitation for all overloads on a large range of applications. Their size cannot allow exchange by other fuses of higher rating in the F type range. They are compact and can be connected with clips. Features Compact design Curve gg and gm Very current limiting Tested in DC Voltage 45VAC High breaking capacity : 80kA @ 45VAC Connection by clips or appropriate fuse holders. Approval Asta 20 Certified F2 type from A to 63A Fuses designations and ratings F type F 2 S226336 2F F 4 T226337 4F F 6 V226338 6F F W226339 F F 6 X226340 6F F 20 Y22634 20F F 25 Z226342 25F F 32 A226343 32F F* 20M25 B226344 20M25F F* 20M32 C226345 20M32F F2 type F2 D226346 F2 F2 6 E226347 6F2 F2 20 F226348 20F2 F2 25 G226349 25F2 F2 32 H226350 32F2 F2 40 J22635 40F2 F2 50 K226352 50F2 F2 63 L226353 63F2 * Selection table for gm fuses : refer to A, B and C types 50
Dimensions Ref. BS 88 Time/current data 20000 4 hours 000 Voltage (Vac) F 45V 2, 4, 6,, 6, 20, 25, 32, 20M25*, 20M32* F2 45V, 6, 20, 25, 32, 40, 50, 63 Current ratings (A) * Current ratings additional to BS88 also comply to the BS 88 standard part 6 of 988. Dimensions (mm) A max B max D max E max F nom N nom mm 35,5 4,3 62,5 0,8 3,5 in -2/5 9/6 2-7/6 9/20 /32 /8 mm 39 7,5 69 5,4 3,5 In -7/3 /6 2-3/8 9/6 /8 /8 00 Pre-arcing time (sec.) 0 Fuse-link ampere rating 0, 0,0 0,005 0 00 Prospective current (RMS symmetrical A) 000 0000 Ip 5
I 2 t (A 2 S) I 2 t characteristics 7 6 5 4 3 2 0 2 Operating I 2 t at 45 V. pre-arcing I 2 t 4 6 Fuse-link rating (Amperes) Curves from BS88 standard part 6 of 988. Voltage rating : 45 VAC. Interrupting rating : 40 ka under 45 VAC. 20 6 * Current ratings additional to BS88 also comply to the BS 88 standard part 6 of 988. Peak let-through current 63 50 40 32 & 20M32$ 25 & 20M25* Power (Watts) 5 4 3 2 Curves from BS88 standard part 6 of 988. Voltage rating : 45 VAC. Interrupting rating : 40 ka under 45 VAC. ASTA 20 certified Dissipated power * Current ratings additional to BS88 also comply to the BS 88 standard part 6 of 988. BS 88-part 6 standardized limit 0 Fuse-link rating (Amperes) Maximum value of current (ka) Curves from BS88 standard part 6 of 988. Voltage rating : 45 VAC. Interrupting rating : 40 ka under 45 VAC. * Current ratings additional to BS88 also comply to the BS 88 standard part 6 of 988. Prospective current (ka R.M.S. symmetrical) 52