General Purpose US US Fuses General Purpose Fuses American Power Fuses AMP-TRAP(R) A4BY (Class L) Count on the high interrupting rating of our most widely-used class L fuse When it comes to protecting service entrance equipment, feeder circuits, and circuit breakers, A4BY fuses have been the industry's favorite. The A4BY is a 100% rated device and may be applied at continuous currents up to its ampere rating. A 4-second minimum time delay at 500% rating allows the A4BY to pass normal current surges and to coordinate with ground fault relays. Applications * * * * * * Features /Benefits Mains, Feeders Circuit Breakers Loadcenters Panelboards Switchboards Metering Centers Approvals * Unique dimensions prevent replacement by other fuse classes * Blade stamped catalog numbers for permanent identification * Glass melamine body and plated terminals provide superior reliability in harsh environments * UL Listed to Standard 248-10 (601-6000A) * CSA Certified to Standard C22.2 No. 248.10 (601-6000A) * DC Tested to UL 198L limits (601-6000A) Ratings AC: 200 to 6,000A 600VAC,200kA I.R. Indicators: Optional built-in fuse indicators (-TI) are available. Consult factory. DC: 200 to 2500A 300VDC, 100kA I.R. Highlights * * * * Current-Limiting 4-Second Time Delay DC Ratings Uniform Characteristics in all Ampere Ratings GPUS37 12/04 General Purpose General Purpose US Fuses US Fuses American Power Fuses AMP-TRAP(R) A4BY (Class L) Standard Fuse Ampere Ratings Ampere Rating Catalog Number Ref. Number Ampere Rating Catalog Number Ref. Number Ampere Rating Catalog Number Ref. Number 200 250 300 350 400 500 600 601 650 700 750 800 A4BY200 A4BY250 A4BY300 A4BY350 A4BY400 A4BY500 A4BY600 A4BY601 A4BY650 A4BY700 A4BY750 A4BY800 P217823 P222584 J201948 Y212725 Z213738 T216286 Q217824 C219376 Z219902 Q222585 M200893 Z201433 801 900 1000 1100 1200 1201 1350 1400 1500 1600 1601 1800 A4BY801 A4BY900 A4BY1000 A4BY1100 A4BY1200 A4BY1201 A4BY1350 A4BY1400 A4BY1500 A4BY1600 A4BY1601 A4BY1800 K211172 C211694 X201431 H211170 A211692 X212724 G213239 Y213737 H214758 L215267 T216792 K217313 2000 2001 2500 3000 3001 3500 4000 4001 5000 6000 A4BY2000 A4BY2001 A4BY2500 A4BY3000 A4BY3001 A4BY3500 A4BY4000 A4BY4001 A4BY5000 A4BY6000 A218339 M218856 L200892 J211171 H212205 H213240 G214251 J214759 V216793 N218857 3001-4000A 2001-3000A 4001-6000A 200-800A 801-2000A Dimensions Ampere Rating In. A mm In. B mm In. C mm In. D mm In. mm 200-600* 601-800 801-1200 1201-1600 1601-2000 2001-2500 2501-3000 3001-4000 4001-5000 5001-6000 8-5/8 8-5/8 10-3/4 10-3/4 10-3/4 10-3/4 10-3/4 10-3/4 10-3/4 10-3/4 219 219 273 273 273 273 273 273 273 273 2 2-1/2 2-1/2 3 3-1/2 4-1/2 5 5-3/4 6-1/4 7-1/8 51 63 63 76 89 114 127 146 159 181 5/16 3/8 3/8 7/16 1/2 3/4 3/4 3/4 1 1 8 9 9 11 13 19 19 19 25 25 1-5/8 2 2 2-3/8 2-3/4 3-1/2 4 4-3/4 5-1/4 5-3/4 41 51 51 60 70 89 102 121 133 146 2-13/32 2-13/32 3-15/32 3-15/32 3-15/32 3-15/32 3-15/32 3-15/32 3-15/32 3-15/32 61 61 88 88 88 88 88 88 88 88 Safety Note: Class L fuses are dimensioned for one-way interchangeability. A Class L fuse of any lower ampere rating can be substituted for a given Class L fuse. 12/04 GPUS38 E General Purpose US US Fuses General Purpose Fuses American Power Fuses AMP-TRAP(R) A4BY (Class L) CURRENT IN AMPERES MELTING TIME - CURRENT DATA, 600V FUSES A4BY 200 to 6000 TIME IN SECONDS MAXIMUM INSTANTANEOUS PEAK LET-THRU AMPERES Peak Let-Thru Current Data - A4BY 300 to 6000, 600 Volts AC AVAILABLE CURRENT IN RMS SYMMETRICAL AMPERES GPUS39 12/04