JTD_ID Series Indicator POWR-PRO® Class J Fuses 600 VAC ■ Time Delay ■ 8/10 – 600 Amperes POWR-PRO FUSES SPECIFICATIONS Voltage ratings: AC: 600 Volts DC: Contact Factory Interrupting ratings: AC: 200,000 amperes rms symmetrical. 300,000 amperes rms symmetrical (Littelfuse self-certified) Ampere range: 8/10 – 600 amperes Approvals: UL Listed Class J fuses per UL 248 (formerly 198C) (File No. E81895). CSA certified HRCI-J per C22.2 #106 (File No. LR29862) AMPERE RATINGS NEW 8 /10 1 11/4 11/2 16/10 18/10 2 21/4 21/2 28/10 3 32/10 31/2 4 41/2 5 56/10 6 7 8 9 10 12 15 171/2 20 25 30 35 40 45 50 60 70 80 90 100 110 125 150 175 200 225 250 300 400 450 500 600 Example part number (series & amperage): JTD 60 ID RECOMMENDED FUSE BLOCKS LJ600 series Refer to Fuse Block section of this catalog for additional information. The Littelfuse® POWR-PRO® JTD_ID Indicator Class J fuse provides visual blown fuse indication and maximum protection in a compact package. The compact Class J package was designed specifically for circuits where space is at a premium. The current limiting time delay JTD_ID offers a patented true dual-element design that is ideal for use in circuits with high inrush currents. Superior performance characteristics of JTD_ID Indicator fuses reduce nuisance fuse opening and the blown fuse indication reduces downtime and increases safety. APPLICATIONS No fuse testing required. Machine operators can immediately determine that there is an open fuse and request maintenance personnel to bring the proper replacement. ■ Reduce nuisance opening — Indicator fuses have superior time-delay and cycling characteristics which can lengthen fuse life and decrease needless opening. ■ Reduce fuse inventory — Because JTD_ID Indicator fuses have superior performance characteristics they can be used on a variety of applications, thus decreasing fuse inventory. ■ Reduce equipment damage — Indicator fuses provide superior overload and short circuit protection that can reduce equipment damage. Indicator fuses also provide IEC Type II “No Damage” protection to IEC and NEMA type motor starters. ■ Reduce accidents — The JTD_ID Indicator fuse improves safety by minimizing exposure to live circuits. Unlike other forms of blown fuse indication, once the indicator window darkens, it stays dark. It does not matter if the power is on or off or if the fuse is in a tool box. Other forms of indication require the power to remain on, which causes a safety hazard for personnel. Fused combination motor controllers to provide IEC Type II (no damage) motor branch-circuit short-circuit and ground fault protection Motor control centers Transformer protection Protection for UL Listed series-rated molded case circuit breaker panels General purpose circuits — mains, feeders and branch circuits — especially when space is at a premium FEATURES/BENEFITS ■ Reduce down-time — A glance at the indicating window of a JTD_ID Indicator fuse pinpoints open fuses immediately. If the window is dark, the fuse has opened. It’s that simple. 13 JTD_ID Series Indicator POWR-PRO® Class J Fuses 600 VAC ■ Time Delay ■ 8/10 – 600 Amperes POWR-PRO FUSES An Inside Look . . . Plated End Caps – help reduce corrosion and provide superior contact that aids in lower heat generation. Superior Short-Circuit Elements – reduce damage to equipment and enables the Littelfuse JTD_ID to provide IEC Type II “NO DAMAGE” protection to IEC and NEMA motor starters. Blown Fuse Indicator – incorporates precision-wound elements to provide consistant and reliable blown fuse indication. Stone-Sand Filler – helps provide I2t and I Peak values well below UL maximum limits and improves heat disapation and reliability. Solid State Overload Section – patented thermally reversible design utilizes high-tech aircraft grade polymers to ensure reliable operation every time. Elastomeric Silicone EPR Plug – a space-age material used in the patented overload section of the Littelfuse JTD_ID. Granular Quartz Filler – assists in quenching the arc that occurs during overload conditions. C D G A 14 REFER TO FIG. NO. H A B C D FIG. 1 AMPERES F E FIG.2 DIMENSIONS IN INCHES (mm in parentheses) A B C D E F G H — 1/2 (12.7) 13/16 (20.6) — — — — 8/10– 30 1 2-1/4 (57.2) 35 – 60 1 2-3/8 (60.3) — 5/8 (15.9) 1-1/16 (27.0) — — — — 70 – 100 2 2-5/8 (66.7) 3-17/32 (89.7) 3-23/32 (94.5) 4-5/8 (117.5) 1 (25.4) 3/4 (19.1) 9/32 (7.1) 1/8 (3.2) 110 – 200 2 3 (76.2) 4-9/32 (108.7) 4-15/32 (113.5) 5-3/4 (146.1) 1-1/2 (38.1) 1-1/8 (28.6) 9/32 (7.1) 3/16 (4.8) 225 – 400 2 3-3/8 (85.7) 5-1/8 (130.2) 5-3/8 (136.5) 7-1/8 (181.0) 2 (50.8) 1-5/8 (41.3) 13/32 (10.3) 1/4 (6.4) 450 – 600 2 3-3/4 (95.3) 5-27/32 (148.4) 6-5/32 (156.4) 8 (203.2) 2-1/2 (63.5) 2 (50.8) 17/32 (13.5) 3/8 (9.5) JTD_ID Series Indicator POWR-PRO® Class J Fuses 600 VAC ■ Time Delay 8/10 – 600 Amperes ■ POWR-PRO FUSES Short Circuit Current* Let-Thru 30A 750 925 1,050 1,125 1,200 1,300 1,350 1,400 1,500 1,600 1,700 1,800 2,000 2,175 Current** For Various Fuse Ratings 60A 100A 200A 400A 1,500 1,800 2,800 4,800 1,900 2,450 3,600 5,700 2,100 2,800 4,100 6,500 2,300 3,000 4,400 7,250 2,500 3,300 5,000 8,000 2,600 3,500 5,100 8,400 2,700 3,700 5,400 9,000 2,800 3,900 5,600 9,200 3,000 4,200 6,000 10,000 3,200 4,500 6,400 10,500 3,400 4,900 7,200 11,200 3,600 5,200 7,800 12,200 3,950 6,000 9,000 14,500 4,000 6,500 10,000 16,000 600A 5,000 7,750 9,000 9,700 10,500 11,000 12,000 12,500 13,000 14,000 15,500 16,500 19,000 20,500 600A 400A 60A 1000 30A 15A * Prospective RMS Symmetrical Amperes Short-Circuit Current **Apparent RMS Symmetrical Note: Data derived from Peak Let-Thru Curves 200A Current-Limiting Effects of JTD_ID (600V) fuses 100A 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 50,000 60,000 80,000 100,000 150,000 200,000 15A 565 675 775 825 900 950 1,000 1,050 1,100 1,200 1,300 1,375 1,500 1,600 1000000 PEAK LET-THRU IN AMPERES TIME IN SECONDS 100 10 1 100000 600A 400A 200A 100A 60A 10000 30A 15A 12A 5.6A 1000 .1 .01 100 100 1 10 100 CURRENT IN AMPERES 1000 10000 1000 10000 100000 200000 AVAILABLE FAULT SYMMETRICAL R.M.S. AMPERES 15