POWR-GARD Fuse Datasheet CLASS RK1 LLNRK LLSRK LLSRK ID SERIES FUSES 1 250/600 Vac Dual Element Time-Delay / -600 A 10 QPL Ordering Information AMPERE RATINGS 1 8 1 /10 1 2 /10 6 /4 25 80 250 15 1 /100 1 /8 3 7 30 90 300 2 1 2 10 4 10 / 1 / 3 / 8 35 100 350 1 4 1 4 10 2 / 1 / 3 / 9 40 110 400 3 6 10 10 / 1 / 4 10 45 125 450 4 8 1 10 10 2 / 1 / 4 / 12 50 150 500 1 /2 2 5 15 60 175 600 6 1 6 1 /10 2 /4 5 /10 17 /2 70 200 8 1 /10 2 /2 6 20 75* 225 Note: All LLSRK ID fuses rated 1 amp and above are Indicator fuses. *75 A is only available for the 600 V. 600 V CATALOG ORDERING TYPE SERIES AMP NUMBER NUMBER INDICATING LLSRK ID 60 LLSRK060ID LSRK060.TXID NON-INDICATING LLSRK 60 LLSRK060 LSRK060.T Description RK1 fuses are extremely current-limiting fuses meaning they 250 V greatly reduce or eliminate damage to circuits and equipment under CATALOG ORDERING TYPE SERIES AMP short-circuit conditions. Replacing existing Class H, K and RK5 fuses NUMBER NUMBER with RK1 fuses is one of the easiest ways to immediately improve NON-INDICATING LLNRK 80 LLNRK080 LNRK080.V the protection of plant workers and equipment. Web Resources Applications Download TC Curves, CAD drawings and other technical information: lit telfuse.com/llsrk All general purpose circuits littelfuse.com/llnrk Motors Transformers Dimensions Safety upgrades Please refer to the Class R dimensions page 3. Peak Let-Thru Curve (600 V) Features/Benefits LLSRK & LLSRKID POWR-PRO Performance 100,000 Indication available 600A - 400A - Dual-element design 200A - Extremely Current-Limiting 100A - IEC Type 2 No Damage protection to IEC and NEMA type motor starters 10,000 60A - Indicating and DIN mount fuse holders available 30A - 12A - 5A - Specifications 3.5A - Voltage Ratings 600 Vac/300 Vdc (LLSRK/LLSRK ID) 250 Vac/125 Vdc (LLNRK) 1,000 Interrupting Ratings AC: 2 00 kA rms symmetrical 300 kA rms symmetrical (Littelfuse self-certified) DC: 20 kA Ampere Range 1/10 600 A Approvals AC: S tandard 248-12, Class RK1 100 UL Listed (File: E81895) CSA Certified (File: LR29862) DC: Littelfuse self-certified Federal Specification WF-1814 (QPL- W-F-1814) 10 10 100 1,000 10,000 100,000 Recommended Fuse Holders AVAILABLE FAULT CURRENT SYMMETRICAL R.M.S. AMPERES LFR60 Series LFR25 Series TEST VOLTAGE: 600V TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER: Note: For more information, see Peak Let-Thru Table BASIS FOR DATA: LLSRK & LLSRKID 3.5A - 600A DRAWN BY: LLL 1 of 3 littelfuse.com 2016 Littelfuse POWR-GARD Products LITTELFUSE,INC. DATE: 03/14/2016 CHICAGO,IL.USA REVISION: A Rev: 1-A-031716 DRAWING NO.: SHEET 2 OF 6 PEAKLETTHRUCHARACTERISTICCURVES FCC05-LSRK - DATA GENERATED IN EXCEL - PEAK LET- THRU IN AMPERES POWR-GARD Fuse Datasheet CLASS RK1 LLNRK LLSRK LLSRK ID SERIES FUSES Current-Limiting Effects of LLSRK and LLSRK ID (600 V) Fuses SHORT CIRCUIT APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS CURRENT* 3.5 A 5 A 12 A 30 A 100 A 200 A 400 A 600 A 5,000 196 251 427 586 1,764 2,821 - - 10,000 247 316 538 739 2,222 3,554 6,850 8,489 15,000 283 362 616 845 2,544 4,069 7,842 9,718 20,000 312 399 677 930 2,800 4,478 8,631 10,696 25,000 336 430 730 1,002 3,016 4,824 9,297 11,522 30,000 357 456 776 1,065 3,205 5,126 9,880 12,244 35,000 376 481 816 1,121 3,374 5,397 10,401 12,889 40,000 393 502 854 1,172 3,528 5,642 10,874 13,476 50,000 423 541 919 1,263 3,800 6,078 11,714 14,516 60,000 450 575 977 1,342 4,038 6,459 12,448 15,426 80,000 495 633 1,075 1,477 4,445 7,109 13,700 16,979 100,000 533 682 1,158 1,591 4,788 7,658 14,758 18,290 150,000 610 781 1,326 1,821 5,481 8,766 16,894 20,936 200,000 671 859 1,460 2,005 6,032 9,648 18,594 23,043 Current-Limiting Effects of LLNRK (250 V) Fuses SHORT CIRCUIT APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS CURRENT* 30 A 60 A 100 A 200 A 400 A 600 A 5,000 900 1,400 2,000 2,700 4,800 5,000 10,000 1,100 1,900 2,700 3,500 6,200 8,500 15,000 1,250 2,100 3,100 4,200 7,000 9,500 20,000 1,400 2,400 3,500 4,600 8,000 10,800 25,000 1,500 2,600 3,900 5,000 8,300 11,500 30,000 1,600 2,800 4,000 5,250 9,000 12,000 35,000 1,700 2,850 4,300 5,500 9,500 12,500 40,000 1,800 3,000 4,600 5,800 9,800 13,500 50,000 1,900 3,200 4,800 6,300 10,200 14,000 60,000 2,000 3,500 5,200 6,700 11,000 15,000 80,000 2,200 3,900 5,700 7,200 12,200 16,000 100,000 2,300 4,000 6,000 8,100 12,700 17,000 150,000 2,500 4,500 6,700 9,100 14,000 19,000 200,000 2,600 4,800 7,000 9,700 15,000 20,000 *Prospective RMS Symmetrical Amperes Short-Circuit Current Note: Data derived from Peak Let-Thru Curves LLSRK ID FusesQuality Construction for performance you can rely on Littelfuse LLSRK ID Fuses feature true dual-element Plated End Caps construction. This robust design withstands Blown Fuse Indicator Assembly repeated surges within rated time delay without opening needlessly, eliminating Precision Formed Short Circuit Element downtime caused by power surges or equipment demands. Fiberglass Reinforced Pultruded Body Granular Quartz Filling Elastomeric Silicone Overload Section 2 of 3 littelfuse.com 2016 Littelfuse POWR-GARD Products Rev: 1-A-031716