POWR-GARD(R) Blocks and Holders Datasheet LF SERIES CLASS H/K5 AND R FUSE BLOCKS 250 V * 600 V Specifications Voltage Rating 250 V, 600 V Ampere Ratings 0-600 A Leakage Current <0.6 mA at 600 V Withstand RatingClass H: 10 kA RMS SYM Class R: 200 kA RMS SYM Flammability Rating UL94 V-0 Approvals UL Listed (File: E14721) CSA Certified (File: LR7316) Environmental RoHS Compliant, Lead (Pb) Free Description Web Resources The Littelfuse Class H/K5 and R blocks offer many benefits such as indication, snap-to-release DIN rail mounting and universal mounting holes. Class H and Class R fuse blocks are dimensionally the same, but Class R blocks incorporate a rejection feature, which only allows Class R fuses to be inserted. Sample requests, downloadable CAD drawings and other technical information: littelfuse.com/lfh littelfuse.com/lfr Recommended Fuses Class H/K5 Blocks - 250 V NLN Features/Benefits Class R Blocks - 250 V * * * * Universal mounting holes for easy replacement Indication offered on most 250 V and 600 V versions One hand release from DIN rail for ferrule style fuses Reinforced fuse clips are standard on all Class H and Class R fuse blocks * Covers available for 100 A and lower to enhance safety FLNR/FLNR_ID, KLNR, LLNRK Class H/K5 Blocks - 600 V NLS Class R Blocks - 600 V FLSR/FLSR_ID, KLSR, LLSRK/LLSRK_ID, IDSR 60 100 200 400 600 BASE PART NUMBER 1 2 3 1 2 3 1 LFH250301 LFH250302 LFH250303 LFH250601 LFH250602 LFH250603 LFH251001 3 1 3 1 3 1 3 LFH251003 LFH252001 LFH252003 LFH254001 LFH254003 LFH256001 LFH256003 SUFFIX TORQUE BOX PRESSURE SCREW LUG PLATE C P S C P S 2.8 N-m (25 in-lbs) C P S CID -- -- 5.6 N-m (50 in-lbs) CID -- -- 2.8 N-m (25 in-lbs) CID -- -- 13.6 N-m (120 in-lbs) CID -- -- 4.5 N-m (40 in-lbs) CID -- -- 4.0 N-m (35 in-lbs) C -- -- 31.1 N-m (275 in-lbs) C -- -- C -- -- 31.1 N-m (275 in-lbs) C -- -- C -- -- 42.4 N-m (375 in-lbs) C -- -- C P S WIRE RANGE 6-14 AWG 10-14 AWG 10-22 AWG 2-4 AWG 6-14 AWG 2/0-6 AWG 8 AWG 10-14 AWG BASE TEMP RATING DIN RAIL INDICATION 30 ORDERING NUMBER TERMINAL AMP RATING POLES Ordering Information (Class H 250 V) COVER ORDERING NUMBER* CU Only 125C * -- LFH25030FBC CU-AL 125C * * LFH25060FBC 130C -- * LFH25100FBC WIRE TYPE CU-AL Solid/ Stranded 250 kcmil-6 CU-AL 130C -- -- -- (2) 350 kcmil-1/0 CU-AL 130C -- -- -- (2) 500 kcmil-4 CU-AL 130C -- -- -- Note: Reinforcing springs standard on all Class H fuse blocks. *Covers sold individually. One cover needed for each pole. littelfuse.com/lfh littelfuse.com/lfr 1 of 6 (c) 2016 Littelfuse POWR-GARD(R) Products Rev: 4-A-012516 POWR-GARD(R) Blocks and Holders Datasheet LF SERIES CLASS H/K5 AND R FUSE BLOCKS 100 200 400 600 BOX LUG CID CID CID CID CID CID CID 3 1 3 1 3 1 3 LFH601003 LFH602001 LFH602003 LFH604001 LFH604003 LFH606001 LFH606003 CID C C C C C C SUFFIX PRESSURE SCREW PLATE PID SID PID SID PID SID -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- TORQUE 2.8 N-m (25 in-lbs) C P S WIRE RANGE WIRE TYPE BASE SNAP TEMP TO RATING RELEASE COVER ORDERING NUMBER* 2.8 N-m (25 in-lbs) 13.6 N-m (120 in-lbs) 4.5 N-m (40 in-lbs) 4.0 N-m (35 in-lbs) 6-14 AWG 10-14 AWG CU Only 10-22 AWG 2-4 AWG CU-AL 6-14AWG 2/0-6AWG Solid/ 8 AWG CU-AL Stranded 10-14 AWG 31.1 N-m (275 in-lbs) 250 kcmil-6 CU-AL 130C -- -- -- 31.1 N-m (275 in-lbs) (2) 350 kcmil-1/0 CU-AL 130C -- -- -- 42.4 N-m (375 in-lbs) (2) 500 kcmil-4 CU-AL 130C -- -- -- INDICATION 60 1 2 3 1 2 3 1 BASE ORDERING NUMBER LFH600301 LFH600302 LFH600303 LFH600601 LFH600602 LFH600603 LFH601001 TERMINAL 30 POLES ORDERING NUMBER AMP RATING INDICATION Ordering Information (Class H 600 V) COVER ORDERING NUMBER* 5.6 N-m (50 in-lbs) 130C * * LFH60030FBC 130C * * LFH60060FBC 130C -- * LFH60100FBC Note: Reinforcing springs standard on all Class H fuse blocks. Ordering Information (Class R 250 V) 100 200 400 600 BOX LUG C C C CID CID CID CID 3 1 3 1 3 1 3 LFR251003 LFR252001 LFR252003 LFR254001 LFR254003 LFR256001 LFR256003 CID C C C C C C SUFFIX PRESSURE SCREW PLATE P S P S P S -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- TORQUE 2.8 N-m (25 in-lbs) C P S WIRE RANGE WIRE TYPE BASE SNAP TEMP TO RATING RELEASE 2.8 N-m (25 in-lbs) 13.6 N-m (120 in-lbs) 4.5 N-m (40 in-lbs) 4.0 N-m (35 in-lbs) 6-14 AWG 10-14 AWG CU Only 10-22 AWG 2-4 AWG CU-AL 6-14 AWG 2/0-6 AWG Solid/ 8 AWG CU-AL Stranded 10-14 AWG 31.1 N-m (275 in-lbs) 250 kcmil-6 CU-AL 130C -- -- -- 31.1 N-m (275 in-lbs) (2) 350 kcmil-1/0 CU-AL 130C -- -- -- 42.4 N-m (375 in-lbs) (2) 500 kcmil-4 CU-AL 130C -- -- -- INDICATION 60 1 2 3 1 2 3 1 BASE ORDERING NUMBER LFR250301 LFR250302 LFR250303 LFR250601 LFR250602 LFR250603 LFR251001 TERMINAL 30 POLES ORDERING NUMBER AMP RATING COVER ORDERING NUMBER* 5.6 N-m (50 in-lbs) 125C * -- LFH25030FBC 125C * * LFH25060FBC 130C -- * LFH25100FBC Note: Reinforcing springs standard on all Class R fuse blocks. 30 60 100 200 400 600 1 2 3 1 2 3 1 ORDERING NUMBER SUFFIX BASE ORDERING BOX PRESSURE SCREW NUMBER LUG PLATE LFR600301 CID PID SID LFR600302 CID PID SID LFR600303 CID PID SID LFR600601 CID -- -- LFR600602 CID -- -- LFR600603 CID -- -- LFR601001 CID -- -- 3 1 3 1 3 1 3 LFR601003 LFR602001 LFR602003 LFR604001 LFR604003 LFR606001 LFR606003 POLES AMP RATING CID C C C C C C -- -- -- -- -- -- -- -- -- -- -- -- -- -- TORQUE TERMINAL Ordering Information (Class R 600 V) 2.8 N-m (25 in-lbs) C P S WIRE RANGE WIRE TYPE BASE SNAP TEMP TO RATING RELEASE 2.8 N-m (25 in-lbs) 13.6 N-m (120 in-lbs) 4.5 N-m (40 in-lbs) 4.0 N-m (35 in-lbs) 6-14 AWG 10-14 AWG CU Only 10-22 AWG 2-4 AWG CU-AL 6-14 AWG 2/0-6 AWG Solid/ 8 AWG CU-AL Stranded 10-14 AWG 31.1 N-m (275 in-lbs) 250 kcmil-6 CU-AL 130C -- -- -- 31.1 N-m (275 in-lbs) (2) 350 kcmil-1/0 CU-AL 130C -- -- -- 42.4 N-m (375 in-lbs) (2) 500 kcmil-4 CU-AL 130C -- -- -- 5.6 N-m (50 in-lbs) 130C * * LFH60030FBC 130C * * LFH60060FBC 130C -- * LFH60100FBC Note: Reinforcing springs standard on all Class R fuse blocks. *Covers sold individually. One cover needed for each pole. littelfuse.com/lfh littelfuse.com/lfr 2 of 6 (c) 2016 Littelfuse POWR-GARD(R) Products Rev: 4-A-012516 POWR-GARD(R) Blocks and Holders Datasheet CLASS H/K5 AND R FUSE BLOCKS Dimensions mm (inches) 28.6 [1.13] 250 V 30 A 15.6 [.61] 13.0 [.51] 4.8 [.19] 76.5 [3.01] 74.7 [2.94] 48.5 [1.91] 32.2 [1.27] 23.8 [.94] 16.3 [.64] 6.8 [.27] 42.9 [1.69] 31.8 [1.25] 40.1 [1.58] 15.9 [.63] 8.4 [.33] 5.6 [.22] 31.9 38.2 [1.26] [1.51] 44.6 [1.76] R2.8 [.11] TYP R2.8 [.11] TYP .2 THRU 3.6 [.14] 250 V 60 A 37.3 [1.47] 22.4 [.88] 14.8 [.58] 9.7 [.38] 57.4 [2.26] 104.1 [4.10] 70.7 [2.78] 24.9 [.98] 89.2 [3.51] 55.8 [2.20] 76.5 [3.01] 43.1 [1.70] 43.9 [1.73] 75.7 [2.98] 119.7 [4.71] R2.8 [.11] TYP 5.5 [.21] 126.3 [4.97] 250 V 100 A 100.6 [3.96] 46.0 [1.81] 91.6 [3.61] 34.7 [1.37] 20.3 [.80] 11.3 [.45] 53.6 [2.11] 72.6 [2.86] 60.5 [2.38] 51.5 [2.03] 66.0 [2.60] 22.9 [.90] R3.4 [.13] TYP 133.0 [5.23] 177.8 [7.00] littelfuse.com/lfh littelfuse.com/lfr 3 of 6 (c) 2016 Littelfuse POWR-GARD(R) Products Rev: 4-A-012516 POWR-GARD(R) Blocks and Holders Datasheet CLASS H/K5 AND R FUSE BLOCKS Dimensions mm (inches) 250 V 200 A 63.5 [2.50] 12.7 [.50] 76.2 [3.00] 228.6 [9.00] 215.9 [8.50] 184.2 [7.25] 165.1 [6.50] 63.5 [2.50] 19.1 [.75] 12.7 [.50] 52.6 [2.07] 72.4 [2.85] 15.9 [.63] R4.3 [.17] TYP. 128.5 [5.06] 181.1 [7.13] O.3 THRU O.3 THRU O.8 .4 250 V 400 A 66.7 [2.63] 22.2 [.88] 15.9 [.63] 88.9 [3.50] 84.4 [3.32] 250.8 [9.88] 15.9 [.63] 15.9 [.63] 95.3 [3.75] 108.0 [4.25] 266.7 [10.50] 95.3 [3.75] O.3 THRU O.8 .4 O.3 THRU O.8 .4 196.9 [7.75] 184.2 [7.25] 292.1 [11.50] 317.5 [12.5] 114.3 [4.5] 79.4 [3.1] 34.9 [1.4] 19.1 [.8] 250 V 600 A 19.1 [.8] 114.3 [4.5] 139.7 [5.5] 110.6 [4.4] 298.5 [11.8] 15.9 [.6] 114.3 [4.5] O.3 THRU O.6 .4 O.3 THRU O.6 .4 O.3 THRU O.8 .4 241.3 [9.5] 215.9 [8.5] 355.6 [14.0] littelfuse.com/lfh littelfuse.com/lfr 4 of 6 (c) 2016 Littelfuse POWR-GARD(R) Products Rev: 4-A-012516 POWR-GARD(R) Blocks and Holders Datasheet CLASS H/K5 AND R FUSE BLOCKS Dimensions mm (inches) 38.4 [1.51] 21.5 [.85] 19.2 [.76] 16.8 [.66] 6.4 [.25] 600 V 30 A 73.1 [2.88] 51.6 [2.03] 41.1 [1.62] 52.5 [2.07] 107.9 [4.25] 86.4 [3.40] 75.9 [2.99] 20.7 [.82] 47.6 [1.87] R3.4 [.13] TYP R2.6 [.10] TYP 56.0 [2.20] 118.6 [4.67] 127.1 [5.00] 166.7 [6.56] 600 V 60 A 43.8 [1.73] 83.6 [3.29] 32.4 [1.28] 29.8 [1.17] 19.9 [.78] 11.4 [.45] 69.5 [2.74] 59.6 [2.35] 123.2 [4.85] 109.3 [4.30] 59.7 [2.35] 99.4 [3.91] 22.9 [.90] 55.2 74.2 [2.18] [2.92] R3.4 [.13] TYP .2 THRU .5 .5 134.6 [5.30] 184.2 [7.25] 600 V 100 A 33.8 [1.33] 19.6 [.77] 15.0 [.59] 145.3 [5.72] 125.7 [4.95] 107.0 [4.21] 79.8 [3.14] 61.0 [2.40] 53.4 [2.10] 66.0 [2.60] 22.9 [.90] 64.6 [2.54] R3.4 [.13] TYP 172.8 [6.80] 228.6 [9.00] littelfuse.com/lfh littelfuse.com/lfr 5 of 6 (c) 2016 Littelfuse POWR-GARD(R) Products Rev: 4-A-012516 POWR-GARD(R) Blocks and Holders Datasheet CLASS H/K5 AND R FUSE BLOCKS Dimensions mm (inches) 600 V 200 A 76.2 [3.00] 63.5 [2.50] 12.7 [.50] 52.3 [2.06] 84.2 [3.32] O.3 THRU O.7 .4 O.3 THRU O.8 .4 160.1 [6.31] 228.6 [9.00] 196.9 [7.75] 165.1 [6.50] 63.5 [2.50] 44.5 [1.75] 31.8 [1.25] 12.7 [.50] 72.4 [2.85] 15.9 [.63] 52.3 [2.06] 76.7 [3.02] 84.1 [3.31] O.3 THRU O.3 THRU O.8 .4 160.3 [6.31] 192.0 [7.56] 244.3 [9.62] R4.3 [.17] TYP. 600 V 400 A 88.9 [3.50] 73.0 [2.88] 66.7 [2.63] 22.2 [.88] 15.9 [.63] 95.3 [3.75] 146.1 [5.75] 266.7 [10.50] 15.9 [.63] 250.8 [9.88] 84.4 [3.32] 15.9 [.63] O.3 THRU O.8 .4 222.3 [8.75] 273.1 [10.75] 368.3 [14.50] 600 V 600 A 114.3 [4.50] 95.3 [3.75] 79.4 [3.13] 34.9 [1.38] 19.1 [.75] 114.3 [4.50] 177.8 [7.00] 254.0 [10.00] 19.1 [.75] 317.5 [12.50] 298.5 [11.75] 110.6 [4.36] 15.9 [.63] O.3 THRU O.6 .4 O.3 THRU O.8 .4 431.8 [17.00] littelfuse.com/lfh littelfuse.com/lfr 6 of 6 (c) 2016 Littelfuse POWR-GARD(R) Products Rev: 4-A-012516 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Littelfuse: LFH256003C LFH250302S LFH600303SID LFH250302P LFH604003C LFH600303PID LFR600302CID LFH250302C LFH600302PID LFH600301PID LFH606001C LFH251001CID LFH250301S LFR600301PID LFH600603CID LFH601003CID LFH252003C LFH252001C LFH606003C LFH251003CID LFH250303S LFH250603CID LFH254001C LFH250303P LFH600601CID LFH604001C LFH254003C LFH250301P LFH600302SID LFH250602CID LFH601001CID LFH600303CID LFH600301SID LFH250301C LFH600602CID LFR250302S LFH256001C LFH600302CID LFH602001C LFH600301CID LFH250303C LFH250601CID LFH602003C LFR250302P LFR250603CID LFR600302PID LFR250601CID LFR250303C LFR600303SID LFR604001C LFR250602CID LFR604003C LFR250301S LFR251001CID LFR600301SID LFR252003C LFR606003C LFR250303S LFR602003C LFR600303CID LFR601001CID LFR256003C LFR250302C LFR252001C LFR251003CID LFR600301CID LFR600302SID LFR254001C LFR606001C LFR250301C LFR601003CID LFR256001C LFR250301P LFR600602CID LFR254003C LFR600603CID LFR600601CID LFR602001C LFR250303P LFR600303PID