LF Series lass H/K5 and r Fuse blocks 250 V 0 V Specifications Description The Littelfuse lass H/K5 and R blocks offer many benefits such as indication, snap-to-release DIN rail mounting and universal mounting holes. lass H and lass R fuse blocks are dimensionally the same, but lass R blocks incorporate a rejection feature, which only allows lass R fuses to be inserted. Features/Benefits Universal mounting holes for easy replacement offered on most 250 V and 0 V versions One hand release from DIN rail for ferrule style fuses Reinforced fuse clips are standard on all lass H and lass R fuse blocks overs available for 00 A and lower to enhance safety Voltage ere s Leakage urrent Withstand 250 V, 0 V 0-0 A <0.6 ma at 0 V lass H: 0 ka RMS SYM lass R: ka RMS SYM Flammability UL94 V-0 Approvals UL Listed (File: E472) SA ertified (File: LR76) Environmental Web Resources RoHS ompliant, Lead (Pb) Free Sample requests, downloadable AD drawings and other technical information: /lfh /lfr /fuseblocks Recommended Fuses lass H/K5 Blocks 250 V NLN, RLN lass R Blocks 250 V FLNR/FLNR_ID, KLNR, LLNRK lass H/K5 Blocks 0 V NLS, RLS lass R Blocks 0 V FLSR/FLSR_ID, KLSR, LLSRK/LLSRK_ID, IDSR Ordering Information (lass H 250 V) 0 00 Base part Box PreSSure number Lug Plate LFH2500 P S TERMINAL 6-4 AWG 2 LFH25002 P S 2.8 N-m (25 in-lbs) P 0-4 AWG LFH2500 P S S 0-22 AWG LFH250 ID 2.8 N-m (25 in-lbs) 6-4 AWG 2 LFH2502 ID LFH250 ID LFH2500 LFH2500 ID ID.6 N-m (20 in-lbs) 2/0-6 AWG 4.5 N-m (40 in-lbs) 8 AWG 4.0 N-m (5 in-lbs) 0-4 AWG Type U Only Base Temp DIN Rail OVer ordering number* 25 LFH2500FB U-AL 25 LFH250FB U-AL 0 LFH2500FB LFH25 LFH25. N-m (275 in-lbs) 250 kcmil-6 U-AL 0 LFH25 LFH25. N-m (275 in-lbs) (2) 50 kcmil-/0 U-AL 0 LFH250 0 LFH250 42.4 N-m (75 in-lbs) (2) 500 kcmil-4 U-AL 0 Note: Reinforcing springs standard on all lass H fuse blocks. *overs sold individually. One cover needed for each pole. of 6 20 Littelfuse POWR-GARD Products
LF Series lass H/K5 And R Fuse blocks Ordering Information (lass H 0 V) 0 00 0 BASE ordering Box PreSSure number Lug Plate LFH00 ID PID SID 6-4 AWG 2 LFH002 ID PID SID 2.8 N-m (25 in-lbs) P 0-4 AWG LFH00 ID PID SID S 0-22 AWG LFH0 ID 2 LFH02 ID LFH0 ID 2.8 N-m (25 in-lbs) 6-4AWG LFH00 LFH00 ID ID Note: Reinforcing springs standard on all lass H fuse blocks. Note: Reinforcing springs standard on all lass R fuse blocks. Note: Reinforcing springs standard on all lass R fuse blocks. *overs sold individually. One cover needed for each pole. LFH LFH LFH LFH LFH0 LFH0 Ordering Information (lass R 250 V) 0 00 0 Terminal Type U Only Base Temp Snap to release OVer ordering number* 0 LFH00FB U-AL 0 LFH0FB.6 N-m (20 in-lbs) 2/0-6AWG 4.5 N-m (40 in-lbs) 8 AWG U-AL 0 LFH00FB 4.0 N-m (5 in-lbs) 0-4 AWG. N-m (275 in-lbs) 250 kcmil-6 U-AL 0. N-m (275 in-lbs) (2) 50 kcmil-/0 U-AL 0 42.4 N-m (75 in-lbs) (2) 500 kcmil-4 U-AL 0 Base Snap OVer BASE Type Temp to ordering ordering Box PreSSure release number* number Lug Plate LFR2500 P S 6-4 AWG 2 LFR25002 P S 2.8 N-m (25 in-lbs) P 0-4 AWG U Only 25 LFH2500FB LFR2500 P S S 0-22 AWG LFR250 ID 2 LFR2502 ID U-AL 25 LFH250FB LFR250 ID 2.8 N-m (25 in-lbs) 6-4 AWG ID.6 N-m (20 in-lbs) 2/0-6 AWG LFR2500 4.5 N-m (40 in-lbs) 8 AWG U-AL LFR2500 ID 4.0 N-m (5 in-lbs) 0-4 AWG 0 LFH2500FB LFR25 LFR25. N-m (275 in-lbs) 250 kcmil-6 U-AL 0 LFR25 LFR25. N-m (275 in-lbs) (2) 50 kcmil-/0 U-AL 0 LFR250 LFR250 42.4 N-m (75 in-lbs) (2) 500 kcmil-4 U-AL 0 Ordering Information (lass R 0 V) 0 00 0 BASE ordering Box PreSSure number Lug Plate LFR00 ID PID SID 6-4 AWG 2 LFR002 ID PID SID 2.8 N-m (25 in-lbs) P 0-4 AWG LFR00 ID PID SID S 0-22 AWG LFR0 ID 2 LFR02 ID LFR0 ID 2.8 N-m (25 in-lbs) 6-4 AWG TERMINAL TERMINAL Type U Only Base Temp Snap to release OVer ordering number* 0 LFH00FB U-AL 0 LFH0FB.6 N-m (20 in-lbs) 2/0-6 AWG LFR00 ID 4.5 N-m (40 in-lbs) 8 AWG U-AL LFR00 ID 4.0 N-m (5 in-lbs) 0-4 AWG 0 LFH00FB LFR LFR. N-m (275 in-lbs) 250 kcmil-6 U-AL 0 LFR LFR. N-m (275 in-lbs) (2) 50 kcmil-/0 U-AL 0 LFR0 LFR0 42.4 N-m (75 in-lbs) (2) 500 kcmil-4 U-AL 0 2 of 6 20 Littelfuse POWR-GARD Products
lass H/K5 AND R Fuse blocks 250 V 0 A 5.6 [.6].0 [.5] 4.8 [.9] 28.6 [.] 2.8 [.94] 6. [.64] 6.8 [.27] 48.5 [.9] 2.2 [.27] 5.6 [.22] 42.9 [.69].8 [.25] 74.7 [2.94] 40. [.58] 8.4 [.] 76.5 [.0].9 8.2 [.26] [.5] 44.6 [.76] R2.8 [.] R2.8 [.].2 THRU.6 [.4] 250 V A 22.4 [.88] 4.8 [.58] 9.7 [.8] 7. [.47] 70.7 [2.78] 04. [4.0] 55.8 [2.20] 89.2 [.5] 4. [.70] 76.5 [.0] 57.4 [2.26] 24.9 [.98] 4.9 [.7] 75.7 [2.98] 9.7 [4.7] R2.8 [.] 5.5 [.2] 250 V 00 A 4.7 [.7] 20. [.80]. [.45] 46.0 [.8] 26. [4.97] 00.6 [.96] 9.6 [.6].5 [2.8] 5.5 [2.0] 66.0 [2.] 22.9 [.90] 72.6 [2.86] 5.6 [2.] R.4 [.].0 [5.2] 77.8 [7.00] of 6 20 Littelfuse POWR-GARD Products
lass H/K5 AND R Fuse blocks 250 V A 6.5 [2.50] 2.7 [.50] 76.2 [.00] 6.5 [2.50] 9. [.75] 2.7 [.50] 228.6 [9.00] 25.9 [8.50] 84.2 [7.25] 65. [6.50] 72.4 [2.85] 28.5 [5.06] 52.6 [2.07] R4. [.7]. 8. [7.] 250 V A 66.7 [2.6] 22.2 [.88] 88.9 [.50] 266.7 [0.50] 84.4 [.2] 250.8 [9.88] 95. [.75] 95. [.75] 08.0 [4.25] 84.2 [7.25] 96.9 [7.75] 292. [.50] 250 V 0 A 4. [4.5] 79.4 [.] 4.9 [.4] 9. [.8] 9. [.8] 7.5 [2.5] 298.5 [.8] 0.6 [4.4] 5.9 [.6] 9.7 [5.5] 4. [4.5] Ø.6.4 4. [4.5] Ø.6.4 24. [9.5] 25.9 [8.5] 55.6 [4.0] 4 of 6 20 Littelfuse POWR-GARD Products
lass H/K5 AND R Fuse blocks 0 V 0 A 8.4 [.5] 2.5 [.85] 7. [2.88] 9.2 [.76] 5.6 [2.0] 6.8 [.66] 4. [.62] 6.4 [.25] 07.9 [4.25] 86.4 [.40] 75.9 [2.99] 52.5 [2.07] 20.7 [.82] 66.7 [6.56] 27. [5.00] 8.6 [4.67] 56.0 [2.20] 47.6 [.87] R.4 [.] R2.6 [.0] 0 V A 2.4 [.28] 29.8 [.7] 9.9 [.78].4 [.45] 4.8 [.7] 8.6 [.29] 2.2 [4.85] 69.5 [2.74] 09. [4.0] 59.6 [2.5] 99.4 [.9] 59.7 [2.5] 22.9 [.90] 4.6 [5.0] 55.2 [2.8] 74.2 [2.92] R.4 [.].2 THRU.5.5 84.2 [7.25] 0 V 00 A.8 [.] 9.6 [.77] 5.0 [.59] 5.4 [2.0] 45. [5.72] 25.7 [4.95] 07.0 [4.2] 79.8 [.4] 6.0 [2.40] 66.0 [2.] 22.9 [.90] 64.6 [2.54] R.4 [.] 72.8 [6.80] 228.6 [9.00] 5 of 6 20 Littelfuse POWR-GARD Products
lass H/K5 AND R Fuse blocks 0 V A 76.2 [.00] 6.5 [2.50] 2.7 [.50] 228.6 [9.00] 96.9 [7.75] 6.5 [2.50] 65. [6.50] 44.5 [.75].8 [.25] 2.7 [.50] 72.4 [2.85] 5.9 [.6]. [6.] 92.0 [7.56] 84.2 [.2] 52. [2.06] Ø.7.4 52. [2.06] 76.7 [.02] 84. [.]. [6.] 244. [9.62] R4. [.7]. 0 V A 88.9 [.50] 7.0 [2.88] 66.7 [2.6] 22.2 [.88] 266.7 [0.50] 250.8 [9.88] 84.4 [.2] 222. [8.75] 27. [0.75] 46. [5.75] 95. [.75] 68. [4.50] 0 V 0 A 4. [4.50] 95. [.75] 79.4 [.] 4.9 [.8] 9. [.75] 7.5 [2.50] 298.5 [.75] 9. [.75] 0.6 [4.6] 77.8 [7.00] 254.0 [0.00] 4. [4.50] Ø.6.4 4.8 [7.00] 6 of 6 20 Littelfuse POWR-GARD Products