Misc. Products Fuse Reducers Littelfuse fuse reducers allow smaller size fuses to be installed into existing fuse clips. This prevents overfusing. ■ Allows lower ampere-rated fuses to be used in existing fuse clips. ■ Simple installation. ■ Reduces inventory requirements. ■ Silver brazed joints for maximum strength. ■ UL Listed (File No. E136855) CSA Certified (File No. LR92899) Refer to fuse section of this catalog for fuse dimensions. Class H/K5 Fuse Reducers 600 Volt 250 Volt For use with Littelfuse NLN/NLS and RLN/RLS series fuses. Class R Fuse Reducers Part No. (pair) Fuse Clip Fuse Case Size Part No. (pair) Fuse Clip Fuse Case Size LRU 263 M LRU 213 M LRU 216 LRU 226 LRU 2621 LRU 2641 LRU 2642 LRU 2661 LRU 2662 LRU 2664 60 100 100 200 200 400 400 600 600 600 30 30 60 60 100 100 200 100 200 400 LRU 663 LRU 216 LRU 616 LRU 626 LRU 2621 LRU 2641 LRU 2642 LRU 2661 LRU 2662 LRU 2664 60 100 100 200 200 400 400 600 600 600 30 30 60 60 100 100 200 100 200 400 250 Volt Part No. (pair) For use with Littelfuse FLNR_ID/ FLSR_ID, IDSR, LLNRK/LLSRK and KLNR/KLSR series fuses. * LRU 263 R LRU 213 R LRU 216 R LRU 226 R LRU 2621 R LRU 2641 R LRU 2642 R LRU 2661 R LRU 2662 R LRU 2664 R 600 Volt Fuse Clip Fuse Case Size Part No. (pair) Fuse Clip Fuse Case Size 60 100 100 200 200 400 400 600 600 600 30 30 60 60 100 100 200 100 200 400 LRU 663 R LRU 216 R LRU 616 R LRU 626 R LRU 2621 R LRU 2641 R LRU 2642 R LRU 2661 R LRU 2662 R * LRU 2664 R 60 100 100 200 200 400 400 600 600 600 30 30 60 60 100 100 200 100 200 400 * Only one reducer required. Class J Fuse Reducers For use with Littelfuse JTD_ID/JTD and JLS series fuses. 600 Volt Part No. (pair) Fuse Clip Fuse Case Size LRUJ63 LRUJ13 LRUJ16 * LRUJ26 LRUJ21 LRUJ41 LRUJ42 LRUJ64 60A 100A 100A 200A 200A 400A 400A 600A 30A 30A 60A 60A 100A 100A 200A 400A * Fuse and reducer combination is slightly larger in diameter than 100A Class J fuses. For specific applications, contact factory. Class J reducers can not be used in bolt-on applications. 151