At 20A, Littelfuse LLNRK020 extends the LLNRK Series range for 250V AC / 125V DC applications. Its protection profile centers on POWR-PRO Class RK1 fuse operation plus 200kA AC fault interruption. Confirm application details against the manufacturer datasheet.
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The 20A Littelfuse LLNRK020 is part of the LLNRK Series and is designed around a 250V AC / 125V DC rating. A Class R body supports cartridge / clip installation, and the manufacturer lists 200kA AC as the principal interrupting capability. Published dimensions for this rating/configuration are 50.8mm length; 14.3mm max body diameter. POWR-PRO Class RK1 construction emphasizes very strong current limitation for equipment-protection upgrades. Typical uses cover general-purpose circuits, Motor, Transformer, Safety Upgrades. Check UL 248-12|Federal Specification WF-1814 and the manufacturer datasheet before final selection.
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