At 300A, Littelfuse LLNRK300 extends the LLNRK Series range for 250V AC / 125V DC applications. The construction uses POWR-PRO Class RK1 fuse characteristics and a 200kA AC primary interrupting rating. Use the Littelfuse datasheet to verify final circuit suitability.
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The 300A Littelfuse LLNRK300 is part of the LLNRK Series and is designed around a 250V AC / 125V DC rating. The physical format is Class R; mounting is cartridge / clip, with ferrule / blade (amp-dependent) termination and 200kA AC rated interruption. Published dimensions for this rating/configuration are 219.1mm length; 53.2mm max body diameter. POWR-PRO Class RK1 construction emphasizes very strong current limitation for equipment-protection upgrades. The listed application set includes general-purpose circuits, Motor, Transformer, Safety Upgrades; final coordination should follow UL 248-12|Federal Specification WF-1814 and Littelfuse documentation.
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