Within the KLNR Series, Littelfuse lists KLNR050 for 50A service. Its key electrical ratings are 250V AC / 125V DC with 200kA AC breaking capability. The economical single-element RK1 construction is extremely current-limiting and suited to non-inductive loads. Use the linked Littelfuse datasheet to confirm coordination, approvals and installation details.
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The Littelfuse KLNR Series identifies KLNR050 as its 50A option. Voltage and fault-current selection are defined by 250V AC / 125V DC and 200kA AC, respectively. The economical single-element RK1 construction is extremely current-limiting and suited to non-inductive loads. Mechanical selection uses a Class R format with Cartridge / Clip installation and ferrule / blade (amp-dependent) termination. Published dimensions are 76.2mm length; 20.6mm max body diameter. Typical applications include Resistance Heaters, Lighting, Non-Inductive Loads, General Purpose. Check the official Littelfuse datasheet before final coordination.
