Siemens 3NA1121 Fuse 100A 500V Industrial Grade

Siemens 3NA1121 LV HRC fuse-link is an industrial-grade protection device rated for 100 A at 500 V AC, designed to safeguard power circuits in panels and machinery. It is part of the Siemens 3NA low-voltage fuse family and is intended to interrupt fault currents when used with compatible fuse bases, with a front-indicator design that provides quick visual status on a crowded panel. The 3NA1121 specification aligns with other 3NA1-series links at 100 A and 500 V AC, making it suitable for standard LV fuse installations in industrial environments that require robust, clearly visible overcurrent protection from a trusted manufacturer.