The K1-100S1S1N2 is a K-Series single-pole keylock switch designed for secure, key-operated control. This model features a maintained action, standard terminals for panel mounting with a nut, and a standard nickel-plated finish. It is equipped with copper, silver-plated contacts rated for 4A at 125 VAC or 28 VDC and is UL/CSA approved. With a robust five-tumbler brass lock mechanism, an electrical life of 10,000 cycles, and a dielectric strength of 1,000 Vrms, this switch offers a reliable and low-cost solution for applications requiring protection against unauthorized access.