The KSA0A311LFTR is a sealed tactile switch from the KSA & KSL Series, engineered for reliable switching in demanding environments. It features an actuation force of 1.3 N (130 grams) with an operating life of 1,000,000 cycles, a travel to make of 0.5 ± 0.2 mm, and SPST normally-open contact arrangement with IP60 sealing protection. The switch incorporates double overmolding on terminals with PC pins and optional ground pin, cambered terminals for self-retention, and is available with either short (KSA) or long (KSL) hard plastic actuators. With RoHS compliance, automatic or manual insertion capability, and a choice of button styles and colors, this switch is well-suited for automotive, industrial, and telecommunication network applications where durability and environmental protection are essential.