Schneider Electric 9001KS12K1 Key Operated Selector Switch

The Schneider Electric (Square D) 9001KS12K1 Key Operated Selector Switch provides secure manual selection for industrial control systems, enabling restricted operation with a key in control panels, operator stations, and machinery. This 2-position maintained switch (operator type: key operated) uses a 30.5 mm mounting diameter and a contact configuration of 1 NO + 1 NC (with K1 contact block), with screw terminals for reliable wiring. It carries a NEMA 4, 13 enclosure rating and is rated up to 600 VAC and up to 10 A, with an operating temperature range of -25°C to +70°C. Common replacements include Schneider Electric XB4BG21 Key Selector Switch, Allen-Bradley 800T-H2 Key Selector Switch, and Siemens 3SB3500-4EA31 for retrofit or replacement in existing deployments.