Schneider Electric 9001KS11B 3 Position Selector Switch

Schneider Electric 9001KS11B 3-position selector switch is a heavy‑duty, maintained‑operation control device designed for multi‑position circuit switching in industrial environments. Part of the 9001K Heavy‑Duty series (9001KS11B / 9001KA1), it uses a knob operator and ships with five contact blocks for expanded contact configurations that depend on the block combination. It is commonly installed in control panels, operator stations, and industrial machinery that require 3-position maintained operation and multiple circuit states from a single operator device. The 30.5 mm mounting diameter fits standard panels, and the enclosure is rated NEMA 4 and 13 for challenging environments. Electrical ratings include up to 600 VAC and up to 10 A with appropriate contacts, with screw terminals for secure wiring. Operating temperature ranges from -25°C to +70°C, supporting reliable performance across harsh industrial conditions. Common replacements include Schneider Electric XB4BD33, Allen-Bradley 800T-J2A, and Siemens 3SB3500-4EA31.