Schneider Electric XB2MD21 Selector Switch 2 Position Spring Return

The Schneider Electric XB2MD21 is a 30 mm panel-mount two-position selector switch with spring return for momentary control in industrial automation. Manufactured by Telemecanique (Schneider Electric) and part of the XB2-M family, it features a black standard-handle operator and a chromium-plated metal bezel for durable panel installation. With two positions and a spring-return action, it provides momentary input suitable for jog, inching, or directional control and automatically returns to the home position after actuation. The device uses screw terminals (contact blocks dependent) and mounts in a 30 mm opening on a control panel. Key specifications include operating temperature of -25 °C to +70 °C, mechanical durability up to 1,000,000 cycles, and adherence to IEC 60947-1, IEC 60947-5-1, and IEC 60947-5-4 standards. Common applications encompass industrial control panels, machinery, and automation systems, including control panels, motor control centers, packaging machinery, conveyor systems, and process equipment that require a reliable momentary selector input.