ABB M3SS1-10B

The ABB M3SS1-10B is a rugged 22.5 mm selector switch operator that’s built to handle demanding control panel environments. Featuring a black bezel and knob-style actuator, this non-metallic switch offers a reliable 3-position, maintained operating mode with a 45° throw angle. Its robust design meets multiple NEMA ratings—including 1, 3R, 4, 4X, 12, and 13—making it suitable for a wide range of indoor and outdoor industrial applications. Note that a contact block holder needs to be added for complete installation. Sometimes called a Hand Off Auto switch, this versatile component is available through BSP Automation, your go-to source for quality automation gear. This selector is the real deal when you need a dependable, no-nonsense operator for your control system.