The ABB M3SSK3-101 is a modular selector switch designed for reliable control in industrial settings. This switch features a key-operated actuator, allowing for secure and precise operation. Measuring 03 MR in width and height, with a depth of 063 MR, it has a compact footprint suitable for various panel installations. The bezel is made from durable black plastic, providing a sturdy and professional finish. It’s a non-illuminated model with a three-position function that returns positions A and C back to B, and the key can be removed only when in position B. Distributed by BSP Automation, this selector switch is a solid choice for applications that demand controlled access and clear position indication. In the trade, you might hear it casually referred to as “the key switch” for its secure operation style.