The ABB C2SS5‑30B‑11 is a compact two‑position rotary selector switch designed for industrial control panels, machine operator stations, and automation systems. It features a black short‑handle actuator with a chrome metal bezel and is non‑illuminated. The switch provides one normally open (NO) and one normally closed (NC) auxiliary contact for control and signaling functions. Its 22 mm panel mounting and robust design make it suitable for harsh industrial environments, offering high resistance to dust and water ingress on the front face while maintaining secure and reliable electrical switching performance.