Schmersal AZM 170SK-11zrka Safety Interlock Switch

The Schmersal AZM 170SK-11ZRKA Safety Interlock Switch is a compact electromagnetically actuated door interlock that provides safety-critical locking for guarded machinery. It carries a 1 NO/1 NC safety contact (the “11” in the model) to monitor door status and enable safe interlock circuits. This 24 VAC/DC variant (AZM 170SK-11ZRKA 24VAC/DC) is designed for demanding environments and is available in other voltage configurations such as 110 VAC variants depending on the order code. Housed in a thermoplastic enclosure with IP67 protection and double-insulated construction, it emphasizes durability and long life with a high holding force to resist premature release. The interlock features protection against incorrect locking to reduce mis-operation, and variants can be wired via either M20 cable entry or M12 connectors to suit installation needs. Some configurations offer a manual release for maintenance. The AZM 170 family is widely used on guard doors for presses, conveyors, and automated equipment where reliable, monitored locking is essential.