Schmersal AZ16-03ZVRK Safety Interlock Switch

Schmersal AZ16-03ZVRK is a 16‑mm, key‑operated safety interlock switch from the AZ16 family, designed for guarding doors on industrial machinery. It provides three normally closed (3NC) contacts in a plastic, black housing and uses a key retention feature (the key is maintained upon insertion) to enforce a secure interlock when the guard is closed. The unit is IP67 rated for dust and water ingress protection, making it suitable for demanding production environments. As part of Schmersal’s safety-switch lineup, the AZ16-03ZVRK is intended for use in safety circuits where door closure must be verified before machine operation, and its three NC outputs can feed safety relays or safety PLCs to help ensure the equipment stops if a guard is opened. The AZ16 family encompasses variants with different cable-entry and actuator options, so verify the exact sub-model to match your installation requirements.