Schmersal AZ16-02ZVRK-M20 Safety Switch With Key Interlock

Schmersal AZ16-02ZVRK-M20 is a safety interlock switch with a key-operated mechanism designed for guarding doors on machinery. It features two normally closed contacts (2NC) within the AZ16 family, providing the safety circuit feedback needed to verify door status. Housed in a fiberglass-reinforced thermoplastic enclosure, it offers a large wiring compartment and three M20 cable entries (M20 x 1) for flexible terminations. The unit is double-insulated and compact, with dimensions of 52 mm by 90 mm by 30 mm, and universal coding that allows actuators to be swapped without losing safety functionality. Electrical ratings include up to 4 A at 230 VAC for the switch contacts, suitable for common safety-control circuits. The AZ16-02ZVRK-M20 carries safety certifications such as cULus and CCC and is designed for demanding environments with IP67 protection and insensitivity to soiling, making it a reliable choice for industrial guard applications. As a keyed interlock, the device ensures that the door cannot be opened while the machine is in a hazardous state, and the universal coding supports integration with other AZ16 actuators for tailored guard-lock configurations.