The AZ 17/170-B1 is an emergency stop switch with safety switch accessories manufactured by Schmersal. It is designed for emergency stop applications in industrial environments and complies with EN 1088, IEC 60947-5-1, and IEC 60947-5-5 standards. This safety switch comes with a standard key, and includes one normally closed (NC) contact, one normally open (NO) contact, and a large red emergency stop lid. It is IP67 protection rated, and includes a separate housing to secure the key. The AZ 17/170-B1 requires a DC voltage of 12V and is rated for a current of up to 3A.