Balluff WZA-11 Switch

Balluff WZA-11 Switch is a safety interlock switch used on guarded industrial equipment, and it is associated with Kronenberg’s WZA family of safety devices. The WZA-11 variant is designed for use with enclosure doors and, according to Kronenberg documentation, is part of the series that includes WZA-10, WZA-11, WZA-11U, and WZA-20, all featuring a hinged lid for straightforward installation and access. As a mechanical safety interlock, it is intended to secure guarding and help ensure that a machine cannot restart while a guard is open; the switch is typically mounted on the door frame and actuated by a corresponding keeper or actuator as the door closes. Exact electrical ratings, contact configurations, and mounting details vary by batch and version, so the specific WZA-11 unit should be verified against the Kronenberg WZA series manual or the product datasheet provided by the seller.