Telemecanique ZBE-101 Push Button Add-On Contact Block

ZBE101 is a Harmony 22 mm push-button add-on contact block from Schneider Electric/Telemecanique that front-mounts to XB4/XB5 22 mm push-button assemblies to extend a control circuit with an extra contact. It provides a single normally open (NO) contact (SPST) that closes when the associated button is actuated, enabling signaling or interlocking in a control loop. The contact block uses screw-clamp terminals for secure, field-wirable connections and is designed for front-mount installation on 22 mm operators, with the NO path typically wired between terminals 3 and 4. This compact accessory preserves the 22 mm form factor of Harmony controls while expanding circuit capability, making it a practical choice for adding a simple NO contact to a standard push-button setup in machine or panel applications.