Schneider Electric ZB4BW7A9 Harmony Push Button

Schneider Electric Harmony XB4 ZB4BW7A9 is the head for an illuminated double-headed push button designed for 22 mm panel cutouts and shipped without a cap. This head is part of the Harmony XB4 family and is intended to be used with XB4 series modules to create a dual-action control on a single mounting footprint in industrial control panels. The unit is an illuminated double-head design, with a center pilot light, enabling visual indication in powered applications. Because it is sold as a head, a separate bezel/cap and actuation assembly must be paired to complete the push-button unit. Key specifications include a 22 mm mounting diameter, compatibility with Harmony XB4 push-button modules, and the two integrated push-button actuators within one head. This head supports compact panel layouts where dual input or status indication is required in automation and machinery control, such as conveyors, packaging lines, and process equipment.