XB7NA21 technical buyer guide for Harmony XB7 flush pushbutton
Use this XB7NA21 brief to identify the Schneider Electric Harmony XB7 flush pushbutton, compare verified catalog characteristics and define what must be checked at the site. The shared collage is a category reference image; it does not depict the exact XB7NA21 configuration.
Key technical data
| Technical item | Verified value / selection note |
|---|---|
| Complete designation | XB7NA21 |
| Product family | Harmony XB7 flush pushbutton |
| Mounting | 22 mm plastic |
| Action | Spring return |
| Contact | 1 normally open |
Buyer question: what must match?
Start with the complete XB7NA21 code, not only a family name. Compare the fitted item's nameplate with the proposed XB7NA21 supply, rating, terminals, mounting and accessories. A close-looking suffix can change the electrical or mechanical interface.
For XB7NA21, document the actual panel or machine duty and any associated drawing. Match panel cutout and control-circuit wiring. When the application is safety-related, have a qualified engineer assess the complete function and applicable design requirements.
At the equipment
Photograph the existing XB7NA21 installation before removal. Record the cable labels, environmental exposure, protective devices and available clearance. If XB7NA21 is part of an automation assembly, back up relevant settings and record the matching controller, drive or accessory revision.
Do not infer drop-in interchangeability from the image or the XB7NA21 family description. Confirm the current manufacturer data and installation manual for the exact XB7NA21 variant; compare the delivered nameplate before work begins.
Order and commissioning notes
The purchasing request for XB7NA21 should state the full code, quantity, required accessories and the intended equipment tag. For legacy equipment, confirm regional availability and lifecycle status rather than assuming that a historically used XB7NA21 remains the preferred replacement.
After qualified personnel install XB7NA21 under site isolation procedures, check wiring, settings and functional response against the approved drawing. Keep the test record with the XB7NA21 designation for subsequent service.
Related-looking model codes
These 13 XB7N-pattern codes resemble XB7NA21 and are indexed on this representative page instead of receiving separate pages in this publishing set. They are not declared equivalent to XB7NA21; verify every complete code and option string.
Release decision
Release the XB7NA21 order only after the exact rating, matching accessories and fit are confirmed. Retain the XB7NA21 data record and commissioning evidence so future maintenance can distinguish this exact variant from adjacent codes.
