Siemens NSNBC01 illuminated push-button switch, part number 555-1106, is an industrial control input from Siemens. The NSNBC01 designation appears in Siemens catalogs and third-party listings, confirming its alignment with Siemens' illuminated push-button and indicator-light family. This device combines a push-button actuator with integrated illumination to provide visible status feedback in control panels and machine enclosures.
