Schneider Electric XVB-C33 Stack Light Module

The Schneider Electric Harmony XVB-C33 Stack Light Module is a 70 mm diameter green steady-indicator lens unit designed for use in Harmony XVB tower-light configurations. It accepts a wide supply range of 12–230 V AC or DC (up to 250 V) and supports three light-source options: a 10 W incandescent lamp, built-in high-efficiency LEDs (with up to 100,000 hours of service life under LED protection), or 5- and 10-joule discharge tubes, allowing flexible brightness, reliability, and fault-tolerant signaling in industrial environments. The green lens is designed for steady-on operation (non-flashing), providing continuous visibility for status signaling on machines, conveyors, or control panels. For rugged installations, the module carries an IP66 rating and IK05 impact resistance, making it suitable for dusty or washdown-friendly environments. Assembly is modular and stackable, with a removable base and options for axial or side cable entries to match different panel layouts; direct mounting and secure fastening are facilitated by a locking ring. End-of-sale for XVBC33 (the XVB-C33 variant) was December 31, 2025, and Schneider Electric positions the Harmony XVB7 as the successor in the newer generation—though XVB and XVB7 modules are not interoperable with one another. In practice, the XVB-C33 provides a compact, high-visibility green steady indication within a scalable signaling system, ideal for applications where a reliable, multi-source light module is required in demanding production or process environments.