Schneider Electric XVB-C4M4 Stack Light

Schneider Electric Harmony XVB-C4M4 is a red 70 mm indicator bank for Harmony XVB modular tower lights, functioning as the illuminated unit that provides a flashing red status signal within a stacked beacon assembly used for clear visibility on industrial equipment and control panels. This plastic housing accepts either bulb-based or LED light sources and is rated for a supply range of 48–230 V AC, enabling flexible integration with a variety of control panels and industrial equipment, and it is designed to be mounted in line with other XVB modules to form a multi-color signaling tower. As part of the Harmony XVB family, the XVBC4M4 is designed to be paired with other XVB components to form a complete beacon, including lens units and a base; however, Schneider Electric has moved to the newer XVB7 platform and XVB and XVB7 modules are not interoperable, meaning that a XVBC4M4 cannot be mixed with XVB7 in a single signaling stack. The XVBC4M4 reference was discontinued by Schneider Electric on June 30, 2025, with end-of-service dated July 1, 2026, and the recommended replacement for new installations is the Harmony XVB7 family, which is not interoperable with XVB components.