Schneider Electric XVBC21 Signal Indicator Accessory

XVBC21 is the base unit and cover for Schneider Electric's Harmony XVB 70 mm indicator towers, forming an indicating bank that accommodates up to five signaling heads (no flash discharge tube included). It supports direct or tube mounting with bottom or side cable entry, and uses a removable base and locking ring for quick assembly. The base unit dimensions scale with the number of stages: 138 mm for a 1-stage bank, 201 mm for 2 stages, 264 mm for 3 stages, 327 mm for 4 stages, and 390 mm for 5 stages; the enclosure is black and IP65-rated to withstand dust and water jets. Schneider Electric lists XVBC21 as discontinued for commercialization as of December 31, 2025, with end of standard service on July 1, 2026, and notes that the Harmony XVB family is being replaced by the XVB7, with XVBC21 units not interoperable with XVB7.