Siemens 5ST2140 busbar is a touch‑safe, three‑phase copper busbar designed for modular installation devices in the Siemens 5ST system. It is 210 mm long and supports 12 spacing units, with 10 mm² copper conductors and end caps included for a secure fit with 5SX N‑type miniature circuit breakers. This busbar provides a compact, ready‑to‑wire conductor path for low‑voltage distribution in modular panel assemblies that use Siemens 5ST busbars to couple multiple breakers.
