The Siemens 3RV1935-1CA00-0FJ0 is a 3-phase busbar designed to feed four circuit-breakers in a size S2 division, with a 55 mm pitch. It's the backbone for distributing three-phase power across a compact group of motor-protective or fuse-protective breakers in a panel.
This busbar snaps onto the S2 breaker bases, eliminating individual phase wiring between four units. The 55 mm division matches the standard S2 footprint, so the assembly stays aligned on the DIN rail without extra bracketing.
