The Siemens 3RV2917-1E is a SIRIUS three-phase busbar with infeed on the right, designed to distribute power to two 3RV2 circuit breakers in sizes S00 and S0. Rated at 63 A and 500 V AC (600 V AC per UL), it feeds a pair of breakers from a single incoming supply — common in motor control centers where two starters share a branch circuit.
Snap-on fastening on 35 mm DIN rail, mountable in any position. The 86.5 mm depth fits standard 100 mm deep enclosures; the 110 mm width matches the footprint of two S00/S0 breakers side-by-side. Spring-loaded terminals for the main circuit — no torque driver needed, just strip and insert.
Electrical ratings and environment
Three-pole construction. The 63 A thermal current matches the busbar's continuous rating — no derating needed for the breaker pair at full load.