The Siemens 3RV1915-6AB00-0FJ0 is a cover for connection lugs, designed for the S00 and S0 frame sizes within the SIRIUS 3RV motor starter protector family. It is a straightforward accessory — no wiring, no ratings to derate — that closes off the lug terminals on the line or load side of the breaker.
This cover snaps onto the connection lugs of a 3RV motor starter protector in frame S00 or S0. It provides touch protection after the lug terminals are torqued — a panel builder installs it as the last step before closing the enclosure. No tools required; it clips into the existing lug recess. Because it is a passive accessory, the only fit check is frame size: S00 and S0 share the same lug geometry, so this one cover serves both. If your BOM calls for a 3RV1915-6AB00-0FJ0, it is the correct cover for those frames.