The Siemens 3VA1163-1AA42-0AH0 is a SENTRON 3VA1 switch disconnector in an MCCB-style housing — IEC frame 160, 4-pole, rated 63 A continuous. It provides visible-break isolation with no overload or short-circuit protection built in, so it's a dedicated disconnecting means, not a circuit breaker. That 600 V DC rating makes it usable in battery or DC-bus isolation applications where many AC-only disconnects can't go. Front terminals accept busbar connections, and the IP40 front protection keeps finger contact out during normal panel access.
Auxiliary switching and mechanical life
Mechanical service life is 15 000 operating cycles, typical for a disconnect used in maintenance isolation rather than daily motor starting.