What this part is and what it does
The Siemens SENTRON 3VA1163-1AA42-0AE0 is a 4-pole switch disconnector in an MCCB-style housing — rated for 63 A continuous current (Iu) with a maximum AC operational voltage of 690 V at 50/60 Hz and a DC rating of 600 V. It carries no overload or short-circuit protection; its job is to provide visible isolation and safe disconnection under load for a circuit or panel section. The front face carries an IP40 rating, meaning it's protected against tools and small wires but not washdown — standard for a panel-mounted disconnect.
Key ratings and what they mean for fit
The 63 A rated continuous current (Iu) sets the maximum load this disconnect can carry without exceeding its thermal limits — sized for a 63 A feeder or a motor branch circuit at that ampacity. The 690 V AC rating covers standard 400 V three-phase systems with headroom for 480 V or 600 V line-to-line supplies; the 600 V DC rating makes it usable in battery banks or DC bus disconnects within that voltage ceiling. The 4-pole configuration (3 phases + neutral) suits three-phase systems where the neutral must be switched for isolation — common in European-style distribution panels.
Auxiliary contacts and integration
This variant ships with 4 auxiliary switches (HQ type) built in — that's four CO (changeover) contacts for status feedback to a PLC, door interlock, or remote indication. No undervoltage release or voltage trigger is fitted; if you need undervoltage protection, that's a different order code. The main circuit connects via busbar connection at the front terminals — typical for panel-mounted disconnects where busbars run horizontally across the switchgear. An optional motor drive (listed as a product extension) allows remote motorized operation.