The Siemens SENTRON 3VA1163-1AA42-0AG0 is a 4-pole switch disconnector in MCCB design, rated at 63 A continuous current (Iu). It provides no overload or short-circuit protection — it's a disconnect-only device for isolating a circuit under load. The 690 V AC (50/60 Hz) or 600 V DC rating covers most industrial panel voltages. Front terminals accept busbar connection, and the IP40 front protection suits enclosed panel mounting.
What the ratings mean for fit
The 63 A rated continuous current (Iu) is the maximum current the switch can carry continuously without exceeding temperature rise limits. For motor circuits, that typically covers a 30–37 kW motor at 400 V AC-3 duty, but this part carries no short-circuit or overload trip curve — the upstream feeder breaker or fuse provides that protection. The 4-pole design switches all three phases plus neutral, required for TN-S or TT systems where the neutral must be isolated. The max power loss of 38 W at rated current matters for enclosure thermal calculations: a panel with several such switches needs ventilation or derating above 40 °C ambient.
Panel integration notes
Dimensions are 130 mm height × 101.6 mm width × 70 mm depth. The front-terminal busbar connection means it mounts on a DIN rail or panel base with busbar fingers feeding the line side. The IP40 front (protected against tools >1 mm, no water protection) is standard for enclosed switchgear — not for washdown or outdoor use without an additional enclosure. The auxiliary contact pack includes one auxiliary switch (signal open/closed) and one trip alarm switch HP (signals a fault trip from the upstream protection), both rated for 24 V DC control circuits typical in PLC inputs.