The Siemens SENTRON 3VA1163-1AA32-0KC0 is a 3-pole switch disconnector in the 3VA1 IEC frame 160 platform, rated for 63 A continuous current (Iu) without integral overload or short-circuit protection — it's a pure isolating and switching device, not a circuit breaker.
Rated insulation voltage Ui is 800 V, and maximum operational voltage reaches 690 V AC (50/60 Hz) or 500 V DC — so it's comfortable in 400 V or 480 V distribution panels and in DC bus circuits up to 500 V. The limited short-time withstand is 2 kA at both 1 s and 0.5 s intervals, which means this disconnector is intended for downstream isolation behind a higher-rated upstream protective device; it's not rated to break fault current on its own.
The main current circuit connects via busbar connection with front terminals.