The Siemens SENTRON 3VA1163-1AA36-0KH0 is a 3-pole switch disconnector in the 3VA1 IEC frame 160 family, rated for a continuous current Iu of 63 A. It is designed for load-break isolation — it opens and closes a circuit under load but provides no overload or short-circuit protection (that is what the upstream MCCB or fuse handles). The integrated shunt trip (STL) allows remote tripping on a control signal: 220–250 V DC or 208–277 V AC.
Rated insulation voltage Ui is 800 V, and the maximum operational voltage reaches 690 V AC (50/60 Hz) or 500 V DC. The short-time withstand current is 2 kA at both 0.5 s and 1 s — this is the fault current the disconnector can carry without damage while the upstream protective device clears. It is not a breaking capacity; the disconnector is intended for isolation, not fault interruption.
Dimensions: 70 mm deep, 76.2 mm wide (3 inches), 130 mm high. The front terminal arrangement means all power and control connections are accessible from the front — no rear access needed. The 3-pole design fits standard 3-phase distribution panels.