The Siemens 3VA1163-1AA32-0JH0 is a SENTRON 3VA1 switch disconnector in MCCB design, rated for 63 A continuous current (Iu) across three poles. It provides no overload or short-circuit protection — its job is safe isolation under load, not circuit protection.
The 63 A rated continuous current (Iu) sets the maximum load it can carry continuously without exceeding temperature limits. This is a switch disconnector, not a breaker — it is sized for isolation duty, so the 63 A figure governs the conductor and busbar sizing upstream. The 3-pole design handles three-phase circuits up to 690 V AC or 500 V DC (max rated operational voltage).
Integration notes
The 3VA1163-1AA32-0JH0 mounts with a busbar connection on the main circuit and front terminals for wiring access. Dimensions are 70 mm deep, 76.2 mm wide, and 130 mm tall — fitting the standard 3VA1 frame-160 footprint. The shunt trip release (STL) is wired separately from the main load circuit; verify control voltage matches the 110–127 V DC/AC rating before energizing. The auxiliary contact block provides 2 CO contacts plus 1 trip alarm CO contact, all HQ-rated for signal feedback to a PLC or status lamp.