The Siemens 3VA1110-1AA32-0JC0 is a SENTRON 3VA1 switch disconnector in the IEC frame 160 footprint — 70 mm deep, 76.2 mm wide, 130 mm tall — rated for 100 A continuous current (Iu) with a maximum AC operational voltage of 690 V and DC operational voltage of 500 V.
Where this part fits in a panel
This is a 3-pole disconnect with busbar connection on the main circuit and front terminals. The 76.2 mm width matches the 3VA1 frame-160 footprint, so it slots into a multi-unit distribution block alongside MCCBs or other disconnectors on the same busbar system. Maximum power loss is 38 W. Verify the enclosure thermal budget if densely packed.
The 100 A rated continuous current (Iu) at 690 V AC means this disconnect can carry 100 A indefinitely without overheating — sized for a 100 A feeder or branch circuit. The 2 kA limited short-time withstand (1 s and 0.5 s) tells you this disconnect can survive a fault current of 2 kA for up to one second — enough for coordination with upstream protective devices that clear faster. It is not a circuit breaker, so it relies on an upstream breaker or fuse to interrupt fault current; the disconnect just needs to hold together until the upstream device opens.