The Siemens 3VA1116-1AA36-0KC0 is a 3-pole SENTRON switch disconnector in the 3VA1 IEC frame 160, rated for a continuous current Iu of 160 A. This is the SD100 variant — it provides no overload or short-circuit protection, so it functions purely as a load-break disconnect for isolation and switching under load. The shunt trip release (STL) operates on 220-250 V DC or 208-277 V AC, letting you trip it remotely via a control signal. Two HQ auxiliary switches are built in for status feedback to a PLC or indicator lamp.
What the ratings mean for fit
The 160 A rated continuous current (Iu) sets the maximum load it can carry continuously without overheating — sized for a 160 A feeder or a large motor branch circuit where the upstream breaker handles fault protection. The max AC operational voltage is 690 V 50/60 Hz, and max DC is 500 V, covering standard 400 V three-phase panels and 480 V industrial supplies. The 38 W maximum power loss at full load matters for enclosure thermal management; in a sealed panel you need to account for that heat rise. The front terminal connection accepts clamp-type conductors, common for panel builders who prefer tool-less wiring on the main circuit.
Where it fits in the panel
The footprint is 70 mm deep by 76.2 mm wide by 130 mm tall — a compact 3-pole frame that mounts on a DIN rail or directly to a backplate. The front terminal arrangement means busbar connections or cable lugs land on the face, not the rear, which simplifies wiring in shallow enclosures. IP40 on the front keeps out tools and fingers but not moisture; install in a dry indoor cabinet or add a cover for washdown areas.