The Siemens 3VA1116-1AA36-0DA0 is a SENTRON 3VA1 IEC frame 160 switch disconnector — a 3-pole, 160 A rated continuous current (Iu) device in MCCB-style construction, but without overload or short-circuit protection elements. Its job is to provide a visible break and safe isolation under load, not to protect downstream conductors.
Rated continuous current Iu of 160 A sets the maximum uninterrupted current the disconnector can carry in free air without exceeding its thermal limits. That 160 A figure is the sizing anchor: the downstream load (motor, heater, distribution bus) must not exceed it. The max AC operational voltage is 690 V 50/60 Hz, and the max DC operational voltage is 500 V — so it works on 400 V three-phase panels and on 480 V DC bus systems. Short-time withstand ratings are 2 kA at both 1 s and 0.5 s — that is the fault current the disconnector can survive closed without welding or damage. It is not a breaking capacity; the upstream protection (fuse or MCCB) must clear faults below 2 kA within those time windows to keep this device intact.
Panel-mount device with front terminal connections for the main circuit.