The Siemens 3VA1116-1AA32-0HH0 is a SENTRON 3VA1 switch disconnector in MCCB design, rated for 160 A continuous current (Iu) across 3 poles. It is built for isolation and switching duty without integral overload or short-circuit protection — the protection function is handled upstream or by a separate release. Busbar connection on the front terminals keeps panel wiring clean for high-current feeds.
The 160 A rated continuous current (Iu) determines the maximum load this disconnector can carry continuously without exceeding its thermal limits. For motor or resistive loads at that current, the 38 W maximum power loss must be dissipated within the enclosure — factor that into panel thermal calculations. The rated insulation voltage of 800 V and max operational voltage of 690 V AC 50/60 Hz or 500 V DC cover standard 400/480 VAC industrial supplies and many DC bus applications, but the DC rating is the limiting factor for battery or drive-link circuits.
This 3-pole disconnector mounts in a panel or enclosure on a DIN rail or direct-mount plate — the 76.2 mm width, 70 mm depth, and 130 mm height fit standard 3VA1 frame spacing. Front terminals with busbar connection mean the main power path is a bolted bus link, not lugged wire; plan for busbar drop-in rather than individual cable terminations. IP40 on the front is splash-protected but not washdown-rated — keep it behind a sealed enclosure door in wet environments.
Operating limits and endurance
The shunt trip coil (STL) on this variant triggers on a separate control signal; there is no undervoltage release or communication function built in.