The Siemens 3VA1116-1AA36-0HA0 is a SENTRON switch disconnector in an MCCB (molded case circuit breaker) form factor — IEC frame 160, 3-pole, rated 160 A continuous. It provides a visible-break isolation point for a circuit, but carries no overload or short-circuit protection elements. The part is designed for applications where disconnection and isolation are the primary need, not overcurrent protection.
Rated at 160 A continuous from 40 °C through 50 °C ambient, it derates to 150 A at 70 °C — so in a warm panel (say 55 °C) you still have 158 A of headroom before the switch needs to be upsized. The rated insulation voltage is 800 V, and the maximum operating voltage is 690 V AC or 500 V DC, making it suitable for 400/480 V three-phase distribution as well as DC bus applications up to 500 V. No undervoltage release is fitted, and there are no auxiliary contacts on this variant. Mechanical service life is 15,000 operating cycles typical — enough for a main disconnector cycled a few times a day over a decade, but not rated for frequent switching under load.
The 3VA1116-1AA36-0HA0 uses front terminals for the main circuit connection, accepting lugs or cable lugs. Dimensions are 130 mm height, 76.2 mm width (standard 3-pole MCCB footprint), and 70 mm depth.