Switch Disconnector in MCCB Footprint
The Siemens SENTRON 3VA1116-1AA32-0AG0 is a 3-pole switch disconnector rated 160 A at 40 °C, built in a molded-case circuit breaker (MCCB) design. It provides load-break isolation without overload or short-circuit protection — it is a disconnector, not a breaker. Rated operating voltage is 690 V AC, with an insulation voltage of 800 V. The front terminals accept busbar connections, making it a direct fit for panel distribution where a compact, high-current disconnect is needed in a standard MCCB mounting footprint.
Thermal Performance and Panel Fit
The 160 A rating holds flat from 40 °C through 50 °C, then derates linearly to 150 A at 70 °C. This thermal curve is nearly flat across the operating range — useful when the disconnector sits in a warm enclosure near other heat sources. Dimensions are 130 mm height, 76.2 mm width, 70 mm depth, fitting the standard 3-pole MCCB cutout. The front is IP40 rated, so it is suited for enclosed panel mounting where tools or fingers are the primary contact risk; no washdown rating on the body. Mechanical service life is 15 000 operating cycles typical. Power loss at rated current is 38 W maximum — account for this in the enclosure thermal budget.
Built-in Auxiliary Switching and Connectivity
This disconnector ships with one auxiliary switch and one trip alarm switch (HP type), providing two CO contacts for status feedback to a PLC or annunciator panel. There is no undervoltage release, no voltage trigger, and no communication function — it is a pure manual disconnect with auxiliary signaling. The main circuit connects via busbar to the front terminals. An optional motor drive can be added for remote operation. The design reference code per IEC 81346-2 is Q, confirming its role as a switching device in the power distribution scheme.