What this 3VA1 frame 160 breaker carries
The Siemens 3VA1116-4EE32-0AA0-ZD00 is a 3-pole IEC frame 160 molded case circuit breaker with a breaking capacity class S rating of 36 kA at 415 V — that's the Icu, the ultimate short-circuit breaking capacity the breaker can safely interrupt once without damage. It uses a TM220 thermal-magnetic trip unit: the thermal element provides overload protection adjustable from 112 A to 160 A (Ir), and the magnetic element trips instantaneously at 10× In (Ii = 1600 A). The nut keeper kit is included for DC Power OEM applications in China. The 160 A frame means the breaker body is sized for conductors and busbars rated up to that continuous current; the adjustable overload band lets you dial in the exact motor or feeder protection without swapping the trip unit. For a panel builder, that means one SKU covers a range of downstream loads.
Integration notes for the panel
Mounts on a standard DIN rail or panel-mount plate inside the enclosure. The 3-pole footprint matches the 3VA1 family — same width as other frame 160 breakers, so busbar and cable lug layouts are consistent across the lineup. The nut keeper kit simplifies assembly for DC Power OEM builds: it retains the mounting nuts during installation, saving time on the line.