What the 160 A rating and ETU350 trip unit mean for your panel
The 3VA2116-6HN32-0AA0 is a SENTRON 3VA2 molded case circuit breaker rated for 160 A continuous current at 40 °C through 70 °C — no derating needed across that ambient span, which simplifies panel layout in warm enclosures. The ETU350 electronic trip unit gives you adjustable long-time, short-time, and instantaneous protection curves, so you can coordinate downstream feeders without swapping trip packs. Interrupting capacity hits 242 kA at 240 V and 187 kA at 415 V, meaning it handles high fault currents typical of transformer secondaries or large motor control centers without cascading failure upstream.
Line protection design and integration into a 3-pole footprint
This breaker is designed for line protection — it guards cables and busbars against overload and short circuit, not motor overloads directly. The 3-pole format (105 mm wide, 181 mm tall, 86 mm deep) fits standard Siemens 3VA mounting accessories and busbar systems. IP40 on the front face keeps dust out of the trip unit adjustment compartment in panel environments.