The Siemens 3VA2216-5HN32-0KG0 is a 3-pole IEC molded case circuit breaker from the 3VA2 series, frame size 250, with a breaking capacity class M rated at 55 kA at 415 V AC. It carries an ETU350 LSI trip unit, adjustable overload protection Ir from 63 A to 160 A, and short-circuit protection Isd from 1.5 to 10 times Ir, with instantaneous pickup Ii at 12 times In. This variant includes a shunt trip (STL) rated for 220-250 V DC or 208-277 V AC, one auxiliary switch HP, one trip alarm switch HP, and a nut keeper kit.
What the Ratings Mean
The 55 kA Icu at 415 V is the ultimate short-circuit breaking capacity — the breaker can safely interrupt a fault current up to that level once without needing replacement. The ETU350 LSI trip unit provides electronic adjustable long-time (L), short-time (S), and instantaneous (I) protection, letting you fine-tune the curve to the load. The 160 A frame with Ir adjustable down to 63 A gives flexibility to match downstream cable or motor ratings without swapping the breaker body.
Integration Notes
Mounts in a standard panel on DIN rail or via the 3VA mounting plate. The shunt trip coil draws from a separate control circuit — verify polarity on the DC version (220-250 V DC) and that the AC supply matches the 208-277 V AC range. The auxiliary and trip alarm switches provide status feedback to a PLC or annunciator panel; wire them as dry contacts rated for the control voltage. The nut keeper kit retains the line/load lug fasteners during high-vibration environments like near motor starters or transformer feeds.