The Siemens SENTRON 3VA2116-5HN32-0JL0 is a 3-pole molded case circuit breaker rated for 160 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed as the panel warms up. Breaking capacity hits 187 kA at 240 V and 121 kA at 415 V, which means it can interrupt a fault upstream of a 2 MVA transformer without the arc flashing over to the bus. Line protection design means the trip curve is shaped for cable and busbar protection, not motor starting.
Panel fit — how wide on the rail?
That 105 mm width is three 35 mm DIN modules, so it fills the same space as a standard 3-pole MCCB. Depth of 86 mm leaves enough room behind a 200 mm deep enclosure for the line and load lugs without crimping the bends. Power loss is 25.5 W maximum. In a packed panel with multiple breakers side by side, that heat adds up — keep the ambient inside the enclosure below 70 °C or plan for forced ventilation. The breaker itself is rated for 70 °C operating ambient, but the heat rise from neighbors can push internal air past that.
Auxiliaries and releases — what ships inside
Factory-fitted with 2 auxiliary switches plus a trip alarm switch and an electrical alarm switch.