Siemens 3VA1120-3EE46-0AA0 — 20 A MCCB, 4-Pole, TM220 Trip
Breaking capacity reaches 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — figures that give the panel builder headroom for high-fault utility feeds without cascading upstream.
Rated current holds at 20 A from 40 °C through 55 °C ambient, then derates to 19 A at 60 °C through 70 °C — a thermal curve that matters when the breaker shares a crowded enclosure with other heat sources.
Key dimensions (70 mm depth, 101.6 mm width) and the 4-pole footprint are shared across the 3VA family.