Siemens SENTRON 3VA1080-2ED42-0AH0 — 80 A 4-Pole MCCB for Line Protection
It carries a 52.5 kA breaking capacity at 240 V, dropping to 32 kA at 415 V and 7.5 kA at 690 V — so it handles high-fault utility feeds in industrial and commercial switchboards.
The 80 A rating holds from 40 °C up to 50 °C ambient, then derates to 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. In a warm panel — say 55 °C near the top of a vertical section — you lose 2 A of headroom. Breaking capacity steps down with voltage: 52.5 kA at 240 V, 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at both 500 V and 690 V.
The breaker measures 130 mm high, 101.6 mm wide, and 70 mm deep — a 4-pole footprint that fits standard Siemens 3VA panel mounting.