SENTRON 3VA1080-4ED32-0HC0 — 80 A MCCB with 121 kA SCCR at 240 V
The Siemens SENTRON 3VA1080-4ED32-0HC0 is a 3-pole molded case circuit breaker rated for 80 A continuous current at 40 °C, with an interrupting capacity of 121 kA at 240 VAC — that figure drops to 75.6 kA at 415 V and 52.5 kA at 440 V, so the available fault current at your service voltage is the number that governs coordination studies. It carries a rated insulation voltage of 800 V and is designed for line protection, not motor or generator protection.
Current derating and thermal limits
The 80 A rating holds flat from 40 °C through 50 °C ambient. Above that it derates: 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. If your panel ambient runs above 50 °C, size the breaker for the derated value — not the nameplate 80 A. Maximum power loss is 19.2 W, which matters for enclosure thermal rise calculations in a sealed panel.
Panel fit and auxiliary options
The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that drops onto a DIN rail or mounts directly to a backplate. It ships with a shunt trip (STL) auxiliary release and two HQ auxiliary switches pre-installed, so you don't need to order those separately for remote trip indication or status feedback. No undervoltage release, no ground-fault monitoring, and no communication module on this variant.