The Siemens SENTRON 3VA1080-3ED32-0JH0 is a 3-pole molded case circuit breaker (MCCB) rated for 80 A continuous current (Iu) with a TM210 thermal-magnetic overcurrent release, built for line protection in distribution panels and industrial switchgear. Its interrupting capacity hits 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V — the 415 V figure is the one that typically governs for European 400 VAC distribution, giving solid headroom for high-fault panels without cascading upstream breakers.
Current rating and thermal derating
The breaker holds its full 80 A from 40 °C up to 50 °C, then begins a gentle derating curve: 76.8 A at 55 °C, 75.2 A at 60 °C, 73.6 A at 65 °C, and 72 A at 70 °C. In a sealed panel with poor airflow, that 70 °C ambient limit means you lose 10 % of the nominal capacity — plan your thermal budget if the breaker sits near transformers or drives.
Physical dimensions and panel fit
The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or mounting-plate layouts without surprises.
Ancillary functions and auxiliary contacts
This version includes a shunt trip (STL) auxiliary release, a voltage-trigger function, and a trip indicator. The auxiliary contact block is configured as 2 auxiliary switches plus 1 trip alarm switch (HQ). No undervoltage release, no phase-failure detection, no communication module — this is a clean line-protection breaker, not a smart meter.