What this MCCB does — and what the ratings mean for your panel
The Siemens SENTRON 3VA1080-3ED32-0HH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection duty, carrying a continuous current Iu of 80 A at 40 °C. That 80 A holds flat through 50 °C — only at 55 °C does it begin to derate to 76.8 A, and at 70 °C it still delivers 72 A. For a panel that runs warm, this means the breaker doesn't force a de-rate until the ambient actually crosses 50 °C, giving you thermal headroom most 80 A frames don't. The interrupting ratings climb with the voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V. At 415 V, that 52.5 kA covers most industrial service-entrance and feeder applications in IEC markets — you're not bumping into the upstream fuse limit on a typical 400 V distribution board. The overcurrent release is a TM210 thermal-magnetic unit — fixed thermal pickup, magnetic trip factory-set. No communication function, no phase-failure detection, no ground-fault monitoring. This is a pure line-protection breaker: feed it, protect the cable, move on. The shunt trip (STL) auxiliary release is built in, and the auxiliary contact configuration is 2 auxiliary switches plus 1 trip alarm switch (HQ). That alarm switch gives you a remote signal when the breaker trips — useful for a PLC digital input without adding an external relay. Mechanical endurance is rated at 15 000 operations — typical for a distribution MCCB in a panel that sees occasional switching, not a motor-starting duty cycle. IP40 on the front keeps dust out of the enclosure cutout; the rest of the breaker is inside the panel, so the IP rating matters mostly for the operator interface.
Sourcing and lifecycle — still in active production
The lifecycle stage for the 3VA1080-3ED32-0HH0 is listed as current — meaning Siemens still manufactures this exact order code. No last-time-buy, no phase-out notice. For a BOM freeze or a spares kitting run, this is the straightforward path: order the same code, no replacement qualification needed. Sourced to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time — volume breaks are standard for this class of MCCB, and the supply channel is stable for an active Siemens SENTRON line part.
Integration — what fits in the panel cutout
The 3VA1080-3ED32-0HH0 measures 130 mm high, 76.2 mm wide, and 70 mm deep. That 76.2 mm width is the standard 3-pole MCCB footprint for the 3VA frame — it occupies three 25.4 mm module positions on a DIN rail or panel-mount plate. Depth of 70 mm means it clears most 200 mm deep enclosures with room for wiring gutters behind it.
Environmental range and storage
Operating temperature spans -25 °C to 70 °C; storage extends from -40 °C to 80 °C. The storage range is wider — that's the handling and warehousing envelope, not the running condition. Insulation voltage rated at 800 V, which covers 480/277 V and 600 V systems with margin.