What this MCCB is and where it fits
The Siemens 3VA1080-4ED32-0AA0 is a SENTRON molded case circuit breaker (MCCB) built for line protection — think main feeder or large branch in a distribution panel where you need high interrupting capacity without the footprint of a power breaker. Rated 80 A continuous at 40 °C and derated to 74 A at 70 °C, so the thermal curve is predictable across a warm enclosure; the TM210 overcurrent release handles the fixed thermal and magnetic trip settings. Breaking capacity sits at 121 kA at 240 V and 75.6 kA at 415 V — that's serious fault current handling for industrial mains, not just light commercial.
Panel fit and wiring
Three-pole, 130 mm tall, 76.2 mm wide, 70 mm deep — it's a standard MCCB footprint that drops into most SENTRON mounting plates or DIN-rail adapters without re-drilling. Rated insulation voltage is 800 V. IP40 on the front means it's fine in a closed panel but not for washdown or outdoor exposure without an enclosure.
Thermal budget and environment
Max power loss is 19.2 W — that's the heat it dumps into the panel at full load, so factor that into your thermal calculation if the box is tight. Operates from -25 °C to 70 °C and stores from -40 °C to 80 °C, covering most indoor industrial conditions without special derating.