The Siemens SENTRON 3VA1080-3ED32-0AD0 is a 3-pole molded case circuit breaker (MCCB) rated for 80 A continuous current at 40 °C, carrying the full 80 A through 50 °C before the first derate step kicks in at 55 °C (78 A) and down to 74 A at 70 °C. That thermal curve means it holds its full rating across most common panel ambient conditions — you only lose headroom above 50 °C, which is typical for a closed cabinet near process heat. Breaking capacity is specified at five voltage levels: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at both 500 V and 690 V. The breaker ships without undervoltage release, ground-fault monitoring, or communication module; it is a straight thermal-magnetic line-protection device, not a metering or remote-trip breaker.
The 76.2 mm width (3 inches) is the standard 3-pole MCCB footprint for this class — it occupies one 3-module position on a DIN rail or direct-mount plate. The auxiliary switch block (3 auxiliary switches HQ) mounts on the side without increasing the pole pitch, so you can add status feedback without widening the footprint.