The Siemens 3VA1080-3ED32-0DA0 is a SENTRON molded case circuit breaker (MCCB) rated 80 A at 40 °C with a 75.6 kA interrupting capacity at 240 VAC — that's the headline number for panel builders coordinating downstream branch protection. Three poles, thermal-magnetic TM210 trip unit, and an undervoltage release (UVR) built in. Breaking capacity drops as voltage climbs: 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 500 V and 690 V. The 80 A rating holds steady from 40 °C up to 50 °C, then tapers to 74 A at 70 °C, which matters for high-ambient enclosures or tightly packed switchboards.
UVR factory-fitted; connect control voltage to drop breaker on loss of supply. Power loss 21.7 W maximum. Insulation voltage rated 800 V.