The Siemens 3VA1180-6EE42-0AA0 is a SENTRON 4-pole molded case circuit breaker rated 80 A continuous at 40 °C, with a TM220 thermal-magnetic overcurrent release designed for line protection. Breaking capacity reaches 220 kA at 240 V, dropping to 154 kA at 415 V and 121 kA at 440 V — figures that cover high-fault industrial services where upstream transformer capacity is large. The 70 mm depth and 101.6 mm width match the standard SENTRON 3VA footprint for panel integration.
Breaking capacity and thermal derating
At 500 V and 690 V the interrupting rating is 17 kA — still adequate for most 480/600 V distribution, but not for high-fault 690 V services. The thermal derating curve holds 80 A flat through 50 °C, then steps down: 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. That 6 A drop from 50 °C to 70 °C is tight — the breaker runs near its full rating even in a warm enclosure. Insulation voltage is rated 800 V, so the 690 V application is within the dielectric margin.
Panel integration notes
Mounts on a DIN rail or directly to a backplate via the 4-pole base. Front IP40 protects against tool entry and solid objects larger than 1 mm — adequate for clean indoor panels, not for washdown zones. No undervoltage release, no shunt trip, no communication module on this variant; the TM220 release is purely thermal-magnetic, so trip indication is mechanical (handle position). Power loss at full load is 19.2 W — factor that into enclosure thermal calculations.