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.
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.
Front IP40 protects against tool entry and solid objects larger than 1 mm — adequate for clean indoor panels, not for washdown zones.