Interrupting capacity and thermal-magnetic release
The Siemens SENTRON 3VA1180-4EE36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated 80 A at 40 °C, with a TM220 thermal-magnetic overcurrent release. Its interrupting capacity hits 121 kA at 240 VAC and 75.6 kA at 415 VAC — numbers that govern selectivity coordination in high-fault panels, not just the branch rating.
Current derating across temperature
The breaker holds 80 A continuously from 40 °C through 50 °C, then derates to 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. For a panel running warm — say near the top of a crowded enclosure — the 65 °C column (75 A) is the real continuous rating to use for load planning.
The 3VA1180-4EE36-0AA0 measures 70 mm deep, 76.2 mm wide, and 130 mm tall — a standard SENTRON 3VA footprint that mounts directly to a backplate or DIN rail via the integrated clip. Front-face protection is IP40, sufficient for enclosed panel use but not for washdown environments. The 3-pole design occupies a single modular width; no communication module or voltage-trip accessory is included, so the wiring bay stays clean for the power conductors only.