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. The TM220 release combines a thermal bimetal for overload protection and a magnetic coil for short-circuit response; no undervoltage release or ground-fault monitoring is fitted on this variant.
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 insulation voltage is rated 800 V, and the maximum power loss is 19.2 W.
Panel integration and physical fit
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.