The Siemens 3VA1180-5EF32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection, carrying 80 A continuously at 40 °C ambient with a 3-pole configuration. Its TM240 thermal-magnetic trip unit provides fixed overload and short-circuit protection without undervoltage or shunt-trip accessories — a clean, no-frills breaker for distribution panels where selectivity and fault isolation are the priority.
What the ratings mean for the panel
The breaking capacity tells the real story: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. Those numbers are the maximum fault current this MCCB can safely interrupt at each voltage — critical when coordinating with upstream transformers or generators that can dump tens of kiloamps into a bolted fault. At 690 V the 17 kA figure still covers most industrial distribution scenarios, but if your system fault level exceeds that, you need a higher-rated frame upstream. Thermal derating is worth noting: it holds 80 A flat from 40 °C through 50 °C, then drops to 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. That means a panel running at 55 °C ambient — common inside a sealed enclosure with other heat sources — still carries 78 A per pole without nuisance tripping. The insulation voltage is rated 800 V, so the breaker can live on a 690 V bus without creeping clearance issues.
Panel integration
The 3VA1180-5EF32-0AA0 measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a 3-pole MCCB that fits Siemens standard mounting plates and busbar systems. Front IP40 protection means it's fine inside a closed panel but not for washdown environments. No communication function, no ground-fault monitoring, no voltage trigger: this is a pure thermal-magnetic breaker for line protection, not a smart or metering device.