The Siemens SENTRON 3VA1450-6EE32-0AA0 is a 3-pole molded case circuit breaker (MCCB) designed for line protection, carrying a continuous current rating of 500 A at 40 °C ambient and a rated insulation voltage of 800 V. Its TM220 thermal-magnetic release provides fixed overload and short-circuit protection, making it a straightforward fit for main feeder or large branch circuits in industrial distribution panels.
At 240 V AC the interrupting rating reaches 220 kA, dropping to 154 kA at 415 V and 440 V, 121 kA at 500 V, and 17 kA at 690 V. That 220 kA figure at 240 V suits high-fault utility or transformer-fed services where available short-circuit current is extreme. The continuous current holds at 500 A through 50 °C ambient; above that it derates in 12 A steps per 5 °C increment, reaching 452 A at 70 °C. Panel builders should account for the 122.7 W maximum power loss when sizing enclosure ventilation.
The 3-pole form factor and TM220 release mean no auxiliary electronics or communication module; it is a straight electromechanical device for line protection without ground-fault monitoring or undervoltage release.