The Siemens 3VA2220-7MQ32-0HG0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for 200 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. The interrupting ratings are the headline here: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 5.2 kA at 690 V. That 330 kA figure at 240 V puts it in the ultra-high interrupting capacity class — it's sized for large transformer secondaries or busway feeds where fault current can exceed 200 kA.
That means if your panel ambient hits 70 °C (e.g., inside a non-ventilated enclosure near a furnace line), this breaker still holds 200 A. The rated insulation voltage of 800 V (Ui) tells you the internal clearances and creepage are designed for 800 V systems, so it's safe to use on 480 V, 600 V, and even some 690 V networks as long as the interrupting capacity at that voltage is adequate. The 'Other Measurement Function' flag indicates it can also report load current and power data over the communication bus — useful for energy monitoring without an extra CT. The auxiliary contact version is 1 auxiliary switch + 1 trip alarm switch HP, which gives you one form-C for status and one for trip indication, both rated for high-performance signaling to a PLC. Power loss is 46 W maximum at rated load.
Mounting is via four screws to a backplate or DIN rail adapter (the 3VA platform uses a separate DIN-rail mounting foot, order code 3VA9988-0AA10, if you need DIN-rail mounting instead of direct screw-mount). The ETU860M trip unit has a local LCD display and keypad for setting protection parameters without needing a laptop. The communication module (ordered separately) plugs into the front face and connects to the network via a standard RJ45 or D-sub connector depending on protocol. The auxiliary contacts are pre-wired to terminal blocks on the side of the breaker — no loose flying leads to manage.