The Siemens SENTRON 3VA1220-4EF32-0BH0 is a 3-pole molded case circuit breaker rated for 200 A continuous current at 40 °C, with a TM240 thermal-magnetic release. It holds the same 200 A rating through 50 °C, then derates to 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C — so in a warm panel you lose about 12 % of capacity at the top of the operating range. Interrupting capacity runs 121 kA at 240 V, 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V, which covers most industrial distribution fault levels without cascading upstream. Front-side IP40 keeps dust out of the mechanism; the enclosure is sized at 105 mm wide × 158 mm high × 70 mm deep — a standard MCCB footprint for a 200 A frame.
The TM240 release is factory-set and non-interchangeable in the field — verify your cable sizing and coordination study against the 200 A continuous rating before committing the BOM. Undervoltage release coil wiring shares the same terminal compartment as the auxiliary contacts; keep the free-wheel diode polarity correct if the UVR is driven by a DC control supply. The trip indicator on the front face gives a visual flag after a fault event, which saves a multimeter walk during troubleshooting.