The Siemens SENTRON 3VA2220-7MN32-0AG0 is a 3-pole molded case circuit breaker rated for 200 A continuous current (Iu) with an ETU350M electronic trip unit. That trip unit gives you phase-failure detection and a motor-protection curve, so it is sized for motor branch circuits where you need adjustable overload protection plus short-circuit interruption in one package. The interrupting ratings climb to 330 kA at 240 V and still hold 242 kA at 415 V, which means this breaker can sit ahead of a motor starter in a high-fault panel without needing a current-limiting fuse upstream.
Rated continuous current Iu is 200 A, and it holds that rating across ambient temperatures from 40 °C through 50 °C without derating. At 55 °C it still carries 192 A, and at 70 °C it carries 180 A — so in a warm enclosure you lose less than 10 % of the rating until you cross 55 °C. The ETU350M trip unit is the brains: it provides motor protection with phase-failure detection, plus an auxiliary switch and a separate trip-alarm switch (1 AUX + 1 HP) for status feedback to a PLC or annunciator panel. Rated insulation voltage Ui is 800 V, which covers 480 V and 600 V class systems with margin. The interrupting ratings span the common distribution voltages: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 52.5 kA at 690 V. That 242 kA at 415 V is the number most panel builders will check first — it confirms the breaker can clear a bolted fault on a 400 V class transformer secondary without the arc flash energy exceeding what the enclosure is rated for.
The breaker measures 105 mm wide, 181 mm high, and 86 mm deep — a standard SENTRON 3VA2 footprint that drops into a panel designed for the 3VA series without re-drilling the mounting plate. The auxiliary switch and trip-alarm switch are integrated (1 AUX + 1 HP), so you do not need a separate accessory block for status feedback. Maximum power loss is 75 W, which should be factored into the enclosure thermal calculation if the panel is densely populated.