What this MCCB is and where it fits
The Siemens SENTRON 3VA2220-7MS32-0KA0 is a 3-pole molded case circuit breaker (MCCB) rated for 200 A continuous current (Iu) and carrying an interrupting capacity of 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 — figures that tell you this breaker is built for high-fault-current main or feeder duty in industrial switchboards, not branch protection. The 200 A rating holds flat from 40 °C through 50 °C, then derates to 192 A at 55 °C, 188 A at 60 °C, 184 A at 65 °C, and 180 A at 70 °C — so if your panel ambient runs at 55 °C, you lose 8 A of headroom; plan the load accordingly. It is designated as a starter protection version, meaning the electronic trip unit (ETU310M) is configured for motor-starting profiles — it handles the inrush without nuisance tripping while still providing short-circuit and overload protection for the motor branch.
Trip unit and auxiliary releases
The ETU310M electronic trip unit gives you adjustable overload and short-circuit settings; it is the workhorse trip for motor and general distribution applications. A shunt trip (STL) release is built in for remote tripping — useful for emergency-stop circuits or interlocking with a safety PLC. There is no undervoltage release, no auxiliary contact block, no ground-fault monitoring, no communication module, and no phase-failure detection on this variant. If you need those, you are looking at a different order code in the 3VA2 family. The integrated auxiliary trip is specified as 3VA9688-0BL33, and the supplied basic switch is 3VA2220-7MS32-0AA0 — these are internal sub-assemblies, not field-replaceable by the end user, but useful to know for spares planning if you are an OEM support desk.
Lifecycle and sourcing reality
Sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — typical for a 200 A MCCB that moves through multiple channels.
Mechanical fit and panel integration
Dimensions: 181 mm high, 105 mm wide, 86 mm deep. That 105 mm width is the 3-pole frame width — it determines the DIN-rail or mounting-plate footprint. If you are swapping an older 200 A MCCB, measure your existing cutout against these numbers before ordering. Rated insulation voltage Ui is 800 V, so it is suitable for 480 V and 600 V class systems with margin. Maximum power loss is 75 W — account for that heat in your enclosure ventilation calculation, especially if the panel is densely packed. Operating temperature range is -25 °C to +70 °C; storage range is -40 °C to +80 °C. The 20 000-cycle mechanical endurance is typical for a 200 A frame — fine for distribution switching, but if you are cycling it daily as a disconnect, consider a dedicated switch.