What this MCCB is and what the ratings mean for fit
The Siemens SENTRON 3VA2220-7MS32-0HL0 is a 3-pole molded case circuit breaker (MCCB) in the starter protection product version, meaning it's designed for motor branch-circuit protection where the breaker coordinates with a contactor and overload relay rather than serving as a standalone feeder breaker. Its rated continuous current Iu is 200 A, and it holds that rating flat from 40 °C through 50 °C before derating 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 above 50 °C, the 200 A nameplate doesn't apply and you need to size up or derate the load. The interrupting ratings are tiered by system voltage: 330 kA at 240 V, 242 kA at both 415 V and 440 V, 187 kA at 500 V, and 52.5 kA at 690 V. That 330 kA at 240 V is exceptionally high — this breaker can sit on a transformer secondary with very high available fault current without needing a current-limiting fuse upstream. At 690 V the 52.5 kA rating still covers most industrial motor-control centers. The rated insulation voltage Ui is 800 V, so the breaker's internal clearances and creepage are sized for 690 V systems with margin. The electronic trip unit is an ETU310M — that's the 'M' for motor protection, giving adjustable thermal memory and magnetic pickup curves tailored to motor inrush rather than generic distribution. The breaker carries a shunt trip release (STL) for remote opening, plus a 2+1+1 auxiliary contact configuration: two auxiliary switches, one trip alarm switch, and one electrical alarm switch. No undervoltage release, no ground-fault monitoring, no communication module, and no phase-failure detection are built in — those are add-on options if needed.
Lifecycle and sourcing reality
For a BOM freeze or a panel that was specified around a different MCCB, the 3VA2220-7MS32-0HL0 is a current-design SENTRON 3VA2 frame breaker. It's sourced and quoted to order against an RFQ through independent distribution — availability and current pricing are confirmed at quote time, not on a listing page. The mechanical endurance is rated at 20,000 operations, which is typical for a 200 A MCCB in motor-starting duty where it sees frequent switching, not just fault protection.
Physical fit and panel integration
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep. The 105 mm width is the standard 3-pole MCCB footprint for the SENTRON 3VA2 frame — it occupies three 35 mm DIN-rail modules worth of panel width, though the breaker itself bolts to a mounting plate rather than snapping onto a DIN rail. The 86 mm depth includes the rotary handle projection; panel depth clearance needs to account for that plus wiring space behind the breaker. The maximum power loss is 75 W at full rated current, so ventilation around the breaker in a sealed enclosure matters — stacking multiple 200 A breakers without airflow can push internal ambient past the 50 °C flat-rating ceiling. Operating temperature range is -25 °C to +70 °C; storage range is -40 °C to +80 °C.