What this 3VA2220-7MS32-0HC0 is and what it does
The Siemens SENTRON 3VA2220-7MS32-0HC0 is a 3-pole molded case circuit breaker (MCCB) with a starter protection design, meaning it is built to handle motor-starting inrush without nuisance tripping while still providing short-circuit and overload protection for the branch circuit. Its adjustable thermal-magnetic trip unit covers a 600 A to 3 000 A range, so you set the continuous current to match the motor full-load amps. The interrupting ratings climb to 330 kA at 240 V and 242 kA at 415 V, giving you the fault-clearing capacity for high-available-fault panels. A factory-fitted shunt trip release (STL) and two HQ auxiliary switches are included, so remote trip and status feedback are wired in from the start.
Thermal derating and ambient temperature
The breaker carries a full 200 A continuously from 40 °C all the way up to 70 °C — no derating step-down across that band. That flat curve simplifies panel thermal budgeting: the 200 A rating holds even in a warm enclosure. Maximum power loss is 46 W at rated load, which feeds into your enclosure heat-rise calculation. Operating range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.
Interrupting capacity by voltage level
The SCCR varies with system voltage: 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. At the common 400/415 V distribution level, the 242 kA figure gives you headroom for high-fault panels without cascading upstream breakers. The 690 V rating drops to 5.2 kA, so confirm your available fault current if using this breaker on a 690 V system.
Panel fit and dimensions
The breaker measures 105 mm wide by 181 mm high by 86 mm deep. That 105 mm width for a 3-pole MCCB at this rating is standard for the SENTRON 3VA platform, so it fits existing panel layouts and busbar systems designed for that footprint. The depth of 86 mm leaves room for rear-connected busbars or cable lugs in a typical distribution enclosure.