What this MCCB is and why it matters
The Siemens SENTRON 3VA2220-5MN32-0KC0 is a 3-pole molded case circuit breaker (MCCB) rated 200 A continuously from 40 °C up to 70 °C — no derating needed across that thermal band, which simplifies panel layout in warm enclosures. It is designed specifically for motor protection, with integrated phase failure detection and a shunt trip release (STL) for remote emergency-off or undervoltage tripping. The interrupting capacity hits 187 kA at 240 V AC, 121 kA at 415/440 V, and 75.6 kA at 500 V — numbers that give selectivity headroom in high-fault distribution panels.
Panel fit and integration
Dimensions are 105 mm wide, 181 mm high, and 86 mm deep — standard 3-pole MCCB footprint that fits most DIN-rail or backplate-mounted enclosures. The design incorporates two auxiliary switches (HQ) for status feedback to a PLC or indication panel, plus the shunt trip for remote tripping. Maximum power loss is 46 W, so factor that into thermal calculations for sealed enclosures.