MCCB for motor protection — 200 A, 3-pole, with undervoltage release
The Siemens SENTRON 3VA2220-7MN32-0DL0 is a molded case circuit breaker (MCCB) designed specifically for motor protection, rated 200 A continuous across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Three poles, with phase failure detection built in, and an undervoltage release (UVR) integrated as the auxiliary release. The interrupting capacity hits 330 kA at 240 V, dropping to 5.2 kA at 690 V; that 330 kA figure at 240 V tells you this breaker is sized for high-fault industrial distribution where upstream transformer capacity is substantial.
The 200 A rating at 70 °C is the headline — many MCCBs derate above 40 °C, but this one holds flat to 70 °C, which matters in a sealed, high-ambient panel or a motor control center (MCC) row where heat builds. The 330 kA at 240 V is the short-circuit current rating (SCCR) at that voltage level; it means the breaker can safely interrupt a fault up to 330 kA without rupturing, so it coordinates with high-capacity transformers or busway feeds. At 690 V the SCCR drops to 5.2 kA — still adequate for most 690 V motor circuits, but verify against the available fault current at that voltage. The 3-pole design with phase failure detection protects against single-phasing on a three-phase motor load, which is the most common cause of motor burnout in industrial lines.
Integration notes — panel and wiring
Dimensions: 105 mm wide, 181 mm high, 86 mm deep. That 105 mm width is a standard 4.13-inch footprint for a 3-pole MCCB in this class — fits a typical panel-mounted or DIN-rail adapter base. The 86 mm depth (3.39 in) is shallow enough for most 200 mm deep enclosures. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.