What this MCCB delivers
The Siemens SENTRON 3VA2225-7HN32-0CC0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C — the same rating holds at 45 °C and 50 °C, so you get full ampacity through typical panel ambient conditions without derating until you cross 55 °C, where it steps to 241 A. Breaking capacity hits 330 kA at 240 V, 242 kA at 415/440 V, and 187 kA at 500 V — numbers that put this squarely in the high-fault category for large distribution or industrial feeder applications where available fault current is serious. At 690 V the rating drops to 4.5 kA, which is typical for a 250 A frame — the arc energy at that voltage limits the interrupt rating, so verify your system voltage against that curve before specifying.
Panel fit and integration
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint that fits most distribution panelboards without re-drilling the mounting plate. The breaker ships with an undervoltage release (UVR) and two auxiliary switches (HQ type) factory-installed, which saves panel-build time versus adding them in the field.
Lifecycle and sourcing
Maximum power loss is 50.5 W, so factor that into your enclosure thermal budget if you are stacking several breakers in a sealed panel.