What this MCCB delivers on the line
The Siemens SENTRON 3VA2325-6HN32-0KL0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C, with no derating needed up to 70 °C — it holds the full 250 A across the operating temperature range. Interrupting capacity is 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 7.5 kA at 690 V — so it handles high available fault current on the secondary side of a distribution transformer without needing a current-limiting fuse upstream. It is designed for line protection (feeder duty) in switchboards and panelboards, with a shunt trip release (STL) and a complement of two auxiliary switches plus one trip alarm and one electrical alarm switch — useful for remote status and trip indication back to a PLC or SCADA.
Dimensions and panel fit
The breaker measures 248 mm high, 138 mm wide, and 110 mm deep — a standard 3-pole MCCB footprint that fits SENTRON distribution panels and most common switchboard cubicle layouts. Power dissipation at rated current is 37.5 W maximum — factor that into enclosure thermal calculations if the panel is tightly packed.