Siemens 3VA2225-5HN32-0CC0 — 250 A SENTRON MCCB with ETU350 Trip Unit
The Siemens 3VA2225-5HN32-0CC0 is a SENTRON molded case circuit breaker rated for 250 A continuous current (Iu) across a 40–50 °C ambient range, with a 3-pole configuration and an ETU350 electronic trip unit. Breaking capacity runs 187 kA at 240 V, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 5.1 kA at 690 V — figures that cover most industrial service-entrance and sub-distribution applications where high fault current is expected.
Trip Unit and Auxiliary Hardware
Maximum power loss is 50.5 W, which matters for enclosure thermal management when multiple breakers are ganged. Mechanical endurance is rated at 20,000 operations — typical for a fixed-mounted MCCB in a distribution board.
The breaker measures 105 mm wide × 181 mm high × 86 mm deep — standard SENTRON 3VA2 footprint for 250 A frame size, so it drops into existing panel cutouts and busbar arrangements without modification.