The Siemens SENTRON 3VA2325-5HN32-0HA0 is a 3-pole molded case circuit breaker rated for 250 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed as the panel warms up. It's a line-protection device (not a motor-protective breaker), so it's sized for feeder or main distribution duty where the load is a busbar or a group of downstream branch circuits. Breaking capacity runs 187 kA at 240 V, dropping to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V, and 7.5 kA at 690 V. The shunt trip release (STL) is built in — that's the auxiliary release on this variant, letting a remote pushbutton or a safety relay trip the breaker without a manual handle pull. This is a straightforward main breaker with remote-trip capability, nothing more.
Footprint is 138 mm wide by 248 mm tall by 110 mm deep — standard 3-pole MCCB envelope for this frame size. The 110 mm depth matters when you're laying out a shallow backpanel enclosure; check that the door clearance and busbar stabs leave room for the shunt trip wiring at the front. If your maintenance team relies on a red-flag indicator for quick troubleshooting, factor that into the panel labeling or add a remote status contact externally.