The Siemens SENTRON 3VA2325-6HN32-0JH0 is a 3-pole molded case circuit breaker (MCCB) rated for 250 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. It is designed for line protection in distribution panels where the fault current can hit 242 kA at 240 V, 187 kA at 415 V, and still 121 kA at 500 V. That SCCR headroom means it can be placed at the main feeder without worrying about cascading failure into downstream gear.
The 242 kA interrupting rating at 240 V is the headline number, but the 187 kA at 415 V is the one that matters for 400 V-class installations: it safely clears faults up to that level without upstream coordination headaches. That gives remote tripping capability and status feedback without an add-on module. No undervoltage release is fitted — if UVR is needed, this order code doesn't carry it.
That covers unconditioned electrical rooms and outdoor enclosures in most climates.