What this MCCB is and what it does
The Siemens 3VA2325-6HL32-0DH0 is a SENTRON molded case circuit breaker (MCCB) sized for 250 A continuous current on a 3-pole line-protection circuit. It's the breaker you spec when you need a 250 A frame that holds its full rating from 40 °C all the way up to 70 °C — no derating in a warm panel, which simplifies coordination. The interrupting capacity runs 242 kA at 240 V, drops to 187 kA at 415 V and 440 V, then 121 kA at 500 V, and 7.5 kA at 690 V — so the high fault-current headroom is at the lower voltages common in North American distribution, while the 690 V figure keeps it usable on 600 V class systems with moderate fault levels. It ships with an undervoltage release (UVR) built in, plus two auxiliary switches and one trip alarm switch (HQ configuration) — that's the full complement most panels need for status feedback and safety drop-out without adding external relay logic. The basic switch core is order code 3VA2325-6HL32-0AA0, so if you're swapping just the trip unit, that's the reference.
Physical fit and panel integration
The breaker measures 138 mm wide, 248 mm tall, and 110 mm deep — that's about 5.43 by 9.76 by 4.33 inches. It's a standard 3-pole MCCB footprint for a 250 A frame, so it drops into most panel-mounted or enclosure-mounted bus arrangements without re-drilling. The 110 mm depth means it clears typical 200 mm deep enclosures with room for wiring gutters.
Thermal and electrical limits
Max power loss is 40 W at rated load — that's the heat you need to vent in a sealed enclosure. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C. The trip indicator is present, and there's no voltage-trigger or communication function on this variant — it's a straight line-protection breaker with undervoltage release.