What it is and what it does
The Siemens 3VA2325-6HL32-0AD0 is a SENTRON 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. Three poles, line protection design, no trip indicator, no undervoltage release, no ground-fault monitoring. Breaking capacity hits 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. That 242 kA figure at 240 V is the headline number for high-fault panels; the 690 V drop to 7.5 kA tells you this breaker is sized for low-voltage distribution, not 690 V motor circuits.
What the ratings mean for fit
The 250 A continuous rating is flat from 40 °C to 70 °C — no thermal derating curve to calculate for a warm panel. That simplifies panel design: if your load draws 250 A or less and the ambient stays under 70 °C, this breaker holds. The 242 kA interrupting rating at 240 V is the figure that governs SCCR compliance for a 240 V distribution panel; the 187 kA at 415 V covers most European 400 V grids. The 7.5 kA at 690 V is low — this is not a 690 V main breaker.
Panel integration and footprint
Mounts in a standard MCCB footprint: 248 mm high, 138 mm wide, 110 mm deep. Three auxiliary switches HQ are built in — no separate aux block to order. The supplied basic switch is order code 3VA2325-6HL32-0AA0, meaning the breaker ships with its internal switching mechanism pre-assembled. No communication function, no voltage trip, no ground-fault monitoring — this is a straight line-protection device, no frills.