What this MCCB is and what it does
The Siemens 3VA2325-6HL32-0BC0 is a SENTRON molded case circuit breaker (MCCB) sized for 250 A continuous current at 40 °C, with an ETU320 electronic overcurrent release and undervoltage release (UVR) built in. Rated insulation voltage is 800 V. Three-pole, line-protection version — meaning it's the primary feeder breaker for a distribution panel, motor control center, or heavy industrial load center, not a downstream branch device.
What the interrupting ratings mean for fit
This breaker delivers 242 kA interrupting capacity at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 40 kA at 690 V. Those numbers tell you it's built for high-fault locations — think transformer secondaries, large motor feeders on 480 V systems, or industrial mains where the available fault current is well above what a standard 65 kA or 100 kA MCCB can handle. If your service entrance or sub-feed has a calculated short-circuit duty of, say, 150 kA at 480 V, this breaker covers it.
Thermal derating and panel integration
The 250 A rating holds flat from 40 °C to 50 °C, then steps down: 240 A at 55 °C, 235 A at 60 °C, 230 A at 65 °C, 225 A at 70 °C. If your panel ambient runs above 50 °C — say a non-ventilated enclosure or a switchroom next to a furnace line — you need to account for that derating. Dimensions are 248 mm high, 138 mm wide, 110 mm deep; it's a standard SENTRON 3VA2 footprint, so it's on the van for a DIN-rail or screw-mount retrofit into a Siemens panelboard or a generic enclosure. Mechanical endurance rated at 15 000 operations.