The Siemens 3VA2325-5JQ32-0BA0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) for line protection, rated at 250 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Three poles, with an ETU560 electronic trip unit that gives you adjustable long-time (tr 0.5–25 s) and short-time (tsd max 0.5 s) response values. The interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V, and still holds 55 kA at 440 V, so it handles high-fault utility feeds or transformer secondaries without cascading upstream.
Sizing and selectivity for the panel
The 250 A frame with the ETU560 release lets you set long-time pickup and delay to coordinate with downstream branch breakers — the adjustable tr (0.5–25 s) and tsd (0.5 s max) give you real selectivity headroom against a 100 A feeder breaker.
Panel footprint: 138 mm wide, 248 mm tall, 110 mm deep. The communication function means it can talk to a higher-level system via the ETU's optional comm module, though the base unit ships without one.