What this MCCB carries and where it fits
The Siemens SENTRON 3VA2325-6HN32-0AJ0 is a 3-pole molded case circuit breaker rated 250 A continuous with a 3000 A frame — that frame size tells you the internal mechanism and contact structure are built for the full 3000 A interrupting duty, even though the continuous trip is set at 250 A. This matters for selectivity: you get the mechanical endurance and arc-chamber volume of a 3000 A frame while protecting a 250 A feeder. Interrupting capacity is where this part earns its place in a high-fault panel: 242 kA at 240 V, 187 kA at 415/440 V, 121 kA at 500 V, and 7.5 kA at 690 V. At 415 V — common for industrial distribution in IEC markets — 187 kA SCCR means it sits comfortably ahead of most transformer secondaries and motor control centers without needing a current-limiting fuse upstream. The continuous rating holds flat from 40 °C through 70 °C ambient — no derating curve to chase on a hot panel day. Maximum power loss is 37.5 W, which keeps the enclosure heat rise predictable for the guy laying out the gland plate and ventilation.
Integration and footprint
At 110 mm deep, 138 mm wide, and 248 mm tall, this MCCB fits the standard SENTRON 3VA2 panel footprint. The 138 mm width per 3-pole unit matches the typical DIN-rail or mounting-plate pitch in a distribution board — no surprises when you're laying out busbars or phase barriers. The auxiliary switch configuration is 2 auxiliary switches plus 1 trip alarm switch (HP type). That gives you two independent NO/NC signal paths for status feedback to a PLC or remote I/O, plus a dedicated alarm contact that changes state only on a trip — useful for differentiating a manual open from a fault event without extra logic. No undervoltage release, no ground-fault monitoring module, and no communication function on this variant. It is a straight line-protection breaker — the basic switch is order code 3VA2325-6HN32-0AA0. If you need those options, you step to a different suffix in the 3VA2 family.