What the ratings mean for your panel
The Siemens 3VA2325-8HN32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 250 A continuous current at 40 °C through 70 °C — no derating across that span, which simplifies panel design in warm enclosures. The 3-pole configuration and ETU350 electronic trip unit make it a line-protection device, not a motor-protection or ground-fault variant. Breaking capacity runs 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V — figures that cover most industrial service-entrance and distribution applications. The ETU350 provides adjustable long-time, short-time, and instantaneous pickup settings, plus a ground-fault alarm function (though not a trip version). The front face carries IP40 protection, adequate for enclosed panel mounting; no IP rating on the body means it is not intended for washdown or outdoor exposure.
Panel fit and integration
Dimensions: 248 mm high, 138 mm wide, 110 mm deep. The 138 mm width is standard for a 3-pole MCCB in this frame size, so it fits existing SENTRON 3VA cutouts. Panel builders should account for the 37.5 W maximum power loss at rated current when sizing enclosure ventilation. No undervoltage release or shunt trip is fitted; the motor-drive option is available as an accessory (Product Extension / Optional / Motor Drive: Yes).