The Siemens SENTRON 3VA2225-5HN42-0DA0 is a 4-pole molded case circuit breaker (MCCB) rated for 250 A continuous current at 40 °C, designed for line protection in distribution panels and switchgear assemblies.
The 250 A rating holds flat across 40 °C to 50 °C, then derates to 241 A at 55 °C and 213 A at 70 °C — so in a hot panel (say, next to a drive or transformer), the actual usable current drops. The interrupting capacity steps down as voltage rises: 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V. At 690 V the 4.5 kA figure is low enough that you need to verify the available fault current at that voltage before committing the BOM line.
The breaker measures 140 mm wide, 181 mm tall, and 86 mm deep — a standard SENTRON 3VA frame size that fits the usual DIN-rail or screw-mount patterns in a distribution panel.