The Siemens SENTRON 3VA2225-5JQ42-0DJ0 is a 4-pole molded case circuit breaker (MCCB) rated for 250 A continuous at 40 °C, with a minimum trip setting of 1.5 A. The 121 kA at 415 V and 75.6 kA at 500 V still cover most industrial service-entrance and feeder applications. At 690 V the rating drops to 4.5 kA, so it's not a 690 V main breaker; keep it on the 400 V class bus.
Thermal derating and auxiliary configuration
The breaker holds 250 A flat from 40 °C up to 50 °C, then derates to 238 A at 55 °C, 225 A at 60 °C, 213 A at 65 °C, and 200 A at 70 °C. The basic switch module is order code 3VA2225-5JQ42-0AA0 if you need a replacement core.