What this MCCB carries and where it fits
The Siemens SENTRON 3VA2225-5HL32-0BH0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C, with a maximum breaking capacity of 2 500 A and a minimum of 375 A. Its short-circuit current rating (SCCR) hits 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V — so it handles high-fault utility feeds and transformer secondaries without cascading upstream. This is a line-protection design (not motor-protection), meaning it's sized for feeder or main breaker duty in distribution panels. The undervoltage release (UVR) lets a safety PLC or E-stop string drop the breaker on loss of control voltage — common in machine safety circuits. Dimensions are 86 mm deep, 105 mm wide, 181 mm tall — fits standard SENTRON panel cutouts. The auxiliary switch block includes 2 auxiliary switches plus 1 trip alarm switch (HQ type), giving status feedback for remote monitoring or PLC inputs.
Thermal derating and real-world current
The 250 A rating holds flat from 40 °C to 50 °C. At 55 °C it derates to 241 A, at 60 °C to 232 A, at 65 °C to 222 A, and at 70 °C to 213 A. If your panel ambient runs hot (say, 55 °C inside a NEMA 12 enclosure), you lose 9 A — still enough for a 225 A feeder, but worth checking against your load.