What this MCCB carries — and what that means for your panel
The Siemens SENTRON 3VA2225-5KP32-0JA0 is a 3-pole molded case circuit breaker rated 250 A continuous at 40 °C, with a maximum breaking capacity of 187 kA at 240 V and 121 kA at 415 V. That 187 kA figure at 240 V means it can safely interrupt a fault current up to that level without upstream devices needing to clear — useful for high-fault service entrances or transformer secondaries where the available short-circuit current is substantial. At 690 V the rating drops to 4.5 kA, so this breaker is sized for the 240–500 V range where the interrupting duty is highest. The continuous current holds at 250 A 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. If your panel ambient runs above 50 °C, the real ampacity is the derated value — plan the load accordingly. The breaker is designed for line protection, with a built-in shunt trip release and a communication function for remote monitoring or trip signalling. Dimensions: 181 mm high, 105 mm wide, 86 mm deep. That 105 mm width is the standard 3-pole MCCB footprint for this SENTRON frame — it will drop into a panel designed for a 3VA2-series breaker without re-drilling the mounting holes. The 86 mm depth leaves clearance for rear-connected busbars or cable lugs.
Compliance and documentation — what ships with the breaker
Siemens SENTRON MCCB ships with RoHS and REACH declarations and IEC/UL compliance documentation for the product class.