SENTRON 3VA1225-5EF42-0BC0 — 250 A MCCB with Undervoltage Release
Its interrupting capacity reaches 187 kA at 240 V AC, tapering to 121 kA at 415 V and 75.6 kA at 440 V — figures that govern the available fault current the breaker can safely clear without upstream coordination failure.
The 250 A rating holds flat from 40 °C through 50 °C, then derates to 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C.
Breaking Capacity by Voltage Level
At 415 V the breaker still clears 121 kA; at 500 V it drops to 30 kA, and at 690 V to 17 kA.
The breaker measures 158 mm high, 140 mm wide, and 70 mm deep — a 4-pole frame that occupies roughly the same footprint as earlier SENTRON 3VA1 generations, so a panel laid out for a 3VA1110 or 3VA1112 will accept this unit without drilling new mounting holes or reworking the bus bars.