Breaking capacity reaches 242 kA at 240 VAC, 187 kA at 415 V and 440 VAC, 121 kA at 500 VAC, and 40 kA at 690 VAC — these are the fault-clearing figures that govern its application in high-fault industrial distribution.
At 110 mm deep, 138 mm wide, and 248 mm tall, this MCCB occupies a standard SENTRON 3VA2 footprint. Above 55 °C, the rating derates linearly from 240 A at 55 °C down to 225 A at 70 °C — so if the breaker lives in a hot enclosure, the effective ampacity is lower than the nameplate 250 A. Maximum power loss is 37.5 W, which factors into enclosure thermal calculations.
Deployment context
As a SENTRON 3VA2 MCCB, it's designed for panel-mount installation in industrial switchboards and distribution boards, protecting feeder circuits and downstream equipment against overloads and short circuits.