What this 250 A MCCB delivers
Breaking capacity reaches 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 6.3 kA at 690 V — the 690 V figure is the ceiling for this frame, so verify your system voltage against that curve.
Derating begins at 55 °C (241 A), dropping to 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C. Maximum power loss is 50.5 W — account for that heat in your enclosure sizing. Dimensions are 181 mm height, 105 mm width, 86 mm depth.
Auxiliary and undervoltage release
The integrated auxiliary trip order code is 3VA9608-0BB25; the basic switch assembly is 3VA2225-7HN32-0AA0. Mechanical endurance is rated at 20 000 operations — suitable for switching duty in distribution panels where the breaker sees regular manual or remote opening.