Its headline continuous current is 630 A at 40 °C ambient, which is the figure you use for feeder sizing — above that temperature the current derates in 30 A steps down to 450 A at 70 °C (–), so a panel running warm needs the thermal curve applied before committing the BOM line. Breaking capacity is 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 17 kA at 690 V. For a 400 V distribution board, the 121 kA figure covers most high-fault scenarios.
Panel integration and dimensions
The 3VA2 frame measures 110 mm deep, 138 mm wide, and 248 mm tall. That 138 mm width for a 3-pole 630 A MCCB is compact for the rating — it fits standard panel cutouts and leaves room for cable entry.
Auxiliary functions and compliance
Undervoltage release (UVR) is fitted. Ground fault monitoring uses summation current formation on the L-conductor. Latching endurance is 15,000 operations. Siemens provides RoHS, REACH, UL, and IEC compliance documentation for the SENTRON series.