63 A MCCB with ETU320 — interrupting capacity and thermal derating
The interrupting capacity reaches 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 3.4 kA at 690 V — figures that govern selectivity coordination in high-fault panels. Thermal derating is specified per the datasheet: the breaker holds 63 A from 40 °C through 50 °C ambient, then steps down to 60.6375 A at 55 °C, 58.275 A at 60 °C, 55.9125 A at 65 °C, and 53.55 A at 70 °C. Maximum power loss is 7.9 W.
Undervoltage release and auxiliary contacts
The integrated auxiliary trip is order code 3VA9608-0BB11. There is no voltage trigger, no trip indicator, and no ground-fault monitoring.
Panel integration — dimensions and mounting
The 3-pole footprint is standard for SENTRON 3VA frames, so a panel cutout or busbar layout designed for a 3VA2063 will accept this unit without rewiring.