63 A MCCB with shunt trip — line protection for distribution panels
Its short-circuit breaking capacity reaches 121 kA at 240 V and 75.6 kA at 415 V — sufficient for high-fault installations like industrial switchboards or transformer secondaries where fault currents exceed 50 kA.
Breaking capacity by voltage — selectivity planning
At 240 V the 3VA1063-4ED32-0JA0 interrupts 121 kA; at 415 V it handles 75.6 kA; at 440 V it drops to 52.5 kA; and at 500 V and 690 V it is rated 11.9 kA. For 690 V applications the 11.9 kA limit restricts it to low-fault sub-distribution.
Rated current holds at 63 A from 40 °C through 50 °C, then derates to 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. Maximum power loss is 17.3 W. In a sealed or high-ambient panel, account for the 5 A drop between 50 °C and 70 °C when sizing the feeder.
The 3-pole footprint matches standard SENTRON MCCB cutouts; no rewiring is needed when replacing a same-frame 3VA1 series unit.