What this 630 A SENTRON MCCB covers
Its interrupting capacity reaches 440 kA at 240 V AC, 242 kA at 415 V and 440 V, 154 kA at 500 V, and 17 kA at 690 V — these are the fault-clearing numbers that govern selectivity coordination in a distribution panel. The TM220 release has a fixed short-circuit pickup (Ii) of 5,040 A, meaning it responds instantaneously above that threshold; the thermal element handles overloads on a time curve. This is the breaker you specify for a main feeder or a large branch where you need high fault interruption and thermal-magnetic simplicity — no ground-fault module, no communication function, just a solid 630 A frame.
Above that, the breaker derates linearly: 618 A at 55 °C, 607 A at 60 °C, 595 A at 65 °C, and 583 A at 70 °C. Maximum power loss is 192.9 W, which drives ventilation or cabinet sizing.
Panel fit and physical integration
That 110 mm depth (4.33 in) is the projection behind the panel face — verify your enclosure depth clearance, especially if you're retrofitting into an existing board. The SENTRON 3VA family shares a consistent footprint across the 630 A frame size, so a panel cutout for a 3VA1 breaker should accept this unit without modification. Optional motor drive is listed as available, which matters if you need remote tripping or re-closing.