That 630 A figure is the thermal backbone — at 70 °C it still carries 520 A, so it holds up in a hot cement plant or enclosed switchgear without derating off a cliff. Breaking capacity runs 187 kA at 240 V, 121 kA at 415 V, and still 17 kA at 690 V. The 690 V rating at 17 kA covers most 600 V class motor control centers. The 110 mm depth, 138 mm width, and 248 mm height fit the standard SENTRON 3VA fixed-panel footprint. It bolts into a panel bus, not a DIN rail — this is a lugged breaker for bolted connections in a switchboard or MCC bucket.
Built for the heat and the grit
That 70 °C ceiling means it survives a closed MCC in a cement plant or steel mill where ambient can hit 55 °C inside the enclosure. The ETU320 release is the electronic trip — no thermal bimetal creep, consistent trip curves across temperature.
The breaker ships as a complete unit.