SENTRON 3VA1112-4EF32-0BC0 — 125 A MCCB for Line Protection
Its interrupting capacity hits 121 kA at 240 V AC and 75.6 kA at 415 V AC — numbers that matter when you're coordinating downstream fault levels in a distribution panel. The power loss at full load runs 30.6 W, so factor that into your enclosure thermal budget if you're packing several in a row.
At 415 V it still holds 75.6 kA, and at 500 V it drops to 11.9 kA, which is the same figure at 690 V. That plateau tells you the arc extinction limit is reached above 500 V; for 690 V systems, you're coordination-limited to 11.9 kA available fault current. At 55 °C it drops to 122 A, at 60 °C to 120 A, and at 70 °C to 114 A.
Width at 76.2 mm means three of these sit in a 230 mm wide section, leaving space for side cable entries. The 3VA1112-4EF32-0BC0 includes an undervoltage release and two auxiliary switches, so the depth stays within the same 70 mm envelope — no extra protrusion for the UVR module.