Siemens 3VA1120-3ED46-0AA0 — MCCB for Line Protection
Breaking capacity reaches 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V, with 11.9 kA available at 500 V and 690 V. The front face is IP40 rated, suitable for enclosed panel mounting.
At 240 V the 75.6 kA breaking capacity gives substantial fault-current headroom for most North American 120/240 V split-phase or 240 V single-phase services. At 415 V (common in European 400 V systems) the 52.5 kA rating still covers high-fault utility connections. The 32 kA at 440 V and 11.9 kA at 500/690 V tell you this breaker is not sized for 690 V heavy industrial — at that voltage you need a higher-rated frame. For a 400 V panel with a prospective short-circuit current under 50 kA, this unit coordinates cleanly with upstream 63 A or 100 A SENTRON fuses or breakers.
Depth 70 mm, width 101.6 mm (4 in), height 130 mm (5.12 in). The 101.6 mm width is a standard 4-pole MCCB footprint — it occupies the same DIN-rail or mounting-plate slot as other 4-pole SENTRON 3VA breakers of similar rating. No special adapter needed for standard 35 mm DIN rail. Power loss is 12 W maximum, which is moderate for a 20 A 4-pole breaker; ventilation in the enclosure should handle that without forced airflow.