What this MCCB delivers — and where the ratings matter
The 3VA2063-7HN42-0AA0: Four poles with an ETU350 electronic trip unit give you adjustable long-time pickup and delay (tr min 0.5 s to tr max 17 s), plus N-conductor protection that can be set to OFF or 100 % of phase rating — useful for 3-phase + N distribution where the neutral needs its own overcurrent element. Breaking capacity is the headline: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3 kA at 690 V. At 415 V that is well above typical utility fault levels in most industrial installations, so you can use this MCCB as the main incoming device without worrying about cascading failure upstream. Rated insulation voltage Ui is 800 V, which covers 690 V systems with margin; the front face carries IP40 protection, meaning it is sealed against tools and small wires but not washdown — mount it inside a panel, not on the machine exterior.
Physical fit — dimensions and panel integration
The 3VA2063-7HN42-0AA0 measures 181 mm high, 140 mm wide, and 86 mm deep (7.1 × 5.5 × 3.4 inches). It is a standard SENTRON 3VA frame size — mounts on a DIN rail or directly to a backplate via the screw terminals. No communication module built in (Communication Function: No, Other Measurement Function: No), so this is a straight electromechanical breaker with the ETU350 handling the protection curve. If you need remote trip indication or power monitoring, you step up to the 3VA2 series with the COM module.
Selectivity and coordination notes
Latching endurance is 20,000 operations. The ETU350 is field-adjustable for long-time and short-time pickup. Power loss is 5.4 W maximum at rated current — negligible for thermal budgeting in a crowded panel, but worth noting if you are stacking multiple breakers in a sealed enclosure.