Siemens SENTRON 3VA2163-0HM46-0AA0 — MCCB for high-fault panels
The Siemens SENTRON 3VA2163-0HM46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for continuous current of 63 A across the full ambient range up to 70 °C — no derating needed from 40 °C through 70 °C, which simplifies panel thermal budgeting. The ETU330 electronic trip unit with adjustable I-t characteristic gives selectivity coordination flexibility, and the N-conductor protection can be set to OFF or 100 % of phase rating, matching 4-wire system requirements.
The ETU330 trip unit supports adjustable I²t curves, so you can dial in short-time delay to achieve zone selectivity with downstream 63 A feeders.
The breaker measures 181 mm high, 140 mm wide, and 86 mm deep — a standard 4-pole MCCB footprint for Siemens 3VA frame sizes. The 4-pole design with adjustable N-conductor protection (OFF or 100 %) covers both 3-phase + N systems and pure 3-phase without neutral protection.