What this MCCB carries and where it fits
The Siemens SENTRON 3VA1050-2ED42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated 50 A continuous, designed for line protection in distribution panels. The TM210 thermal-magnetic release handles overload and short-circuit protection without electronic adjustment — a fixed-trip unit that is set at the factory and not field-adjustable. Interrupting capacity is 52.5 kA at 240 V, dropping to 32 kA at 415 V and 13.6 kA at 440 V, so the available fault current at the panel location decides whether this breaker clears a bolted fault without upstream coordination issues. The 4-pole version is common on three-phase-plus-neutral systems where the neutral is switched, or on three-phase delta feeds where the fourth pole provides additional isolation.
Thermal performance and panel integration
Rated 50 A at 40 °C ambient, and it holds that rating up to 50 °C. Above that, derating starts: 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. If the panel ambient runs hot — say a packed enclosure near a furnace line — the continuous current capability drops by 10% at the top end. The breaker dissipates 14.6 W maximum at rated load, which matters for internal enclosure temperature rise calculations. Operating range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Front face carries IP40 protection — fine for a dry indoor panel, not for washdown environments. Dimensions: 130 mm height, 101.6 mm width, 70 mm depth. That 70 mm depth is shallow enough to fit most standard distribution boards without a deep enclosure.
What it does not include
No undervoltage release, no shunt trip, no communication module, no ground-fault monitoring, and no trip indicator. The TM210 release is a basic thermal-magnetic unit — no electronic adjustment, no zone-selective interlocking. If the application requires remote tripping or ground-fault protection, this base variant is not the right pick; a 3VA with the appropriate accessory or electronic release would be needed.