Siemens SENTRON 3VA1050-3ED46-0AA0 — 50 A MCCB, 4-Pole, Line Protection
The Siemens 3VA1050-3ED46-0AA0 is a 4-pole molded case circuit breaker from the SENTRON family, rated for 50 A continuous current and designed for line protection in distribution panels. Its interrupting capacity reaches 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 500 V and 690 V — covering fault-clearing across common low-voltage distribution voltages. The TM210 overcurrent release provides thermal-magnetic protection, meaning the breaker handles moderate overloads thermally and short circuits magnetically, with no electronic trip unit or communication function onboard.
Integration & Mounting
The breaker measures 70 mm deep, 101.6 mm wide, and 130 mm high — a 4-pole footprint that fits standard panel-mount cutouts for SENTRON MCCBs. Rated insulation voltage of 800 V and power loss of 14.6 W maximum under full load; thermal derating starts above 55 °C, dropping from 50 A to 45 A at 70 °C ambient. Operating ambient range from -25 °C to 70 °C; storage range from -40 °C to 80 °C — suitable for unconditioned enclosures in most industrial environments.