The Siemens SENTRON 3VA1063-3ED36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated 63 A at 40 °C, fitted with a TM210 thermal-magnetic overcurrent release and designed for line protection in distribution panels. Its interrupting capacity reaches 75.6 kA at 240 V and 52.5 kA at 415 V, with a derated curve down to 7.5 kA at 690 V — covering most industrial low-voltage fault levels without requiring an upstream current-limiting fuse.
Current derating and thermal management
The 63 A rating holds flat from 40 °C to 50 °C, then steps down to 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. In a sealed, uncooled enclosure — common in automotive Tier-1 panel builds — the 55 °C derate to 62 A is the practical limit for a continuous 60 A load. The maximum power loss is 17.3 W, which factors into the enclosure thermal rise calculation.
Mounting and panel fit
The breaker occupies 70 mm depth, 76.2 mm width (3 in), and 130 mm height (5.12 in). Three-pole construction with a screw-clamp termination pattern standard for SENTRON 3VA frames. The front face carries IP40 protection — suitable for dry indoor panel environments; not rated for washdown or outdoor installation without an additional enclosure.