Siemens SENTRON 3VA1063-3ED36-0JC0 — 63 A MCCB for Line Protection
The Siemens 3VA1063-3ED36-0JC0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in distribution panels. It carries a continuous current rating of 63 A at 40 °C, with minimal thermal derating up to 70 °C (58 A at 70 °C), so the 63 A frame holds its rating across the typical panel ambient range without upsizing. This 3-pole breaker delivers interrupting ratings of 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — figures that cover most industrial LV fault levels. At 500 V and 690 V the interrupting capacity drops to 7.5 kA, which still handles downstream fault contributions on 480 V or 600 V class systems when the available fault current is known to be below that threshold. The breaker includes a shunt trip (STL) release and two HQ auxiliary switches for remote status or alarm feedback. Rated insulation voltage is 800 V, and maximum power loss is 17.3 W — a figure to factor into panel thermal calculations when the breaker is enclosed.
Panel Fit and Mounting
Mounts on a DIN rail or directly to a backplate via the 3-pole frame. Dimensions: 70 mm depth, 76.2 mm width, 130 mm height. The 76.2 mm (3 in) width is standard for a 3-pole MCCB in this class, so it drops into existing SENTRON or comparable panel cutouts without re-drilling.