What this MCCB carries
The Siemens SENTRON 3VA1063-3ED32-0AA0 is a 3-pole molded case circuit breaker rated 63 A at 40 °C, with a TM210 thermal-magnetic release for line protection. Interrupting capacity hits 75.6 kA at 240 V, stepping down to 52.5 kA at 415 V and 32 kA at 440 V — enough headroom for most distribution panels feeding motor control centers or lighting subboards. The TM210 release means the thermal pickup is fixed at 1.0× the frame rating, magnetic trip at 10× In — a standard curve for general distribution, not for motor-starting duty. No undervoltage release, no ground-fault monitoring, no communication module; this is a straight line-protection breaker for the panel builder who needs a clean, non-communicating MCCB.
Sizing and thermal derating
Rated 63 A from 40 °C through 50 °C, then derates: 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, 58 A at 70 °C. If the panel ambient runs at 65 °C, the breaker is good for 60 A continuous — plan your load schedule accordingly. Power loss maxes at 17.3 W, which matters for enclosure heat rise calculations in a packed cabinet. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C. The IP40 front face keeps dust out of the enclosure cutout — fine for a clean indoor panel, not for washdown areas.
Panel fit and footprint
Dimensions: 130 mm height, 76.2 mm width, 70 mm depth. That 70 mm depth (2.76 in) is shallow enough for a 200 mm deep enclosure with room for wiring gutters. Width at 76.2 mm (3 in) is standard for a 3-pole MCCB in this frame size — drops into the same cutout as other SENTRON 3VA breakers. No trip indicator, no voltage trigger — the front face stays clean.