63 A SENTRON MCCB with undervoltage release
The Siemens 3VA1063-4ED36-0CA0 is a SENTRON molded case circuit breaker rated for continuous current of 63 A at 40 °C, with no derating needed up to 50 °C — it holds the full 63 A at 50 °C, then tapers to 58 A at 70 °C. That's a solid thermal curve for a warm panel. Three-pole construction with a TM210 thermal-magnetic trip unit. The interrupting capacity hits 121 kA at 240 V, 75.6 kA at 415 V, and still clears 11.9 kA at 690 V — that's high-fault headroom for a 63 A frame.
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that mounts directly to a backplate or DIN rail adapter. The UVR coil terminals are accessible on the front face; verify polarity and control voltage before energizing.