63 A MCCB with TM210 release — what the ratings mean for your panel
The Siemens SENTRON 3VA1063-2ED36-0JA0 is a 3-pole molded case circuit breaker rated for 63 A continuous current at 40 °C, with the TM210 thermal-magnetic release handling overload and short-circuit protection. That 63 A holds steady up to 50 °C; above that it derates to 60.48 A at 55 °C and 56.7 A at 70 °C — so if your panel ambient runs hot, you lose about 10% headroom at the top end. Breaking capacity runs 52.5 kA at 240 V, drops to 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at 690 V. That 52.5 kA at 240 V gives you serious fault-clearing headroom on a 480Y/277 V secondary or a 240 V delta service — the SCCR on the line side can ride higher than most panelboards are rated for. This version ships with a shunt trip (STL) auxiliary release (order code 3VA9688-0BL32 for the integrated trip unit) and no undervoltage release, no auxiliary contacts, no communication module, and no ground-fault monitoring. It's a straight line-protection breaker — no bells, no bus taps. The IP40 front protection means it's fine inside a closed panel; don't mount it where washdown or dust gets at the face.
Panel fit — dimensions and mounting
The breaker measures 70 mm deep by 76.2 mm wide by 130 mm tall — a standard 3-pole MCCB footprint that drops into most SENTRON panelboards and DIN-rail adapters without re-drilling the gland plate. The 76.2 mm width matches the typical 3-pole cutout; verify your busbar spacing if you're retrofitting into a non-Siemens panel.
How it compares to the 3VA1110-5EE32-0JA0
The 3VA1110-5EE32-0JA0 is a higher-rated sibling — 100 A frame, electronic release, likely a different trip curve and higher interrupting capacity. The 3VA1063-2ED36-0JA0 is the 63 A thermal-magnetic version with a shunt trip. If your BOM calls for 63 A and a TM release, this is the one; the 1110 frame won't drop in without re-terminating the load cables and checking the busbar ampacity.