63 A MCCB with TM210 release — what the interrupting ratings mean for your panel
The Siemens 3VA1063-4ED36-0AE0 is a 3-pole SENTRON molded case circuit breaker rated 63 A continuous at 40 °C, carrying the full 63 A up to 50 °C before it starts to derate — 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. That thermal curve means if your panel ambient runs 55 °C you lose 1 A; at 70 °C you lose 5 A. The TM210 thermal-magnetic release handles overloads and short circuits without an external trip unit. Interrupting capacity is the headline: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. For a 480 V panel that 52.5 kA at 440 V is the closest published figure — expect similar headroom at 480 V. Rated insulation voltage is 800 V, so it's comfortable on 690 V systems. Maximum power loss is 17.3 W, which matters for enclosure heat rise calculations.
DIN-rail footprint and panel fit
Dimensions are 130 mm height, 76.2 mm width (3 in), 70 mm depth (2.76 in). That 76.2 mm width is a standard 3-pole MCCB footprint — it occupies three 25.4 mm module positions on a DIN rail. The 70 mm depth keeps it clear of most gland plates and backpanel wiring troughs. No undervoltage release, no voltage trigger, no communication module on this variant — it's a straight line-protection breaker with the TM210 release and space for up to 4 auxiliary switches (HQ type) if you add them later.