What the ratings mean for your panel
The Siemens 3VA1163-6EE46-0AA0 is a SENTRON 3VA1 molded case circuit breaker (MCCB) sized for line protection in distribution panels. Four poles, rated continuous current Iu of 63 A, with a TM220 thermal-magnetic release — meaning the thermal element handles overloads and the magnetic element clears short-circuits without external trip units. Breaking capacity is the headline: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V. At 500 V and 690 V it still holds 17 kA. That 220 kA at 240 V puts this in the high-fault category — suitable for transformer secondaries or large bus risers where prospective fault current exceeds 100 kA. The 154 kA at 415 V covers most European industrial mains without needing a current-limiting upstream fuse. Thermal derating is tight: full 63 A from 40 °C through 50 °C, then 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, 58 A at 70 °C. That means in a 50 °C panel ambient you get the full nameplate; above that you lose roughly 1 A per 5 °C rise. The 17.3 W maximum power loss at rated current is the heat you need to vent — factor it into the enclosure thermal budget. Dimensions: 70 mm deep, 101.6 mm wide, 130 mm high. Four-pole width at 101.6 mm (4 inches) is standard for this frame size — it occupies one 4-inch module on the DIN rail or panel-mount footprint. IP40 on the front means tools and fingers stay out; the rest of the breaker is open to the enclosure air for cooling.
Panel integration notes
Mounts on a DIN rail or directly to a backplate via the four-pole footprint. The 70 mm depth (2.76 in) leaves clearance behind a standard enclosure door. Insulation voltage rated at 800 V (Ui), so it can be used in 690 V systems without derating the insulation path. Operating temperature range -25 °C to 70 °C; storage from -40 °C to 80 °C. The TM220 release is fixed — no interchangeable trip units, no voltage-trigger accessory.