63 A frame with a TM210 trip — what the ratings mean for fit
The Siemens 3VA1163-3GD42-0AA0 is a 4-pole SENTRON molded case circuit breaker (MCCB) rated at 63 A continuous, with a TM210 thermal-magnetic overcurrent release. The TM210 designation means the thermal (overload) element is fixed at 63 A — no adjustable thermal dial — and the magnetic (short-circuit) pickup is fixed at 10× In, or 630 A. This is a line-protection design, not a motor-protection breaker; it is sized for feeder or distribution circuits where the load current is stable and the trip curve does not need to accommodate motor inrush. The interrupting ratings span the common industrial voltages: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. At 415 V — a standard three-phase distribution voltage in many markets — the 52.5 kA rating means this breaker can safely clear a fault up to that level without rupturing or welding contacts, which is sufficient for most secondary distribution panels fed by a transformer of moderate size. Thermal derating is published across the full operating range: the breaker carries 63 A continuously up to 50 °C ambient, then steps down to 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. If the panel ambient runs above 50 °C — say a crowded enclosure near a furnace line — the effective ampacity drops, and the load must be sized against the derated value, not the nameplate 63 A.
Panel fit and integration notes
Dimensions: 130 mm height, 101.6 mm width, 70 mm depth. The 70 mm depth is the body depth behind the panel face — relevant when fitting into a shallow enclosure or when clearance behind the mounting plate is tight. The 101.6 mm width (4 inches) is the standard footprint for a 4-pole 63 A frame in the 3VA1 series; it occupies four 25 mm module spaces on a DIN rail if the breaker is rail-mounted, though the 3VA1 can also be screw-mounted on a mounting plate. Rated insulation voltage is 800 V, and the front face carries IP40 protection. Maximum power loss at rated current is 17.3 W.