This is a 4-pole unit rated at 63 A continuous at 40 °C, and it holds that same 63 A all the way up to 50 °C ambient; you don't start losing headroom until 55 °C (62 A) and it's still at 58 A at 70 °C. Breaking capacity is where this part earns its keep: 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. That tells you this is built for high-fault industrial networks — not a light-duty panelboard breaker.
Panel fit: dimensions and integration
The 3VA1063-4ED42-0DH0 measures 130 mm tall, 101.6 mm wide, and 70 mm deep. The 101.6 mm width is 4 inches exactly, which is the standard footprint for a 4-pole SENTRON frame at this rating. Mounting is via the standard MCCB DIN-rail or screw-mount pattern; no oddball cutout needed. Maximum power dissipation is 19.8 W. In a sealed enclosure that's not negligible — if you're stacking several of these, account for the heat rise.
What's inside: auxiliary and release configuration
Factory-equipped with two auxiliary switches and one trip alarm switch (the HQ type). The undervoltage release (UVR) is also built in — that's the coil that drops the breaker if control voltage falls below a threshold, common in safety circuits or emergency-stop chains. The basic switch assembly carries its own order code (3VA10634ED420AA0) if you ever need to replace just the switching mechanism.