That 63 A holds steady even at 70 °C, which is unusual; most breakers start dropping current above 40 °C. The interrupting capacity hits 330 kA at 240 V, 242 kA at 415 V and 440 V, and 187 kA at 500 V — drops to 3.7 kA at 690 V, so watch the system voltage if you're spec'ing into a 690 V line. The design is explicitly motor protection, which means the thermal-magnetic or electronic trip curve is shaped for motor inrush — it rides through the starting surge without nuisance tripping, then clears a locked-rotor fault. No undervoltage release on this variant, so if you need UVR, this isn't the order code. Dimensions are 105 mm wide, 181 mm high, 86 mm deep — standard 3VA2 3-pole footprint.
Integration notes for the panel builder
The 4 W maximum power loss is the heat dissipated at full rated current — factor that into your enclosure ventilation calculation if you're stacking multiple breakers in a sealed box.