It's an instantaneous unit — no adjustable delay — so it's suited for direct fault clearing in distribution boards where selectivity with downstream devices is managed by the upstream breaker coordination, not the RCD itself.
The 63 A rating is the continuous current at AC; at elevated ambient temperatures the unit derates — 58.6 A at 40 °C, 56.7 A at 50 °C, 50.4 A at 70 °C — so if the panel runs hot, the nominal load must stay under the derated figure. That's a common spec for general-purpose protection in commercial distribution where variable-speed drives or electronic loads are present.
Panel integration
Depth is 77 mm, installation depth 70 mm, so it fits standard 80 mm deep distribution boards. Mounting position is any orientation.