Ground fault monitoring is built in via summation current formation on the line conductor, so this one device covers both overcurrent and ground-fault protection in a single panel slot.
The 63 A frame carries the same interrupting ratings whether the panel ambient sits at 40 °C or 70 °C (–), so you don't lose headroom in a hot enclosure.
Field-service note
The 5.4 W maximum power loss is low enough that you don't need forced ventilation around it in a typical panel. Mechanical endurance is 20,000 operations — that's a lifetime of routine switching, not a daily cycling device. If you're swapping one in on site, the 181 mm height clears most standard distribution sections. No special tools needed beyond a Torx driver for the line and load lugs.