Snaps onto standard DIN rail (REG). Feed from top or bottom — no preferred orientation. Mounting position is unrestricted, which simplifies panel layout when the busbar run forces an upside-down placement. IP20 with the distribution board cover and conductors connected; overvoltage category III, so it's rated for fixed-installation downstream of the utility meter.
Thermal and electrical limits
Maximum permissible series fuse is 63 A. No provision for add-on auxiliary or shunt-trip modules; this is a standalone RCCB.
Silicon-free construction. Test-circuit supply minimum 195 V AC. Mechanical service life 2 000 operating cycles typical — adequate for a protection device that operates infrequently, not a switching duty contactor.