The 100 mA trip threshold puts it in the 'fire-protection' band rather than 'personnel-protection' (30 mA) — it is sized to cover cable insulation faults and arcing in fixed equipment where a lower sensitivity would cause unwanted trips from leakage in long runs or industrial gear. Type A detects sinusoidal AC and pulsating DC residual currents. Overvoltage category III confirms it is rated for fixed-installation distribution boards, not just downstream equipment.
Mounting and integration into a DIN-rail board
The screw terminals accept solid or stranded copper from 1.5 mm² up to 25 mm² — enough for the 63 A feed conductors — with a tightening torque range of 2.5 to 3 N·m. IP20 with conductors connected is the standard for enclosed distribution boards — no special sealing needed inside a rated panel. Finger and back-of-hand safe construction means the terminals are touch-safe when installed per the manufacturer's instructions.