The 70 mm depth matches the typical flush-mount distribution board depth, so it sits flush with the front cover when installed.
For reference, the conditional short-circuit rating per EN 60898 is 0.8 kA, and per IEC 61008-1 it is also 0.8 kA; these apply when the RCCB is backed by an upstream overcurrent device. The 30 mA rated residual operating current is the trip threshold for earth leakage. At this sensitivity the device meets the touch-voltage protection requirements of IEC 60364 for socket-outlet circuits and hand-held equipment. The instantaneous design (no intentional delay) means it trips within 40 ms at rated residual current — fast enough to limit let-through energy to 110 000 A²·s and peak let-through current to 7 100 A under fault. The IP20 rating is standard for enclosed distribution boards — the RCCB is not intended for wet or dust-exposed locations without an outer enclosure.
The silicon-free construction is relevant for potting or conformal-coating processes where silicone outgassing can cause adhesion failures. Mechanical life is rated at 3 000 switching cycles — typical for an RCCB that operates infrequently as a protective device, not a daily-use switch.