RCBO with integrated earth-leakage — 20 A, C-curve, 30 mA
It carries a 20 A rated current (In) on a C-curve magnetic trip (5–10 x In), with integrated 30 mA earth-leakage protection. The 6 kA breaking capacity at 380–415 V AC (Icn per EN/IEC 61009-2-1) clears line-to-ground faults on a standard 400 V distribution board without cascading upstream. The thermal-magnetic trip unit handles overload and short-circuit; the residual-current element covers personnel protection against indirect contact.
The 30 mA residual sensitivity is the standard threshold for socket-outlet and general-purpose circuits under IEC 60364, covering hand-held tools and portable equipment. Limitation class 3 means the device limits let-through energy, reducing stress on downstream wiring during a fault.
Clip-on mounting to a standard DIN rail. The 3P+N unit occupies 10 module pitches of 9 mm — 90 mm total width. Neutral is on the left. Tunnel terminals accept 0.75–16 mm² rigid or 0.33–10 mm² flexible conductors; tighten to 2 N·m. Strip 15 mm. IP20 on the body, IP40 inside the modular enclosure — fine for dry indoor panels; not rated for washdown.