The A9N26583: The 25 A rated current (In) sets the maximum continuous load the RCD can carry without derating — sized for a 25 A outgoing circuit, not for a 32 A or 40 A feeder. The 300 mA sensitivity is a time-delay-instantaneous trip for earth leakage, typically used on circuits where nuisance tripping from leakage currents (e.g., long cable runs, surge suppression) is a concern; it is not a 30 mA life-safety threshold. The 2-pole (2P) configuration switches both phase and neutral, and the part occupies 3 modules (9 mm pitches each, 27 mm total width) on the DIN rail. The voltage-independent electromechanical trip coil means the RCD will trip on earth leakage even if the supply voltage is lost — a reliability feature for fault isolation.
The bottom tunnel terminals accept 1 to 25 mm² rigid cable (1 to 16 mm² flexible) with a tightening torque of 2 N·m and a strip length of 14 mm. The red indicator on the front face shows tripped status. IP20 rated for the body, IP40 for the modular enclosure — suitable for dry indoor panel environments, not washdown or outdoor use.