Residual circuit breaker 3P+N C25A 6kA AC230-400V

1) 2-in-1 protection for modular consumer units (MCB + residual current device)This 3P+N curve C, 25 A modular RCBO combines in a single device protection against overloads and short circuits (circuit breaker function) as well as protection against insulation faults (residual current function). It is suitable for installations where complete safety is required without multiplying modules: consumer unit refurbishment, adding outgoing circuits, replacing old equipment or optimising the available space. In the event of an electrical fault (overcurrent, short circuit or current leakage that may present a risk of electric shock), it trips quickly in order to cut off the power supply and limit material damage and electrical incidents.2) 3P+N configuration: designed for 400 V three-phase with neutralThe 3P+N configuration meets the needs of three-phase + neutral networks commonly found in homes with specific equipment, small shops, offices, technical rooms and small workshops. The neutral is taken into account in the device, which makes it easier to manage 400 V three-phase circuits, while remaining compatible with 230 V outgoing circuits depending on the case. Typical uses: air conditioning units, electromechanical equipment, small machines, three-phase electric heating, hot water cylinders or dedicated outgoing circuits in a distribution board. Result: clearer wiring, better structured protection and neat integration in a modular consumer unit.3) 25 A rating and curve C: balance between start-up tolerance and safetyWith a nominal rating of 25 A (C25), the device is intended for intermediate-power circuits, typical of dedicated outgoing circuits or certain three-phase equipment. The C tripping curve is recommended when loads have an inrush current (motor start-up, compressor, ventilation, certain power supplies), as it tolerates transient peaks better than a B curve and reduces nuisance tripping. It is advisable to keep a margin by avoiding a permanent load close to the maximum in order to limit overheating, stabilise operation and avoid repeated cut-offs that could mask a real fault (overload, insufficient tightening, undersized cable).4) Operating range and performance: 230 to 400 V, 50/60 Hz, breaking capacity 6 kADesigned for AC 230 to 400 V networks at 50/60 Hz, this RCBO covers the majority of low-voltage installations in Europe. Its 6 kA breaking capacity is suitable for usual applications in final distribution (residential, light commercial, consumer unit circuits). In environments where the prospective short-circuit current is higher (close to a transformer, large busbars, industrial distribution), it is recommended to have the values checked by a professional to confirm the required level or choose a higher range.5) EN 61009 compliance and installation advice: safety, diagnostics, maintenanceThe device is stated to comply with EN 61009, the reference standard for RCBOs combining magnetothermal protection and residual current protection. Integration into the consumer unit must be carried out in accordance with good practice: identification of conductors, compliance with cross-sections, tightening to torque and functional verification after installation. Frequent tripping must not be bypassed by repeated resetting: it may reveal earth leakage, moisture, ageing insulation, a real overload or incorrect connection. Keeping the consumer unit clean, dry and ventilated, and having the installation checked in case of doubt, helps maintain effective protection over time, particularly in sensitive areas (technical rooms, damp rooms, small workshops, circuits supplying machines).