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  • New item   Residual current circuit breaker | 4P | 25 A | 30 mA | type AC | 380…415 V | DIN | Schneider Electric Acti9 ID K | A9Z05425

    Residual current circuit breaker | 4P | 25 A | 30 mA | type AC | 380…415 V | DIN | Schneider Electric Acti9 ID K | A9Z05425

    Code: A9Z05425
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    Residual current circuit breaker (RCCB) 4P, 25 A, 30 mA, type AC, 380…415 V AC, 4 modules (72 mm). EN/IEC 61008-1.

  • Product description

    Residual current circuit breaker | 4P | 25 A | 30 mA | type AC | 380…415 V | DIN | Schneider Electric Acti9 ID K | A9Z05425

    Schneider Electric Acti9 ID K A9Z05425 is a 4-pole residual current circuit breaker 25 A, 30 mA, type AC. It disconnects the circuit when earth leakage current reaches the sensitivity threshold, protecting people against electric shock and reducing fire risk.

    Key point:
    An RCCB does not protect against overload or short circuit – an MCB or fuse must always be installed upstream. Type AC suits ordinary household circuits; EV chargers, inverters or variable speed drives need a type A, F or B device.
    Poles / current
    4P / 25 A
    Sensitivity
    30 mA
    Type
    AC
    Width
    4 modules (72 mm)

    Operating principle

    The device compares the current flowing in the phase conductors with the current returning in the neutral. In a healthy installation they are equal.

    If part of the current leaks to earth – through damaged insulation or a person – a difference appears. At the 30 mA threshold the RCCB disconnects the circuit instantly.

    The test button is used to check operation periodically.

    Why choose A9Z05425?
    30 mA sensitivity – additional protection against direct contact when other protective measures fail.

    Technical specifications

    Product type Residual current circuit breaker (RCCB) without overcurrent protection
    Manufacturer / code Schneider Electric / A9Z05425
    Range Acti9 ID K (K60 IDK)
    Number of poles 4P
    Rated current In 25 A
    Sensitivity IΔn 30 mA
    Type AC, instantaneous
    Rated voltage 380…415 V AC
    Frequency 50/60 Hz
    Making/breaking capacity Im / IΔm 500 A
    Conditional short-circuit current Inc 6 kA with K60 MCB; 4.5 kA with gG/GL 63 A fuse
    Ui / Uimp 440 V AC / 4 kV
    Terminals 1…35 mm² rigid, 1…25 mm² flexible, strip 14 mm
    Tightening torque 3.5 N·m
    Width 4 modules (72 mm)
    Dimensions 81 × 72 × 68 mm
    Protection (terminals / front) IP20 / IP40
    Operating temperature −5…+40 °C
    Endurance (mech. / elec.) 5000 / 2000 (AC-1)
    Standards EN/IEC 61008-1, EN/IEC 61008-2-1
    Mounting 35 mm DIN rail

    Main functions

    • 30 mA sensitivity – protection of people against electric shock.
    • Instantaneous tripping – no time delay.
    • Voltage independent – electromechanical operation.
    • 4P / 25 A – for three-phase circuits and incomers.
    • Double terminals – easy connection to busbars and wires up to 35 mm².

    Where is it used?

    • Apartment and house distribution boards
    • Bathroom, kitchen and outdoor socket circuits
    • Office and commercial circuits
    • Country houses and garages
    • Temporary construction site boards
    • Retrofit of old boards

    Use by need

    For the electrician.
    Standard DIN module and clear terminals – fast installation in distribution boards.
    For the home owner.
    Protects the family from electric shock if insulation or an appliance fails.
    For the building contractor.
    A reliable solution for new apartments and houses in line with requirements.

    Practical use

    If a socket circuit is installed in a bathroom and kitchen, an MCB is placed upstream of A9Z05425 and the socket circuits are connected downstream – if insulation fails or someone touches a live part, the RCCB disconnects the circuit.

    Pros

    • 30 mA personal protection
    • Complies with EN/IEC 61008-1
    • Inc 6 kA with K60
    • Double terminals up to 35 mm²
    • Compact DIN module

    Cons / limitations

    • No overload or short-circuit protection – an MCB or fuse is required
    • Type AC is not suitable for EV chargers, inverters or variable speed drives
    • Operating temperature up to +40 °C

    Safety and installation notes

    • Install overcurrent protection upstream – an MCB or a gG/GL fuse not larger than 63 A.
    • Route the neutral through the RCCB – the downstream N must not be joined with other circuits’ N.
    • Switch off and verify absence of voltage before installation.
    • Tighten terminals to 3.5 N·m.
    • Check operation periodically with the test button.
    • Installation must be done by a qualified electrician.

    Quick selection guide

    4P
    25 A
    30 mA
    type AC
    4 modules
    EN 61008-1
    Suitable when you need:
    • Protecting people against electric shock
    • Circuit protection in domestic boards
    • Upgrading an old board to current requirements
    Check before use:
    • Whether an MCB or fuse is installed upstream
    • Load type – AC or type A / F / B needed
    • Whether the neutrals of circuits are separated
    Important reminder: An RCCB does not replace an MCB – it does not protect against overload or short circuit.
    ☝ Elsprendimai.eu recommends:
    • Schneider Acti9 iC60N / K60N miniature circuit breakers
    • Schneider Acti9 iID RCCBs – when type A is required

    FAQ

    Does it protect against short circuit?
    No – an MCB or fuse upstream is mandatory.
    Is it suitable for an EV charger?
    No – chargers require a type A, F or B device as specified by the charger.
    Which fuse upstream?
    gG/GL not larger than 63 A or a K60 MCB.
    How to test it?
    Press the test button – the RCCB must trip.
    Which wire sizes fit?
    1…35 mm² rigid or 1…25 mm² flexible.
    How many modules?
    4 modules (72 mm).

    Documents

    Residual current circuit breaker | 4P | 25 A | 30 mA | type AC | 380…415 V | DIN | Schneider Electric Acti9 ID K | A9Z05425

    Schneider Electric Acti9 ID K A9Z05425 – RCCB 4P 25 A 30 mA type AC, 4 modules, EN/IEC 61008-1. Protection of people against electric shock in domestic and commercial installations.

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.

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