Vigi C120 125A 4P 30mA…1000mA; Adaptable residual current device

Acti 9 Vigi C120 Earth Leakage Add-on Block, 4P, 300 mA, Class A

Catalogue Number: A9N18579
Vigi C120 125A 4P 30mA…1000mA; Adaptable residual current device
RRP (Inc. GST)


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Range of product
Product or component type
add-on residual current devices
Device short name
Vigi C120
Poles description
[In] rated current
125 A
Network type
Earth-leakage sensitivity
300 mA
Earth-leakage protection time delay
Earth-leakage protection class
type A
Device location in system
Network frequency
50/60 Hz
[Ue] rated operational voltage
230...415 V AC 50/60 Hz
Residual current tripping technology
voltage independent
[Ui] rated insulation voltage
500 V AC 50/60 Hz conforming to IEC 60947-1
[Uimp] rated impulse withstand voltage
6 kV conforming to IEC 60947-2
Mounting mode
Mounting support
35 mm symmetrical DIN rail
Electrical connection to mcb
by screws
9 mm pitches
95 mm
198 mm
73 mm
Net weight
0.58 kg
Mechanical durability
20000 cycles
Connections - terminals
  • tunnel type terminals 1-35 mm² flexible
  • tunnel type terminals 1-50 mm² rigid
    • Wire stripping length
      15 mm
      Tightening torque
      3.5-3.5 N.m
      Product compatibility
      single terminal
      Compatibility code
      Vigi C120
      Market segment
    • residential
    • small commercial
      • Standards
        EN 61009
        IP degree of protection
        Pollution degree
        3 conforming to IEC 60947-2
        Ambient air temperature for operation
        -25-60 °C
        Ambient air temperature for storage
        -40-60 °C
        Sustainable offer status
        Green Premium product
        REACh Regulation
        Free of Substances of Very High Concern above the threshold
        EU RoHS Directive
        Mercury free
        RoHS exemption information
        China RoHS Regulation
        Product out of China RoHS scope. Substance declaration for your information
        Environmental Disclosure
        The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins
        18 months

        Frequently Asked Questions

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        Are the A9N18359 and A9A26924 compatible?

        The ref A9N18359 is C120 MCB (Multi9 design in the white material).

        The ref A9A26924 is iOF auxiliary (Aciti9 design for iC60 MCB).

        I can confirm that the parts A9N18359 and A9A26924 are not compliant with each other


        Wanted to know if A9N18524 can be used as 3 pole breaker instead of 4 pole?

        Yes, customer can use the 3 pole and leave 4 pole open.

        If a 3 pole 63A ,D curve 10kA MCB is no longer available in the C120 frame - what can I use instead?

        Code = A9N18511  3 pole, 15kA, 63A, (27mm wide)   

        What is the new code for the 18364?

        The new code is now A9N18364

        What is the alternative replacement for old merlin Gerin code 18073 ?

        Code =  A9E18073

        What is the part number for the 80 amp 3 pole and neutral 30mA RCBO, 10kA?

        The RCBO is made up with the 4 pole iC120N circuit breaker, part number A9N18372 plus add the 4 pole Vigi unit A9N18578 


        User-added image    User-added image

        Is there a Din mounted 2P changeover switch?

        It is available in acti 9 range:
        A9E18074 which is 20A 250V rated.
        Please see attached wiring diagram.

        Is there a lower amperage rated circuit breaker in the A9N18467?

        No, unfortunately not in that particular model.

        For further information please visit

        What is the part number for a B curve 125A 3P breaker

        The part number is A9N18426

        How many poles wide is the iC120 3 pole 80amp C/B - A9N18365?

        The A9N18365 is 3 pole wide but is 27mm per pole , thus meaning it will need a 4.5 pole wide enclosure 81mm
        For further information , visit link below:-
        User-added image

        What is the replacement for 18354, 4P pole , B curve, 100A, 10KA circuit breaker?

        We do not have a direct replacement for 18354. We have A9N18436 which is rated to 15KA.  A9N18436 is 4P pole , B curve, 100A, 15KA circuit breaker.
        For further information, please visit


        Is it okay to terminate aluminium cables to the Acti 9 MCB's?

        Aluminium is more corrosive than copper and it can cause high resistance to the current flow over the period of time, So it is highly recommend to use the 27060 aluminium connection terminal if you are using Aluminium cables.