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    • NBN420A
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    3250614618505
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    MCB 4P 10kA/15kA B-20A 4M NBN420A

    Phase out product: please contact your electrical wholesaler for availability

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    MCB 4P 10kA/15kA B-20A 4M

    NBN420A

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    product.page.accessories.associated-products

  • product.page.accessories.see-more (10)
    • Modular phase busbar 2 product.page.accessories.products-available
    • Locking inter­locking func­tions 1 product.page.accessories.products-available
    • Phase separ­a­tion func­tions 1 product.page.accessories.products-available
    • Terminal cover 1 product.page.accessories.products-available
    • Mech­anic accessories for low-voltage compon­ents 1 product.page.accessories.products-available
    • Shunt release 1 product.page.accessories.products-available

    product.page.accessories.title-modal

    • Modular phase busbar
    • Locking inter­locking func­tions
    • Phase separ­a­tion func­tions
    • Terminal cover
    • Mech­anic accessories for low-voltage compon­ents
    • Shunt release
    • Auxil­i­aries contact block
    • Protective cap/strip for phase busbar
    • KDN463B

      Insulated busbar 4P 63A fork 10mm² 57M
      €0.00  / *
    • KDN480B

      Insulated busbar 4P 80A fork 16mm² 56M
      €0.00  / *
    • MZN175

      Padlockable locking kit for MCB, RCCB and RCBO
      €0.00  / *
    • MZN121

      1 set of 3 inter-pole barriers for MCB
      €0.00  / *
    • MZN120

      Terminal shield / screw shield for MCB
      €0.00  / *
    • LZ060

      Heat dissipation insert
      €0.00  / *
    • MZ203

      Shunt trip 230-415V AC 110-130V DC
      €0.00  / *
    • MZ202

      Alarm contact 1C+1O 6A 240V AC
      €0.00  / *
    • MZ201

      Auxiliary contact 1C+1O 6A 240V AC
      €0.00  / *
    • KZN024

      Endcap for busbar KDN 4 poles
      €0.00  / *

    catalog.pageproduct.tab_additional_title.link

    Elec­tric current
    • Rated current IN
      20 A
    • Rated service breaking capa­city Ics under 230 V AC according to IEC 60947-2
      15 kA
    • Rated short-­cir­cuit breaking capa­city Icn under 230 V AC according to IEC 60898-1
      20 kA
    • Rated ulti­mate short-­cir­cuit breaking capa­city Icu AC IEC 60947-2
      15 kA
    • Rated ulti­mate short-­cir­cuit breaking capa­city Icu under 400 V AC IEC 60947-2
      15 kA
    • Rated current at -15°C
      24.02 A
    • Rated current at -10°C
      23.57 A
    • Rated current at -5°C
      23.12 A
    • Rated current at 0°C
      22.68 A
    • Rated current at 5°C
      22.23 A
    • Rated current at 10°C
      21.79 A
    • Rated current at 15°C
      21.34 A
    • Rated current at 20°C
      20.89 A
    • Rated current at 25°C
      20.45 A
    • Rated current at 30°C
      20 A
    • Rated current at 35°C
      19.45 A
    • Rated current at 40°C
      18.91 A
    • Rated current at 45°C
      18.36 A
    • Rated current at 50°C
      17.81 A
    • Rated current at 55°C
      17.26 A
    • Rated current at 60°C
      16.72 A
    • Rated current at 65°C
      16.17 A
    • Rated current at 70°C
      15.62 A
    • Rated short-­cir­cuit breaking capa­city Icn under 400 V AC according to IEC 60898-1
      10 kA
    • Rated service breaking capa­city Ics AC according to IEC 60947-2
      50 %
    • Rated service breaking capa­city Ics AC according to IEC 60898-1
      7.50 kA
    • Rated ulti­mate short-­cir­cuit breaking capa­city Icu under 230 V AC IEC 60947-2
      30 kA
    Archi­tec­ture
    • Type of pole
      4P
    • Curve
      B
    Capa­city
    • Number of modules
      4
    Main elec­trical attrib­utes
    • Rated short-­cir­cuit breaking capa­city Icn AC according to IEC 60898-1
      10 kA
    Install­a­tion, mounting
    • Nominal tight­ening torque top terminal
      2.80 - 2.80 Nm
    • Nominal tight­ening torque down terminal
      2.80 - 2.80 Nm
    • Nominal tight­ening torque
      2.80 - 2.80 Nm
    • Type of bottom connec­tion for modular devices
      bicon­nect
    • Type of top connec­tion for modular devices
      Screw terminal
    • 360° mounting posi­tion possible
      catalog.pageproduct.attribute_boolean.yes
    Voltage
    • Rated oper­a­tional voltage Ue
      400 - 400 V
    • Type voltage supply
      AC
    • Rated insu­la­tion voltage Ui
      500 V
    • Rated impulse with­stand voltage Uimp
      6,000 V
    Frequency
    • Frequency
      50 - 60 Hz
    Connec­tion
    • Cross-sec­tion of input and output with screws, for massive conductors
      1 - 35 mm²
    • Cross-sec­tion of input and output with screws, for flex­ible conductors
      1 - 25 mm²
    • Cross-sec­tion of input with screws, for flex­ible conductors
      1 - 25 mm²
    • Cross-sec­tion of input with screws, for massive conductors
      1 - 35 mm²
    Safety
    • Ingress Protec­tion (IP) class
      IP20
    • Grid distance
      60 mm
    Use condi­tions
    • Degree of pollu­tion according to IEC 60664 / IEC 60947-2
      2
    • Class of energy limit­a­tion I²t
      3
    • Oper­ating temper­ature
      -25 - 70 °C
    Power
    • Power dissip­a­tion at IN
      10.87 W
    Connectivity
    • Type of connec­tion
      Screw terminal
    • Top connec­tion align­ment for modular devices
      Aligned terminal
    • Down connec­tion align­ment for modular devices
      Aligned terminal
    Dimen­sions
    • Width
      70 mm
    • Height
      83 mm
    • Depth
      70 mm
    Endur­ance
    • Elec­tric endur­ance in number of cycles
      4,000

    catalog.pageproduct.title_sustainability.h2

    We are committed to bettering our environmental performance by reducing our footprint while acting as a sustainability enabler for our customers catalog.pageproduct.product_description_learn_more.link

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    Hager REACH declaration NBN420A
    PDF
    Hager RoHS report NBN420A
    PDF

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    • Product image

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      catalog.pageproduct.title_product_image.div NBN420A

    • GeneratedProductDatasheet

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      Hager Product data sheet NBN420A

      MCB 4P 10kA/15kA B-20A 4M

      PDF

    • ProductECDeclaration

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      Declaration of conformity en-US 2026-07-15

      PDF
      274,42 kB
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      UKCA Declaration of Conformity

      Declaration of conformity en-GB 2024-10-02

      PDF
      653,93 kB
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    Products

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    We deliver safe and simple electrical solutions, from energy distribution to lighting control and wiring accessories systems for commercial and residential buildings. We want to make life on our planet safer, cleaner and more enjoyable. While being easy to work with, we remain by your side throughout the entire project, cooperating, collaborating and co-creating with you.

     

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    Hager Ltd, Unit M2 Furry Park Industrial Estate, Santry, Dublin D09 NY19, Ireland