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    • Modular protection devices
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    • Miniature circuit breakers (MCB)
    • NRN306
    EAN
    3250614645136
    VPE
    1 piece
    • Miniature circuit breakers (MCB)

    MCB 3P 25kA C-6A 3M NRN306

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    MCB 3P 25kA C-6A 3M

    NRN306

    • Accessories
    • Technical characteristics
    • catalog.pageproduct.title_sustainability.h2
    • Documentations
    • More products

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    product.page.accessories.associated-products

  • product.page.accessories.see-more (11)
    • Locking interlocking functions 1 product.page.accessories.products-available
    • Mechanic accessories for low-voltage components 1 product.page.accessories.products-available
    • Under voltage coil 1 product.page.accessories.products-available
    • Shunt release 2 product.page.accessories.products-available
    • Undervoltage and overvoltage release 1 product.page.accessories.products-available
    • Auxiliaries contact block 2 product.page.accessories.products-available

    product.page.accessories.title-modal

    • Locking interlocking functions
    • Mechanic accessories for low-voltage components
    • Under voltage coil
    • Shunt release
    • Undervoltage and overvoltage release
    • Auxiliaries contact block
    • Modular phase busbar
    • MZN175

      Padlockable locking kit for MCB, RCCB and RCBO

      €0.00  / *
    • LZ060

      Heat dissipation insert

      €0.00  / *
    • MZ206

      Under voltage release 230V AC

      €0.00  / *
    • MZ204

      Shunt trip 24-48V AC 12-48V DC

      €0.00  / *
    • MZ203

      Shunt trip 230-415V AC 110-130V DC

      €0.00  / *
    • MZ212

      Over voltage release 230V AC

      €0.00  / *
    • MZ202

      Alarm contact 1C+1O 6A 240V AC

      €0.00  / *
    • MZ201

      Auxiliary contact 1C+1O 6A 240V AC

      €0.00  / *
    • KDN363A

      Insulated busbar 3P 63A fork 10mm² 12M

      €0.00  / *
    • KDN380B

      Insulated busbar 3P 80A fork 16mm² 57M

      €0.00  / *
    • KDN363B

      Insulated busbar 3P 63A fork 10mm² 57M

      €0.00  / *

    Technical characteristics

    Electric current
    • Rated current IN
      6 A
    • Rated service breaking capacity Ics under 230 V AC according to IEC 60947-2
      15 kA
    • Rated ultimate short-circuit breaking capacity Icu AC IEC 60947-2
      25 kA
    • Rated ultimate short-circuit breaking capacity Icu under 400 V AC IEC 60947-2
      25 kA
    • Rated current at -15°C
      7.36 A
    • Rated current at -10°C
      7.21 A
    • Rated current at -5°C
      7.06 A
    • Rated current at 0°C
      6.91 A
    • Rated current at 5°C
      6.76 A
    • Rated current at 10°C
      6.61 A
    • Rated current at 15°C
      6.45 A
    • Rated current at 20°C
      6.3 A
    • Rated current at 25°C
      6.15 A
    • Rated current at 30°C
      6 A
    • Rated current at 35°C
      5.8 A
    • Rated current at 40°C
      5.6 A
    • Rated current at 45°C
      5.39 A
    • Rated current at 50°C
      5.19 A
    • Rated current at 55°C
      4.99 A
    • Rated current at 60°C
      4.79 A
    • Rated current at 65°C
      4.58 A
    • Rated current at 70°C
      4.38 A
    • Rated ultimate short-circuit breaking capacity Icu under 230 V AC IEC 60947-2
      50 kA
    Architecture
    • Type of pole
      3P
    • Curve
      C
    Capacity
    • Number of modules
      3
    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
      Yes
    Voltage
    • Rated operational voltage Ue
      230 - 415 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
    • Air humidity protection
      For all climates
    • Operating temperature
      -25 - 70 °C
    Power
    • Power dissipation at IN
      4.06 W
    Connectivity
    • Type of connection
      Screw terminal
    • Top connection alignment for modular devices
      Aligned terminal
    • Down connection alignment for modular devices
      Aligned terminal
    Dimensions
    • Height
      83 mm
    • Width
      52.50 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. Learn More

    RoHS conform Yes

    catalog.pageproduct.sustainability_block.downloads_h3

    PEP - MCB 1P 6kA B-16A, 1 module (English)
    PDF
    67,85 MB
    REACH declaration NRN306
    PDF
    RoHS report NRN306
    PDF

    Downloads

    • Image NRN306  | Hager UK

      Product Image NRN306

    • GeneratedProductDatasheet

      Image Hager Product data sheet NRN306  | Hager UK

      Hager Product data sheet NRN306

      MCB 3P 25kA C-6A 3M

      PDF
    • ProductECDeclaration

      Image Declaration of conformity en-US 2026-07-15  | Hager UK

      Declaration of conformity en-US 2026-07-15

      PDF
      274,42 kB
      Image UKCA Declaration of Conformity  | Hager UK

      UKCA Declaration of Conformity

      Declaration of conformity en-GB 2024-10-02

      PDF
      653,93 kB
    More documentation

    Discover our other products of this range

      5
    • 1
      MU210A - MCB 2P 6kA C-10A 2M
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      MCB 2P 6kA C-10A 2M
    • 2
      MT110A - MCB 1P 6kA B-10A 1M
      MT110A
      MCB 1P 6kA B-10A 1M
    • 3
      MT116A - MCB 1P 6kA B-16A 1M
      MT116A
      MCB 1P 6kA B-16A 1M
    • 4
      MT140A - MCB 1P 6kA B-40A 1M
      MT140A
      MCB 1P 6kA B-40A 1M
    • 5
      MU220A - MCB 2P 6kA C-20A 2M
      MU220A
      MCB 2P 6kA C-20A 2M

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    We deliver safe and simple electrical solutions, from energy distribution to lighting control, 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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