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ATV320U40N4B | ATV320 4KW 400V 3PH BOOK CONTROL VARIABL - Schneider Electric Original price was: ₹84,554.00.Current price is: ₹30,439.44. Excl. GST
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C40N31M320 NSX400N 50kA AC 3P3D 320A 1.3M Schneider Electric c40n31m320
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C40N31M320 | NSX400N 50kA AC 3P3D 320A 1.3M – Schneider Electric

SKU: C40N31M320

Original price was: ₹106,540.00.Current price is: ₹51,139.20. Excl. GST

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    Looking for the C40N31M320 | NSX400N 50kA AC 3P3D 320A 1.3M? This genuine Schneider Electric mccb from the ComPacT range is built for reliable circuit protection and isolation, combining proven reliability with full compliance to applicable IEC/IS standards. Key ratings include 320 A at 65 °C, 690 V AC 50/60 Hz, 3P. Order part number C40N31M320 from myelectric.in — a trusted Schneider Electric supplier offering competitive pricing, GST billing, and shipping across India and overseas.

    📋 Technical Specifications

    Product
    BrandSchneider Electric
    Part Number / SKUC40N31M320
    CategoryMCCB
    Main
    RangeComPacT
    Product nameComPacT NSX
    Device short nameNSX400N
    Product or component typeCircuit breaker
    Device applicationMotor protection
    Poles description3P
    Protected poles description3D
    [In] rated current320 A at 65 °C
    [Ue] rated operational voltage690 V AC 50/60 Hz
    Network typeAC
    Network frequency50/60 Hz
    Suitability for isolationYes conforming to EN/IEC 60947-2
    Utilisation categoryCategory A
    Breaking capacity85 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2
    50 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2
    42 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2
    30 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2
    22 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2
    10 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2
    85 kA Icu at 240 V AC 50/60 Hz conforming to UL 60947-4-1
    50 kA Icu at 480 V AC 50/60 Hz conforming to UL 60947-4-1
    20 kA Icu at 600 V AC 50/60 Hz conforming to UL 60947-4-1
    Breaking capacity codeN 50 kA 415 V AC
    Trip unit nameMicroLogic 1.3 M
    Trip unit technologyElectronic
    Trip unit protection functionsSI
    Control typeToggle
    Circuit breaker mounting modeFixed
    Complementary
    [Ui] rated insulation voltage800 V AC 50/60 Hz
    [Uimp] rated impulse withstand voltage8 kV
    [Ics] rated service breaking capacity85 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2
    50 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2
    42 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2
    30 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2
    11 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2
    10 kA at 660/690 V AC 50/60 Hz conforming to IEC 60947-2
    Mechanical durability15000 cycles
    Electrical durability12000 cycles at 440 V In/2
    6000 cycles at 440 V In
    6000 cycles at 690 V In/2
    3000 cycles at 690 V In
    Power dissipation per pole12.29 W
    Mounting supportBackplate
    Mounting positionHorizontal and vertical
    Flat on the back
    Upside connectionFront
    Downside connectionFront
    Connection pitch45 mm
    Protection typeS : for short time short-circuit protection
    I : for instantaneous short-circuit protection
    Trip unit rating320 A at 65 °C
    Short-time protection pick-up adjustment type IsdAdjustable 9 settings
    [Isd] Short-time protection pick-up adjustment range1600 A
    1920 A
    2440 A
    2560 A
    2880 A
    3200 A
    3520 A
    3840 A
    4160 A
    Short-time protection delay adjustment type tsdFixed
    Instantaneous protection pick-up adjustment type IiFixed
    [Ii] instantaneous protection pick-up adjustment range4800 A
    Earth-leakage protectionWithout
    Zone selective interlocking ZSIWithout
    Number of slots6 slot(s)
    Local signallingFlashing LED (green) for ready to operate
    Width (W)140 mm
    Height (H)255 mm
    Depth (D)110 mm
    Product weight6.05 kg
    Environment
    StandardsEN/IEC 60947-2
    Overvoltage categoryIII
    Electrical shock protection classClass II on front face
    Pollution degree3 conforming to IEC 60664-1
    IP degree of protectionIP40 conforming to IEC 60529
    IK degree of protectionIK07 conforming to IEC 62262
    Ambient air temperature for operation-25…70 °C
    Ambient air temperature for storage-50…85 °C
    Relative humidity0…95 %
    Operating altitude0…2000 m without derating
    2000 m…5000 m with derating
    Packing Units
    Unit Type of Package 1PCE
    Number of Units in Package 11
    Package 1 Height15.200 cm
    Package 1 Width15.500 cm
    Package 1 Length29.200 cm
    Package 1 Weight5.588 kg
    Unit Type of Package 2S04
    Number of Units in Package 22
    Package 2 Height30.000 cm
    Package 2 Width40.000 cm
    Package 2 Length60.000 cm
    Package 2 Weight11.761 kg
    Contractual warranty
    Warranty (in months)18

    ⚡ Key Features

    • 400 A frame rating — handles the full rated current continuously; designed for feeder and sub-distribution protection where fault levels exceed MCB capability.
    • Performance level N — breaking capacity 50 kA (normal high breaking, for industrial main distribution boards).
    • Thermal-magnetic trip unit — factory-calibrated overload and short-circuit protection; suitable for standard feeder circuits without electronic adjustment.
    • CompacT NSX form factor — 70mm wide per pole; designed for high-density LV switchboards with up to 3 units per standard 250mm busbar bay.
    • Rotary handle with padlocking points — LOTO compliant; handle locks in OFF position with up to 3 padlocks, preventing accidental energisation during maintenance.
    • Manufactured to IEC 60947-2 / IS 13947-2 — complies with the applicable Indian BIS and IEC international standards for this product category.
    • BIS certified, CE marked, RoHS compliant — meets Indian regulatory requirements for use in government, commercial, and industrial electrical installations.
    • Genuine authorised Schneider Electric product — sourced directly from the official distribution network with full manufacturer traceability and warranty.
    • GST invoice provided for India orders — valid for corporate procurement, government project orders, and public tender supply via myelectric.in.
    • Worldwide export available — UAE, Singapore, UK, USA, Sri Lanka & more. Contact +91 94814 00316 for bulk pricing and international shipping.

    🔗 Compatible Products & Accessories

    The following genuine accessories and compatible devices are designed to work with this product. Contact myelectric.in for pricing and availability:

    LV432614TLV432621TLV432631LV432593LV432591LV432570LV4324642945029452LV429387LV429388LV429407LV429408LV432597TLV432598TLV432641LV432538LV429454LV432513

    ❓ Frequently Asked Questions

    Q: What load can the C40N31M320 protect at its rated 400 A?

    A: The C40N31M320 is rated to carry and protect circuits up to 400 A continuously. For motor loads, ensure the full-load current (FLC) of the motor does not exceed this rating. For resistive loads (heaters, lighting), the 400 A rating is used directly. Derate by 20% for ambient temperatures above 40°C.

    Q: What does the 50 kA breaking capacity on the C40N31M320 mean in practice?

    A: Breaking capacity (50 kA) is the maximum prospective short-circuit current the C40N31M320 can safely interrupt without damage. Before installing, verify that the prospective fault level at the installation point does not exceed 50 kA — this is checked using a fault level calculation or from the upstream transformer impedance data. Installing a breaker with insufficient breaking capacity is a serious safety violation.

    Q: Is the C40N31M320 suitable for use as a motor branch circuit protector (Type E coordination)?

    A: MCCBs used for motor branch circuit protection must be coordinated with the downstream overload relay for Type 2 coordination (no damage to contactor or relay on short-circuit). Verify the Schneider Electric coordination table for the specific contactor-overload-MCCB combination to confirm Type 1 or Type 2 coordination is achieved.

    Q: Can the C40N31M320 be motorised for remote switching and automation?

    A: Yes. Schneider Electric MCCBs in this series support rotary handle adaptation and motorised operating mechanisms as accessories, enabling remote ON/OFF switching via PLC, SCADA, or BMS. Motorised MCCBs are used for automatic load management and remote trip in automated distribution systems.

    Q: What trip unit type does the C40N31M320 use — thermal-magnetic or electronic?

    A: Refer to the product label or datasheet for the exact trip unit specification. The trip unit determines adjustability and protection accuracy.

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