Australia 
The Hager MCB 3P 40A D-curve 3M provides robust protection for three-phase circuits, ideal for motors and high-inrush loads in commercial/industrial installations. Breaking capacities: 10kA (IEC 60898-1) and 15kA Icu (IEC 60947-2) at 400V AC. Ui 500V, Uimp 6kV, 50/60Hz. Compact 3 modules, IP20, −25…70°C, 360° mounting. Screw/biconnect terminals accept 1-35 mm², 2.8 Nm. Endurance: 20,000 mech/4,000 elec. For installation in residential and commercial switchboards,suitable for DIN rail mounting.
EAN
3250614619281
Packaging
4
Hager MCB 3P 40A Curve D 10kA IEC60898-1 / 15kA IEC60947-2 3 modules NDN340A
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Complete your system
Optional accessories
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Locking interlocking functions 1 products available -
Phase separation functions 1 products available -
Terminal cover 1 products available -
Under voltage coil 1 products available -
Shunt release 2 products available -
Auxiliaries contact block 2 products available
Complete your system
Technical properties
Electric current
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Rated current40 A
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Rated ultimate short-circuit breaking capacity Icu under 400 V AC IEC 60947-215 kA
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Rated current 30°C40 A
Architecture
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Type of pole3P
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CurveD
Capacity
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Number of modules3
Main electrical attributes
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Rated short-circuit breaking capacity Icn AC according to IEC 60898-110 kA
Installation, mounting
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Nominal tightening torque top terminal2,80 - 2,80 Nm
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Nominal tightening torque down terminal2,80 - 2,80 Nm
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Nominal tightening torque2,80 - 2,80 Nm
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Type of bottom connection for modular devicesbiconnect
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Type of top connection for modular devicesScrew terminal
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360° mounting position possibleYes
Voltage
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Rated operational voltage Ue400 - 400 V
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Type voltage supplyAC
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Rated insulation voltage Ui500 V
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Rated impulse withstand voltage Uimp6000 V
Frequency
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Frequency50 - 60 Hz
Connection
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Cross-section of input and output with screws, for massive conductors1 - 35 mm²
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Cross-section of input and output with screws, for flexible conductors1 - 25 mm²
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Cross-section of input with screws, for flexible conductors1 - 25 mm²
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Cross-section of input with screws, for massive conductors1 - 35 mm²
Safety
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Ingress Protection (IP) classIP20
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Grid distance60 mm
Use conditions
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Degree of pollution according to IEC 60664 / IEC 60947-22
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Operating temperature-25 - 70 °C
Power
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Total power loss under IN10,10 W
Endurance
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Electric endurance in number of cycles4000
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Number of mechanical operations20000
Connectivity
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Type of connectionScrew terminal
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Top connection alignment for modular devicesAligned terminal
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Down connection alignment for modular devicesAligned terminal
Dimensions
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Height83 mm
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Width52,50 mm
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Depth70 mm
Environmental value
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Certifications and documents
Downloads
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Product image
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Product datasheet
Hager Product data sheet NDN340A
MCB 3P 10kA/15kA D-40A 3M
PDF -
Product data sheet
NDNxxxC Product Data and Technical Specification
Product data sheet en-GB 2015-07-06
PDF92,06 kB
UK_PD_TDS_TransformerMotorprotection.pdf
Technical data sheet recommending MCB's for single phase and three phase transformers.
PDF204,90 kB -
Declaration of conformity
EU Declaration of Conformity
Declaration of conformity en-GB 2024-10-02
PDF650,27 kB
UKCA Declaration of Conformity
Declaration of conformity en-GB 2024-10-02
PDF653,93 kB
More documentation
