Complete your system
Optional accessories
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Modular phase busbar 3 products available -
Locking interlocking functions 1 products available -
Mechanic accessories for low-voltage components 1 products available -
Under voltage coil 1 products available -
Shunt release 2 products available -
Auxiliaries contact block 2 products available
Complete your system
Technical characteristics
Electric current
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Rated current IN40 A
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Rated service breaking capacity Ics under 230 V AC according to IEC 60947-215 kA
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Rated ultimate short-circuit breaking capacity Icu AC IEC 60947-225 kA
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Rated ultimate short-circuit breaking capacity Icu under 400 V AC IEC 60947-220 kA
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Rated current at -15°C56,16 A
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Rated current at -10°C54,36 A
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Rated current at -5°C52,57 A
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Rated current at 0°C50,77 A
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Rated current at 5°C48,98 A
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Rated current at 10°C47,18 A
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Rated current at 15°C45,39 A
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Rated current at 20°C43,59 A
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Rated current at 25°C41,8 A
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Rated current at 30°C40 A
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Rated current at 35°C39,89 A
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Rated current at 40°C39,79 A
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Rated current at 45°C39,68 A
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Rated current at 50°C39,57 A
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Rated current at 55°C39,46 A
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Rated current at 60°C39,36 A
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Rated current at 65°C39,25 A
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Rated current at 70°C39,14 A
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Rated ultimate short-circuit breaking capacity Icu under 230 V AC IEC 60947-240 kA
Architecture
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Type of pole4P
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CurveC
Capacity
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Number of modules4
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 Ue230 - 415 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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Class of energy limitation I²t3
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Air humidity protectionFor all climates
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Operating temperature-25 - 70 °C
Power
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Power dissipation at IN15 W
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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Width70 mm
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Depth70 mm
Environmental value
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Certifications and documents
Downloads
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Product datasheet
Hager Product data sheet NRN440
MCB 4P 20kA C-40A 4M
PDF -
Catalogue
Technical Specifications SG
Catalogue en-GB 2026-01-27
PDF3,27 MB -
Declaration of conformity
Declaration of conformity en-US 2026-07-15
PDF274,42 kB
UKCA Declaration of Conformity
Declaration of conformity en-GB 2024-10-02
PDF653,93 kB
More documentation