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Range
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ComPacT new generation
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Product name
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ComPacT NSX new generation
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Device short name
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NSX400H
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Product or component type
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Circuit breaker
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Device application
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Distribution
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Poles description
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3P
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Protected poles description
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3D
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[In] rated current
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400 A at 40 °C
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[Ue] rated operational voltage
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690 V AC 50/60 Hz
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Network type
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AC
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Network frequency
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50/60 Hz
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Suitability for isolation
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Yes conforming to EN/IEC 60947-2
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Utilisation category
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Category A
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[Icu] rated ultimate short-circuit breaking capacity
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100 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2
70 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2
65 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2
50 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2
35 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2
20 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2
20 kA at 600 V AC 50/60 Hz conforming to UL 508
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Performance level
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H 70 kA 415 V AC
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Trip unit name
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MicroLogic 2.3
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Trip unit technology
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Electronic
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Trip unit protection functions
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LSoI
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Control type
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Toggle
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Circuit breaker mounting mode
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Fixed
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[Ui] rated insulation voltage
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800 V AC 50/60 Hz
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[Uimp] rated impulse withstand voltage
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8 kV
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[Ics] rated service short-circuit breaking capacity
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100 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2
70 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2
65 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2
50 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
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Mechanical durability
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15000 cycles
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Electrical durability
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12000 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
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Power dissipation per pole
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19.2 W
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Mounting support
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Backplate
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Mounting position
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Horizontal and vertical
Flat on the back
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Upside connection
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Front
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Downside connection
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Front
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Connection pitch
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45 mm
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Protection type
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L : for overload protection (long time)
So : for short time short-circuit protection with fixed delay
I : for instantaneous short-circuit protection
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Trip unit rating
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400 A at 40 °C
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Long-time pick-up adjustment type Ir (thermal protection)
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Adjustable 9 settings
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[Ir] long-time protection pick-up adjustment range
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160…400 A
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Long-time protection delay adjustment type tr
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Fixed
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[tr] long-time protection delay adjustment range
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400 s at 1.5 x Ir
16 s at 6 x Ir
11 s at 7.2 x Ir
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Thermal memory
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20 minutes before and after tripping
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Short-time protection pick-up adjustment type Isd
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Adjustable 9 settings
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[Isd] Short-time protection pick-up adjustment range
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1.5...10 x Ir
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Short-time protection delay adjustment type tsd
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Fixed
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Instantaneous protection pick-up adjustment type Ii
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Fixed
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[Ii] instantaneous protection pick-up adjustment range
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4800 A
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Earth-leakage protection
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Without
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Zone selective interlocking ZSI
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Without
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Number of slots for electrical auxiliaries
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6 slot(s)
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Local signalling
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Flashing LED (green) for ready to operate
LED 105 % Ir (red) for overload
LED 90 % Ir (orange) for overload
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Width (W)
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140 mm
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Height (H)
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255 mm
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Depth (D)
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110 mm
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Net weight
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6.05 kg
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REACh Declaration