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Range
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ComPacT new generation
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Product name
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ComPacT NSX DC new generation
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Device short name
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NSX400F DC
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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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4P
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Protected poles description
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4D
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Neutral position
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Left
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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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750 V DC
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Network type
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DC
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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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36 kA Icu at 24...125 V DC 1 pole conforming to IEC 60947-2
36 kA Icu at 250 V DC 1 pole conforming to IEC 60947-2
36 kA Icu at 500 V DC 2 poles in series conforming to IEC 60947-2
36 kA Icu at 750 V DC 3 poles in series conforming to IEC 60947-2
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Performance level
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F 36 kA 750 V DC
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Trip unit name
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TM-DC
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Trip unit technology
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Thermal-magnetic
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Trip unit protection functions
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LI
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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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750 V DC conforming to IEC 60947-2
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[Uimp] rated impulse withstand voltage
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8 kV conforming to IEC 60947-2
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[Ics] rated service short-circuit breaking capacity
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36 kA at 24...125 V DC conforming to IEC 60947-2
36 kA at 250 V DC conforming to IEC 60947-2
36 kA at 500 V DC conforming to IEC 60947-2
36 kA at 750 V DC conforming to IEC 60947-2
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Mechanical durability
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5000 cycles
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Electrical durability
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2000 cycles at 750 V In/2
1000 cycles at 750 V In
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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 (thermal)
I : for short-circuit protection (magnetic)
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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
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[Ir] long-time protection pick-up adjustment range
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0.7...1 x In
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Long-time protection delay adjustment type tr
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Fixed
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Instantaneous protection pick-up adjustment type Ii
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Adjustable
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[Ii] instantaneous protection pick-up adjustment range
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2.5...5 x In
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Earth-leakage protection
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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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Width (W)
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185 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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8.4 kg
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REACh Declaration