ComPacT NSX DC Range
Description
The ComPacT NSX DC range covers the following applications:
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Electrical distribution protection
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Photovoltaic (PV) applications
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Marine applications
The ComPacT NSX DC range is compliant with the following standards:
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IEC 60947-2 for circuit breakers
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IEC 60947-3 for switch-disconnectors
The ComPacT NSX direct current (DC) range consists of:
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Circuit breakers operating on direct current from 16 to 600 A up to 750 Vdc
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Circuit breakers operating on direct current from 630 to 1200 A up to 600 Vdc
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Switch-disconnectors operating on direct current from 16 to 630 A up to 750 Vdc
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Switch-disconnectors operating on direct current from 100 to 630 A up to 1500 Vdc
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A set of standard accessories and auxiliaries shared with the ComPacT NSX AC range
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A set of specific accessories to meet the needs of series or parallel connection of poles required in high-voltage DC systems
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Circuit breakers for general-purpose (GP) applications including DC distribution for critical services (for example: Telecom, auxiliaries, and safety services):
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Circuit breakers for photovoltaic (PV) and marine applications:
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4 poles from 80 to 500 A up to 1000 Vdc
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4 poles from 100 to 500 A up to 1500 Vdc
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Switch-disconnectors for photovoltaic (PV) and marine applications:
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4 poles from 80 to 500 A up to 1000 Vdc
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4 poles from 100 to 500 A up to 1500 Vdc
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Convention
In this guide, the term circuit breaker covers circuit breakers and switch-disconnectors.
Fixed Circuit Breaker
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A Sealable terminal shields B Interphase barriers C TM-D, TM-G trip unit D BSCM Modbus SL/ULP module E Indication contact F Wireless indication auxiliary G Voltage release H NSX cord I Motor mechanism |
J Extended rotary handle K Direct rotary handle L Terminal extensions M Rear connectors N Cable connectors O One-piece spreader P Parallel and series connectors Q Toggle handle |
Withdrawable or Plug-in Circuit Breaker
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A Sealable long terminal shields for plug-in base B Interphase barriers C Parallel and series connectors D Automatic withdrawable auxiliary connector E Manual auxiliary connector |
F Chassis side plate for withdrawable circuit breaker G Circuit-breaker side plate H Adapter I Power connections J Circuit-breaker plug-in base |
K Lugs L Rear connectors M Terminal extensions N Cable connectors O Rear connectors P Adapter |
Identification
The faceplate on the front of the circuit breaker identifies the circuit breaker and its characteristics.
A Device size and rated current
B Circuit breaker disconnector symbol
C Ui: rated insulation voltage
D Uimp: rated impulse withstand voltage
E Ics: rated service short-circuit breaking capacity
F Icu: rated ultimate short-circuit breaking capacity
G Ue: rated operational voltage
H Standards
ComPacT NSX DC EP 1500 Vdc Circuit Breaker
The ComPacT NSX DC EP circuit breaker is dedicated to applications up to 1500 Vdc and has the following characteristics:
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Ultimate breaking capacity Icu = 50 kA at 1500 Vdc
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Service breaking capacity Ics = 20 kA at 1500 Vdc
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Supplied with a non-interchangeable thermal-magnetic trip unit
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Adjustable ratings: 100 A to 500 A
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4 poles from 16 to 500 A
The following restrictions apply to ComPacT NSX DC EP circuit breakers:
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Not compatible with plug-in base or chassis
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No communication available
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Rear connection available only for frame size 100 A to 250 A.
Trip Units
The ComPacT NSX DC circuit breakers use thermal-magnetic trip units.
For more information about trip units, see the related description.
Trip Unit Settings
The circuit breaker trip unit settings must satisfy the requirements of the performance and installation diagram.
The dial positions on the front of the thermal-magnetic trip unit set the circuit breaker pickup settings.
A Overload protection setting
B Short-circuit protection setting