Connecting ComPacT NSX Circuit Breakers to the ULP System
Introduction
Use the NSX cord to connect the ComPacT NSX circuit breakers to the ULP system:
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The ComPacT NSX circuit breaker must have a BSCM circuit breaker status control module and/or a MicroLogic 5, 6, or 7 trip unit.
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The ComPacT NSX DC circuit breaker must have a BSCM circuit breaker status control module.
For more information, refer to the following documentation:
MicroLogic Trip Units
MicroLogic 5, 6, or 7 trip units provide multiple functions:
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Protecting the electrical distribution system or specific applications
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Metering instantaneous values, metering demand values for electrical quantities
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Kilowatt hour metering
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Operating information (such as peak demand, customized alarms, and operation counter)
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Communication
For more information, refer to ComPacT NSX – MicroLogic 5/6/7 Electronic Trip Units - User Guide Related Documents.
BSCM Circuit Breaker Status Control Module
The BSCM circuit breaker status control module can be used
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to send the following data via the communication network:
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Circuit breaker states from OF, SD, and SDE auxiliary contacts
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Control instructions for the communicating motor mechanism (if present): opening, closing, and resetting
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Information to assist the operator: storage of the last 10 events
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to indicate the status of the circuit breaker with communicating and non-communicating trip unit through external communications. This requires an external communication module.
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Illustration |
Part number |
Documentation |
|---|---|---|
|
LV434205 |
|
NSX Cord
NSX cords are internal connection blocks used to connect a ComPacT NSX circuit breaker equipped with the BSCM module and/or the MicroLogic 5, 6, or 7 trip unit to a ULP module.
 WARNING |
|---|
|
HAZARD OF ELECTRIC SHOCK
For system voltage greater than 480 Vac:
Failure to follow these instructions can result in death, serious injury, or equipment
damage.
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The NSX cord is suited to applications less than 480 Vac. It is available in three cable lengths and terminates with a RJ45 plug connector for direct connection to a ULP module.
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Illustration |
Length |
Part number |
Documentation |
|---|---|---|---|
|
L = 0.35 m (1.15 ft) |
LV434200 |
|
|
|
L = 1.3 m (4.3 ft) |
LV434201 |
||
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L = 3 m (9.8 ft) |
LV434202 |
Lengths up to 5 m (16.4 ft) are possible by using RJ45 socket/socket connectors.
Isolated NSX Cord
For system voltages greater than 480 Vac, using an insulated NSX cord is mandatory. This is to ensure data integrity on ULP network. The insulated NSX cord is an isolated variant of the NSX cord, terminated by an electronic module with a RJ45 socket connector. Use an RJ45 plug/plug ULP cord to connect the isolated electronic module of the NSX cord to a ULP module.
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Illustration |
Length |
Part number |
Documentation |
|---|---|---|---|
|
L = 1.3 m (4.3 ft) |
LV434204 |
|
The electronic module of the isolated NSX cord must be powered by a 24 Vdc power supply so that the ULP system is isolated.
The following table summarizes the electronic module characteristics:
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Characteristic |
Value |
|---|---|
|
Dimensions |
27 x 27 x 27 mm (1 x 1 x 1 in) |
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Mounting |
On DIN rail |
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Degree of protection of the installed module |
|
|
Operating temperature |
-25 °C to +70 °C (-13 °F to +158 °F) |
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Power supply voltage |
24 Vdc -20%/+10% (19.2–26.4 Vdc) |
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Consumption |
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Connection to the ULP System with NSX Cord
The following figures show connection of the ComPacT NSX circuit breaker to the IMU with the NSX cord.
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ComPacT NSX circuit breaker with MicroLogic 5, 6, or 7 trip unit |
ComPacT NSX circuit breaker with BSCM module |
ComPacT NSX circuit breaker with BSCM module and MicroLogic 5, 6, or 7 trip unit |
|---|---|---|
Connection to the ULP System with Isolated NSX Cord
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A |
IFM Modbus-SL interface for one circuit breaker |
|
B |
ULP line termination |
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C |
RJ45 plug/plug ULP cord |
|
D |
Insulated ULP module for system voltage greater than 480 Vac |
|
E |
Circuit breaker ULP cord for system voltage greater than 480 Vac |
|
F |
Connector for ComPacT NSX circuit breaker internal connection |