Connecting PowerPacT H-, J-, and L-frame Circuit Breakers to the ULP System

Introduction

Use the NSX cord to connect PowerPacT H-, J-, and L-frame circuit breakers to the ULP system. The PowerPacT H-, J-, and L-frame circuit breaker must have a BSCM circuit breaker status control module and/or a MicroLogic 5 or 6 trip unit.

For more information, refer to PowerPacT H-, J-, and L-frame Circuit Breakers with MicroLogic Trip Units - User Guide Related Documents.

MicroLogic Trip Units

MicroLogic 5 or 6 trip units provide multiple functions:

Protecting the electrical distribution system or specific applications
Metering instantaneous values, metering demand values for electrical quantities
Kilowatt hour metering
Operating information (such as peak demand, customized alarms, and operation counter)
Communication

For more information, MicroLogic 5 and 6 Electronic Trip Units for PowerPacT H-, J-, and L-frame Circuit Breakers - User Guide Related Documents.

BSCM Circuit Breaker Status Control Module

The BSCM circuit breaker status control module can be used

to send the following data via the communication network:
- Circuit breaker states from OF, SD, and SDE auxiliary contacts
- Control instructions for the communicating motor mechanism (if present): opening, closing, and resetting
- Information to assist the operator: storage of the last 10 events
to indicate the status of the circuit breaker with communicating and non-communicating trip unit through external communications. This requires an external communication module.

Description	Part number	Documentation
Replacement BSCM module	S434205	Instruction sheet: 48940-322-01 PowerPacT H-, J-, and L-frame Circuit Breakers with MicroLogic Trip Units - User Guide
BSCM module with NSX cord 1.3 m (4.3 ft), ≤480 Vac	S434201BS	PowerPacT H-, J-, and L-frame Circuit Breakers with MicroLogic Trip Units - User Guide Related Documents
BSCM module with NSX Cord 3 m (9.8 ft), ≤480 Vac	S434202BS

NSX Cord

NSX cords are internal connection blocks used to connect a PowerPacT H-, J-, and L-frame circuit breaker equipped with the BSCM module and/or the MicroLogic 5 or 6 trip unit to a ULP module.

WARNING
HAZARD OF ELECTRIC SHOCK For system voltage greater than 480 Vac: Use the insulated NSX cord S434204, S434303, or S434305. Do not use NSX cords S434201 and S434202. Failure to follow these instructions can result in death, serious injury, or equipment damage.

The NSX cord is suited to applications less than 480 Vac. It is available in two cable lengths and terminates with a plug RJ45 connector for direct connection to a ULP module.

Illustration	Length	Part number	Documentation
	L = 1.3 m (4.3 ft)	S434201	Instruction sheet: 48940-323-01 PowerPacT H-, J-, and L-frame Circuit Breakers with MicroLogic Trip Units - User Guide
	L = 3 m (9.8 ft)	S434202

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 to ensure data integrity on ULP network. The insulated NSX cord is an isolated variant of the NSX cord, terminated with an electronic module with a socket RJ45 connector. Use an RJ45 plug/plug ULP cord to connect the isolated electronic module of the NSX cord to a ULP module.

Length	Part number	Documentation
L = 1.3 m (4.3 ft)	S434204	Instruction sheet: S1A80372 PowerPacT H-, J-, and L-frame Circuit Breakers with MicroLogic Trip Units - User Guide
L = 3 m (9.8 ft)	S434303
L = 4.5 m (14.7 ft)	S434305

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:

Characteristic	Value
Dimensions	27 x 27 x 27 mm (1 x 1 x 1 in)
Mounting	On DIN rail
Degree of protection of the installed module	On the front panel (wall-mounted enclosure): IP40 On the connections (behind the enclosure door): IP20
Operating temperature	-25 °C to +70 °C (-13 °F to +158 °F)
Power supply voltage	24 Vdc -20%/+10% (19.2–26.4 Vdc)
Consumption	Typical: 20 mA/24 Vdc at 20 °C (68 °F) Maximum: 30 mA/19.2 Vdc at 60 °C (140 °F)

Connection to the ULP System with NSX Cord

The following figures show connection of the PowerPacT H-, J-, and L-frame circuit breaker to the IMU with the NSX cord.

PowerPacT L-frame circuit breaker with BSCM module, and standard MicroLogic trip unit	PowerPacT H- or J-frame circuit breaker with BSCM module, and standard MicroLogic trip unit	PowerPacT H- or J-frame circuit breaker with BSCM module, and MicroLogic 5 or 6 trip unit
A NSX cord B BSCM module C MicroLogic 2 or 3 trip unit	A NSX cord B BSCM module C MicroLogic 2 or 3 trip unit	A NSX cord B BSCM module C MicroLogic 5 or 6 trip unit

Connection to the ULP System with Isolated NSX Cord

The following figure shows connection of the PowerPacT H-, J-, and L-frame circuit breaker to the IMU with the isolated NSX cord:

A	IFM Modbus-SL interface for one circuit breaker
B	ULP line termination
C	RJ45 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 PowerPacT H-, J-, and L-frame circuit breaker internal connection