Electric Auxiliary Devices Summary - ComPacT NSX DC User Guide

Electric Auxiliary Devices for General-Purpose Applications

The following table shows the electric auxiliary devices that can be added to the ComPacT NSX DC circuit breakers for general-purpose applications. For more information, refer to LVPED221002EN ComPacT NSX, ComPacT INS/INV, MasterPacT NW DC - DC PV Catalog.

Electric Auxiliary Device	NSX100 DC			NSX160 DC			NSX250 DC	NSX400 DC	NSX630 DC	NSX1200 DC
Electric Auxiliary Device	1P	2P	3P/4P	1P	2P	3P/4P	3P/4P	3P/4P	3P/4P	2P
OF or SD indication auxiliary (wired or wireless)	–	✔	✔	–	✔	✔	✔	✔	✔	✔
SDE auxiliary contact	–	–	✔	–	–	✔	✔	✔	✔	✔
MN undervoltage trip release	–	✔	✔	–	✔	✔	✔	✔	✔	✔
MX shunt trip release	–	✔	✔	–	✔	✔	✔	✔	✔	✔
BSCM Modbus SL/ULP module	–	–	✔	–	–	✔	✔	✔	✔	✔
SD auxiliary contact for BSCM Modbus SL/ULP module	–	–	✔	–	–	✔	✔	✔	✔	✔
NSX cord	–	–	✔	–	–	✔	✔	✔	✔	✔

Electric Auxiliary Devices for Photovoltaic and Marine Applications

The following table shows the electric auxiliary devices that can be added to the ComPacT NSX DC circuit breakers for photovoltaic and marine applications. For more information, refer to LVPED221002EN ComPacT NSX, ComPacT INS/INV, MasterPacT NW DC - DC PV Catalog.

Electric Auxiliary Device	NSX80-200 DC PV	NSX400-500 DC PV	NSX100-250 DC EP	NSX250-500 DC EP
Electric Auxiliary Device	4P	4P	4P	4P
OF or SD indication auxiliary (wired or wireless)	✔	✔	✔	✔
SDE auxiliary contact	✔	✔	✔	✔
MN undervoltage trip release	✔	✔	✔	✔
MX shunt trip release	✔	✔	✔	✔
BSCM Modbus SL/ULP module	✔	✔	-	-
SD auxiliary contact for BSCM Modbus SL/ULP module	✔	✔	-	-
NSX cord	✔	✔	-	-

Safety Instructions for Photovoltaic Applications

Special care is required when adding electric auxiliary devices into circuit breakers for photovoltaic applications.

DANGER
HAZARD OF ELECTRIC SHOCK, explosion or arc flash Isolate the circuit breaker upstream and downstream before removing the front cover. Always use a properly rated voltage sensing device to confirm that power is off. Replace the front cover before turning on power to this equipment. Failure to follow these instructions will result in death or serious injury.

Electrical Auxiliaries Installation Demonstration Video

For information about installation of ComPacT NSX DC circuit breakers, consult the ComPacT NSX100–250 circuit breakers installation video. To access the video, click the following link: https://youtu.be/zDqRyZHBWr4, or copy and paste the link to your Web browser.

Slots for Electric Auxiliary Devices on ComPacT NSX100/160 DC 2P Circuit Breakers

The following table shows the possible slots for electric auxiliary devices mounted in the case. Only one auxiliary can be installed per slot. For more information, refer to LVPED221002EN ComPacT NSX, ComPacT INS/INV, MasterPacT NW DC - DC PV Catalog.

Electric Auxiliary Device	Slot
Electric Auxiliary Device	A	B	C
OF1 (wired or wireless)	✔	–	–
SD (wired or wireless)	–	✔	–
MN	–	–	✔
MX	–	–	✔

Slots for Electric Auxiliary Devices on ComPacT NSX100-250 DC 3P/4P Circuit Breakers

The following table shows the possible slots for the electric auxiliary devices mounted in the case. Only one auxiliary can be installed per slot. For more information, refer to LVPED221002EN ComPacT NSX, ComPacT INS/INV, MasterPacT NW DC - DC PV Catalog.

Electric Auxiliary Device	Slot					Comments
Electric Auxiliary Device	A	B	C	D	E	Comments
Standard indication and control auxiliaries
OF1 (wired or wireless)	✔	–	–	–	–	For all trip unit types and control types (toggle handle, rotary handle, or motor mechanism).
OF2 (wired or wireless)	–	–	–	✔	–
SD (wired or wireless)	–	✔	–	–	–
SDE (wired or wireless)	–	–	✔	–	–
MN	–	–	–	–	✔
MX	–	–	–	–	✔
Remote indication and communication auxiliaries
BSCM Modbus SL/ULP module	–	–	✔	✔	–	–
SD auxiliary contact for BSCM Modbus SL/ULP module	–	✔	–	–	–	Compatible with the BSCM Modbus SL/ULP module in Modbus SL only mode.
NSX cord	–	✔	–	–	–	For connection of the BSCM Modbus SL/ULP module to ULP modules.

Slots for Electric Auxiliary Devices on ComPacT NSX400–630–1200 DC 3P/4P Circuit Breakers

The following table shows the possible slots for the electric auxiliary devices mounted in the case. For more information, refer to LVPED221002EN ComPacT NSX, ComPacT INS/INV, MasterPacT NW DC - DC PV Catalog.

Electric Auxiliary Device	Slot							Comments
Electric Auxiliary Device	A	B	C	D	E	F	G	Comments
Standard indication and control auxiliaries
OF1 (wired or wireless)		–	✔	–	–	–	–
OF2 (wired or wireless)	–	✔	–	–	–	–	–	For all trip unit types and control types (toggle handle, rotary handle, or motor mechanism).
OF3 (wired or wireless)	✔	–	–	–	–	–	–
OF4 (wired or wireless)	–	–	–	–	–	–	✔
SD (wired or wireless)	–	–	–	–	✔	–	–
SDE (wired or wireless)	–	–	–	–	–	✔	–
MN	–	–	–	✔	–	–	–
MX	–	–	–	✔	–	–	–
Remote indication and communication auxiliaries
BSCM Modbus SL/ULP module	–	–	–	–	–	–	✔	–
SD auxiliary contact for BSCM Modbus SL/ULP module	–	–	–	–	–	–	–	Compatible with the BSCM Modbus SL/ULP module in Modbus SL only mode.
NSX cord	–	–	–	–	–	–	✔	For connection of the BSCM Modbus SL/ULP module to ULP modules.

Operation of the Indication Contacts

The following table shows the position of the indication contacts (or outputs) relative to the position of the actuator and main contacts.

	Position of the actuator and the main contacts
	ON	Tripped by:			OFF
	ON	MN/MX	Push-to-Trip	Trip Unit	OFF
Name	Position of Indication Contacts
OF	✔	–	–	–	–
SD	–	✔	✔	✔	–
SDE	–	–	–	✔	–
✔ : Contact closed – : Contact open

NOTE: The indication (changeover) contacts are represented in the switchboard by the state of the Normally Open (NO) contact.

The state of the NO contact is open:

for OF indication contacts when the circuit breaker is in the O (OFF) position.
for SD and SDE indication contacts when the associated function is not active.

Sequence chart of the OF indication contacts relative to the main contacts

A Main contacts

B Position of OF changeover contacts

Operation of the Wireless Indication Auxiliaries

The wireless indication auxiliary provides the same information as a standard wired indication contact in OF, SD, or SDE positions. The information is sent remotely to a gateway or panel server.

During commissioning of the wireless indication auxiliary, the user defines the type of information sent: Open/Close or Trip.