Siemens SENTRON 7KN POWERCENTER 3000 User manual

Circuit protection devices with communication and metering
function
SENTRON
Circuit protection devices with
communication and metering
function
System Manual
06/2021
L1V30827018B
-01
Introduction
1
Safety instructions
2
Circuit protection devices
with communication and
metering function
3
Installation and connection
4
Commissioning
5
Functions
6
Application examples
7
Service and maintenance
8
FAQs
9
Technical specifications
10
Dimension drawings
11
Circuit diagrams
12
ESD guidelines
A
List of abbreviations
B

Siemens AG
Smart Infrastructure
Electrical Products
Postfach 10 09 53
93009 Regensburg
GERMANY
Ⓟ
08/2021 Subject to change
Copyright © Siemens AG 2021.
All rights reserved
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.

Circuit protection devices with communication and metering function
System Manual, 06/2021, L1V30827018B-01 3
Table of contents
1 Introduction........................................................................................................................................... 7
1.1 Reference documents .......................................................................................................... 7
1.2 Technical Support ................................................................................................................ 7
1.3 Advanced training courses ................................................................................................... 8
2 Safety instructions................................................................................................................................. 9
2.1 Security information ............................................................................................................ 9
2.2 Open Source Software ....................................................................................................... 10
2.3 User policy for mobile devices ............................................................................................ 11
2.4 Five safety rules for working in or on electrical systems ...................................................... 12
3 Circuit protection devices with communication and metering function ............................................ 13
3.1 7KN POWERCENTER 1000 .................................................................................................. 14
3.2 5ST3 COM auxiliary switch and fault signal contact ............................................................ 15
3.3 5SL6 COM miniature circuit breaker ................................................................................... 16
3.4 5SV6 COM arc fault detection device.................................................................................. 16
3.5 3NA COM fuse ................................................................................................................... 17
4 Installation and connection................................................................................................................. 19
4.1 Preparing installation......................................................................................................... 20
4.1.1 Checking delivery .............................................................................................................. 20
4.1.2 Identification of circuit protection devices .......................................................................... 21
4.1.2.1 Manufacturer identification ............................................................................................... 22
4.1.2.2 User identification ............................................................................................................. 23
4.1.3 Installation conditions........................................................................................................ 24
4.1.4 Permitted ambient conditions ............................................................................................ 25
4.2 Device installation ............................................................................................................. 26
4.2.1 Install the 7KN POWERCENTER 1000................................................................................... 26
4.2.2 Install 5ST3 COM auxiliary switch and fault signal contact .................................................. 27
4.2.3 The 5SL6 COM miniature circuit breaker and 5SV6 COM arc fault detection device.............. 28
4.2.4 Install 3NA COM fuse ......................................................................................................... 28
4.3 Connecting the devices...................................................................................................... 29
4.3.1 Connecting the 7KN POWERCENTER 1000 and 5ST3 COM auxiliary switch and fault
signal contact .................................................................................................................... 30
4.3.2 Connecting the 5SL6 COM miniature circuit breaker and 5SV6 COM arc fault detection
device................................................................................................................................ 32
4.4 Interfaces of the 7KN POWERCENTER 1000......................................................................... 32
4.4.1 Ethernet interface.............................................................................................................. 32
4.4.2 Bluetooth interface ............................................................................................................ 33
4.4.3 Radio interface to the devices ............................................................................................ 34

Table of contents
Circuit protection devices with communication and metering function
4System Manual, 06/2021, L1V30827018B-01
4.5 Operation of the SENTRON circuit protection devices.......................................................... 35
4.6 LED signaling of the SENTRON circuit protection devices .................................................... 37
5 Commissioning .................................................................................................................................... 39
5.1 Commissioning with SENTRON powerconfig app................................................................ 40
5.2 Commissioning with SENTRON powerconfig for PC............................................................. 43
5.3 Removing devices.............................................................................................................. 44
5.3.1 Delete ............................................................................................................................... 44
5.3.2 Decouple........................................................................................................................... 45
5.3.3 Replace.............................................................................................................................. 46
5.3.4 Change communication information.................................................................................. 46
5.4 Summary of 3NA COM fuses with the same name .............................................................. 47
5.5 Import and Export.............................................................................................................. 47
5.6 Commissioning several 7KN POWERCENTER 1000 .............................................................. 49
5.7 Time-Outs ......................................................................................................................... 51
5.7.1 Reclosing........................................................................................................................... 51
5.7.2 Pairing............................................................................................................................... 51
5.8 Use of third-party software ................................................................................................ 52
6 Functions ............................................................................................................................................. 53
6.1 Recorded measured values and storage.............................................................................. 53
6.1.1 Measured value acquisition................................................................................................ 53
6.1.2 Accuracy............................................................................................................................ 54
6.1.3 Measured value transmission frequency............................................................................. 54
6.1.4 Measured value memory.................................................................................................... 55
6.2 Messages .......................................................................................................................... 56
6.2.1 Measured values and upper limit violation ......................................................................... 56
6.2.2 Tripping operations in the event of a fault.......................................................................... 57
6.3 Time synchronization......................................................................................................... 59
6.4 Modbus TCP connection..................................................................................................... 60
6.4.1 Device addressing via Modbus TCP..................................................................................... 61
6.4.2 Protocol information.......................................................................................................... 63
6.4.3 Delayed Response and parallel accesses ............................................................................. 65
6.4.4 Information categories of the SENTRON circuit protection devices ...................................... 66
6.4.4.1 Information on identification ............................................................................................. 67
6.4.4.2 Communication parameters IP ........................................................................................... 68
6.4.4.3 Bluetooth communication parameters ............................................................................... 69
6.4.4.4 Communication parameter radio........................................................................................ 69
6.4.4.5 Communication information radio ..................................................................................... 70
6.4.4.6 Measured and state variables............................................................................................. 70
6.4.4.7 Measurement settings ....................................................................................................... 71
6.4.4.8 Diagnostic information ...................................................................................................... 74
7 Application examples .......................................................................................................................... 77
8 Service and maintenance .................................................................................................................... 79
8.1 Repair instructions ............................................................................................................. 79

Table of contents
Circuit protection devices with communication and metering function
System Manual, 06/2021, L1V30827018B-01 5
8.2 Firmware update ............................................................................................................... 79
8.3 Disposal of waste electronic equipment ............................................................................. 81
9 FAQs..................................................................................................................................................... 83
9.1 Error on commissioning ..................................................................................................... 83
9.2 Error with Modbus TCP connection..................................................................................... 85
9.3 Error with firmware update................................................................................................ 85
10 Technical specifications....................................................................................................................... 87
10.1 7KN POWERCENTER 1000 .................................................................................................. 87
10.2 5ST3 COM auxiliary switch and fault signal contact ............................................................ 88
10.3 5SL6 COM miniature circuit breaker ................................................................................... 89
10.4 5SV6 COM arc fault detection device.................................................................................. 91
10.5 3NA COM fuse ................................................................................................................... 93
11 Dimension drawings............................................................................................................................ 95
11.1 7KN POWERCENTER 1000 .................................................................................................. 95
11.2 5ST3 COM auxiliary switch and fault signal contact ............................................................ 96
11.3 5SL6 COM / 5SV6 COM miniature circuit breaker and arc fault detection device .................. 97
11.4 3NA COM fuse ................................................................................................................... 98
12 Circuit diagrams................................................................................................................................... 99
12.1 7KN POWERCENTER 1000 .................................................................................................. 99
12.2 5ST3 COM auxiliary switch and residual current switch..................................................... 100
12.3 5SL6 COM miniature circuit breaker ................................................................................. 100
12.4 5SV6 COM arc fault detection device................................................................................ 101
12.5 3NA COM fuse ................................................................................................................. 101
A ESD guidelines ................................................................................................................................... 103
A.1 Electrostatic sensitive devices (ESD) ................................................................................. 103
B List of abbreviations .......................................................................................................................... 105
Index.................................................................................................................................................. 107

Table of contents
Circuit protection devices with communication and metering function
6System Manual, 06/2021, L1V30827018B-01

Circuit protection devices with communication and metering function
System Manual, 06/2021, L1V30827018B-01 7
Introduction
1
1.1 Reference documents
You can find more information in the following documents:
Title
Article number
Circuit protection devices with communication and metering function
Installation Instructions
(https://support.industry.siemens.com/cs/ww/en/view/109791805)
L1V30827020A
7KN POWERCENTER 1000
Operating Instructions
(https://support.industry.siemens.com/cs/ww/en/view/109793297)
L1V30610178A
5ST3 COM auxiliary switch and fault signal contact
Operating Instructions
(https://support.industry.siemens.com/cs/ww/en/view/109793296)
3338214103
5SL6 COM miniature circuit breaker
Operating Instructions
(https://support.industry.siemens.com/cs/ww/en/view/109793301)
3355484128
5SV6 COM arc fault detection device
Operating Instructions
(https://support.industry.siemens.com/cs/ww/en/view/109793300)
3355484127
3NA COM electronic module
Operating Instructions
(https://support.industry.siemens.com/cs/ww/en/view/109793298)
2568024102
7KN POWERCENTER 3000
Equipment Manual
(https://support.industry.siemens.com/cs/ww/en/view/109763838)
L1V30579222004
1.2 Technical Support
You can find further support on the Internet at:
TechnicalSupport (https://www.siemens.com/support-request)

Introduction
1.3 Advanced training courses
Circuit protection devices with communication and metering function
8System Manual, 06/2021, L1V30827018B-01
1.3 Advanced training courses
Find out about training courses on offer on the following link.
Training for Industry (https://www.siemens.de/sitrain-lowvoltage)
Here you can choose from:
•Web-based training courses (online, informative, free)
•Classroom training courses (course attendance, comprehensive, subject to fee)
You also have the possibility of compiling your own training portfolio via Learning paths.

Circuit protection devices with communication and metering function
System Manual, 06/2021, L1V30827018B-01 9
Safety instructions
2
2.1 Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, systems, machines and networks.
In order to protect plants, systems, machines and networks against cyber threats, it is
necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial
security concept. Siemens’ products and solutions constitute one element of such a concept.
Customers are responsible for preventing unauthorized access to their plants, systems,
machines and networks. Such systems, machines and components should only be connected
to an enterprise network or the Internet if and to the extent such a connection is necessary
and only when appropriate security measures (e.g. firewalls and/or network segmentation)
are in place.
For additional information on industrial security measures that may be implemented, please
visit (https://www.siemens.com/industrialsecurity).
Siemens’ products and solutions undergo continuous development to make them more
secure. Siemens strongly recommends that product updates are applied as soon as they are
available and that the latest product versions are used. Use of product versions that are no
longer supported, and failure to apply the latest updates may increase customer's exposure to
cyber threats.
To keep up to date with all the latest product updates, subscribe to the Siemens Industrial
Security RSS Feed at (https://www.siemens.com/industrialsecurity).

Safety instructions
2.2 Open Source Software
Circuit protection devices with communication and metering function
10 System Manual, 06/2021, L1V30827018B-01
2.2 Open Source Software
This product, solution or service ("Product") contains third-party software components. These
components are Open Source Software licensed under a license approved by the Open
Source Initiative (https://www.opensource.org) or similar licenses as determined by SIEMENS
("OSS") and/or commercial or freeware software components. With respect to the OSS
components, the applicable OSS license conditions prevail over any other terms and
conditions covering the Product. The OSS portions of this Product are provided royalty-free
and can be used at no charge.
If SIEMENS has combined or linked certain components of the Product with/to OSS
components licensed under the GNU LGPL version 2 or later as per the definition of the
applicable license, and if use of the corresponding object file is not unrestricted ("LGPL
Licensed Module", whereas the LGPL Licensed Module and the components that the LGPL
Licensed Module is combined with or linked to is the "Combined Product"), the following
additional rights apply, if the relevant LGPL license criteria are met: (i) you are entitled to
modify the Combined Product for your own use, including but not limited to the right to
modify the Combined Product to relink modified versions of the LGPL Licensed Module, and
(ii) you may reverse-engineer the Combined Product, but only to debug your modifications.
The modification right does not include the right to distribute such modifications and you
shall maintain in confidence any information resulting from such reverse-engineering of a
Combined Product.
Certain OSS licenses require SIEMENS to make source code available, for example, the GNU
General Public License, the GNU Lesser General Public License and the Mozilla Public License.
If such licenses are applicable and this Product is not shipped with the required source code, a
copy of this source code can be obtained by anyone in receipt of this information during the
period required by the applicable OSS licenses by contacting the following address:
Siemens AG
Smart Infrastructure
Electrical Products
Technical Support
Postfach 10 09 53
93009 Regensburg
Germany
You will find Technical Support under (https://www.siemens.com/support-request).
Keyword: Open Source Request (please specify Product name and version, if applicable)
SIEMENS may charge a handling fee of up to 5 EUR to fulfil the request.
Warranty regarding further use of the Open Source Software
SIEMENS' warranty obligations are set forth in your agreement with SIEMENS. SIEMENS does
not provide any warranty or technical support for this Product or any OSS components
contained in it if they are modified or used in any manner not specified by SIEMENS. The
license conditions may contain disclaimers that apply between you and the respective
licensor. For the avoidance of doubt, SIEMENS does not make any warranty commitment on
behalf of or binding upon any third-party licensor. The Open Source Software used in the
product and the license agreements concerning this software can be found in the
Readme_OSS.

Safety instructions
2.3 User policy for mobile devices
Circuit protection devices with communication and metering function
System Manual, 06/2021, L1V30827018B-01 11
2.3 User policy for mobile devices
Tips for customers using mobile devices
A wide range of applications can be installed on mobile devices. A certain cyber security risk
is associated with the use of these devices. The following information will allow the user to
use the apps with the highest possible degree of cyber security.
What can go wrong?
The use of mobile devices increases the risk of data loss and data theft in different ways.
Typical situations include:
•Loss or theft of devices, e.g. in the hotel room, on the airplane, in a rental car or taxi, in
the conference room, in the lobby or during breaks.
•Leaving the mobile device in unsuitable hands. If children are allowed to play with the
device, they can inadvertently perform operations or change configuration settings.
•Reading information off the screen or eavesdropping on conversations. When you are in
public, you should be conscious of the fact that other people can be watching you or
listening to you, thereby obtaining information which could damage your company, your
customers, your business partners or colleagues.
How can I stay cyber safe?
•Use a virtualization software to separate private and business affairs in your mobile
device.
•Activate security mechanisms, such as the PIN for your tablet, smartphone or mobile
phone and the password for your laptop.
•Use passwords that cannot easily be guessed to protect your mobile device.
•When entering passwords, make sure that nobody is watching.
•Keep the operating system and the installed applications up to date.
•Mobile devices must be protected against malware and other threats. For this reason, no
unnecessary apps and no apps from unknown origins should be installed. A malware
scanner should also be installed if possible.
•Lock your mobile device as soon as you have finished using it.
•Every time you install an app, make sure to check which permissions the app requires. For
example, a flashlight function does not require access to the Internet or your contacts.
Never use unprotected Internet access, such as WLAN hotspots in airport lounges, hotels,
conference centers, restaurants or cafés.
•It is imperative that you use a VPN solution every time you set up a connection to the
World Wide Web.
•If possible, set up device tracking for your mobile device so that it can be found, or even
locked, if it gets lost. This function varies from one mobile device to the other.
•Do you know your service provider's emergency number? You can ask your provider to
lock your device or perform a remote wipe in the event of an emergency.

Safety instructions
2.4 Five safety rules for working in or on electrical systems
Circuit protection devices with communication and metering function
12 System Manual, 06/2021, L1V30827018B-01
•Deactivate all unnecessary functions. If you do not need GPS tracking, for example, you
can deactivate this function.
•Back up your data regularly. Save your backup to another safe place.
•Employees must be conscious of their responsibilities when it comes to cyber security.
Cyber security training courses are advisable for this reason.
2.4 Five safety rules for working in or on electrical systems
A set of rules, which are summarized in DIN VDE 0105 as the "five safety rules", are defined
for working in or on electrical systems as a preventative measure against electrical accidents:
1. Isolate
2. Secure against re-connection
3. Verify absence of operating voltage
4. Ground and short-circuit
5. Provide protection against adjacent live parts
These five safety rules must be applied in the above order prior to starting work on an
electrical system. After completing the work, proceed in the reverse order.
It is assumed that every electrically skilled person is familiar with these rules.
Explanations
1. The isolating distances between live and de-energized parts of the system must vary
according to the operating voltage that is applied.
"Isolate" refers to the all-pole disconnection of live parts.
All-pole disconnection can be achieved, e.g. by.:
- Switching off the miniature circuit breaker
- Switching off the motor circuit breaker
- Unscrewing fusible links
- Removing LV HRC fuses
2. The feeder must be locked against inadvertent reconnection to ensure that it remains
isolated for the duration of the work. This can be achieved, for instance, by locking the
motor and system circuit breakers in the OFF position or by unscrewing the fuses and using
lockable elements to prevent them from being reinserted.
3. The de-energized state of the equipment should be verified using suitable test equipment,
e.g. a two-pole voltmeter. Single-pole test pins are not suitable for this purpose. The
absence of power must be established for all poles, phase to phase, and phase to N/PE.
4. Grounding and short-circuiting are only mandatory if the system has a nominal voltage
greater than 1 kV. In this case, the system should always be grounded first and then
connected to the live parts to be short-circuited.
5. These parts should be covered, or barriers erected around them, to avoid accidental contact
during the work with adjacent parts that are still live.

Circuit protection devices with communication and metering function
System Manual, 06/2021, L1V30827018B-01 13
Circuit protection devices with communication
and metering function
3
Circuit protection devices with communication and metering functions are an integral part of
SENTRON digitalization solutions.
System availability is increased by the early response to warning messages. The protection
functions still offer secure, reliable protection in the final circuit. As a result, the
communication and metering function makes it easier to find the causes during malfunctions
due to reporting the cause of the tripping operation, which in turn allows conclusions to be
drawn about malfunctions of operating equipment. Another advantage is provided by the
integrated operating hour and trip counters, which contribute to improved planning of
maintenance work. In addition, circuit protection devices with a metering and
communication function capture electrical parameters such as energy, active power, current,
voltage, line frequency and temperature. This helps increase transparency and energy
consumption in the final circuits can be broken down.
Due to their compact construction, the circuit protection devices are ideal for the retrofit
market or even new construction. The system can be simply put into operation via the
SENTRON powerconfig PC software or the corresponding SENTRON powerconfig app for
mobile devices.
Further information can be found in the Installation Manual - SENTRON circuit protection
devices with communication and metering function
(https://support.industry.siemens.com/cs/de/en/view/109791805).
The 7KN Powercenter 1000 data transceiver is the core of the system of communication-
capable circuit protection devices. This gathers measured values of the coupled circuit
protection devices and transfers them to the higher level systems. The measured values from
up to 24 communication-capable SENTRON devices are wirelessly transferred to a
7KN Powercenter 1000, which stores selected data for up to 30 days. Higher-level systems
can access the data via the interfaces of the data transceiver. Either on site via Bluetooth or
via Ethernet in the local network. In this case, a Modbus TCP protocol is used, which can
easily be integrated by other systems.

Circuit protection devices with communication and metering function
3.1 7KN POWERCENTER 1000
Circuit protection devices with communication and metering function
14 System Manual, 06/2021, L1V30827018B-01
The system of circuit protection devices with communication and metering function increases
system availability due to increased transparency through to the final circuit through wireless
transmission and storage of measured values.
3.1 7KN POWERCENTER 1000
7KN Powercenter 1000 data transceivers gather data from communication and
measurement-capable 5SL6 COM miniature circuit breakers, 5SV6 COM arc fault detection
devices, 5ST3 COM auxiliary switch and fault signal contacts such as communication-capable
3NA COM fuses.

Circuit protection devices with communication and metering function
3.2 5ST3 COM auxiliary switch and fault signal contact
Circuit protection devices with communication and metering function
System Manual, 06/2021, L1V30827018B-01 15
They communicate wirelessly with up to 24 terminal devices within a switchgear bay or a
distribution board. The recorded data can be accessed via Bluetooth using a mobile terminal
device on site or be forwarded to higher-level systems by means of Modbus TCP. Selected
measured values are stored in the 7KN Powercenter 1000 for up to 30 days and can be
displayed via the Ethernet interface.
Energy flows can be visualized and optimized with the SENTRON powermanager energy
monitoring system. Via the 7KN Powercenter 3000 IoT data platform, the recorded data can
be viewed directly in a web interface or transferred to Cloud applications and evaluated.
The screwless plug-in terminals allow the 24 V DC (SELV) power supply to be looped through
to other devices in the distribution board, and with its 1TE size, the space-saving
7KN Powercenter 1000 enables easy mounting on the DIN rail.
3.2 5ST3 COM auxiliary switch and fault signal contact
5ST3 COM auxiliary switches and fault signal contacts can be used excellently to retrofit
devices, which are not available as communication-capable versions. They are mounted on to
the electromechanical master unit and extended by communication and metering functions
for temperature, switch position and the number of shutdowns.
In order to work in the most space-saving manner, the 5ST3 COM auxiliary switch and fault
signal contact is a measurement and communication-capable add-on module, which only
uses 0.5 TE. This can be mounted on to the series 5SY, 5SP4 and 5SL miniature circuit
breakers and the 5SV residual current operated circuit breaker and 5SV1 and 5SU1 RCBO
switches.
The supply voltage of 24 V DC (SELV) can be bridged to other devices via the screwless plug-
in terminals.

Circuit protection devices with communication and metering function
3.3 5SL6 COM miniature circuit breaker
Circuit protection devices with communication and metering function
16 System Manual, 06/2021, L1V30827018B-01
3.3 5SL6 COM miniature circuit breaker
5SL6 COM miniature circuit breakers do not just protect final circuits like conventional
miniature circuit breakers during overload and short-circuits, they also gather information on
the status and the faults in the electric circuit.
They wirelessly communicate the measured values such as current, voltage, temperature, line
frequency, power, energy, operating hours, tripping operations and switching cycles to the
higher-level 7KN Powercenter 1000 data transceiver. Monitoring of the electric circuit
enables predictive error detection by reporting pre-warnings if, for example, the set limit
value of the current is exceeded.
The device only requires the external and N-conductor connection (230 V AC) and no
additional power supply (24 V DC) for the communication and metering function. With a
width of 1 TE, the 5SL6 COM miniature circuit breaker is as large as conventional, non-
communicating miniature circuit breakers. The 5SL6 COM is designed for nominal currents of
2 ... 32 A and available in the tripping characteristics B and C.
3.4 5SV6 COM arc fault detection device
With the communication-capable 5SV6 COM arc fault detection device, which has the
integrated function of a miniature circuit breaker, the affected final circuit can be protected
with regard to overload, short-circuit and fault arcs.

Circuit protection devices with communication and metering function
3.5 3NA COM fuse
Circuit protection devices with communication and metering function
System Manual, 06/2021, L1V30827018B-01 17
The measured values and states are wirelessly transmitted via the integrated communication
and metering function. Thus, the final circuit can be monitored even further, by e.g. setting a
limit value that sends a warning when a certain current or voltage value is exceeded. This
predictive error detection ensures increased system availability. In addition to the electrical
measured values (current, voltage, frequency, power, energy) of the circuit, values such as
tripping type, temperature, switching cycles or operating cycles are also communicated.
Even here, the 1+N pole design of the switch offers the complete scope of protection,
without additional connections for the communication function. As a result of the compact
size of 1 TE, the 5SV6 COM arc fault detection devices offer a simple exchange of
conventional arc fault detection devices or miniature circuit breakers. Devices with a compact
structure (1+N) can be easily exchanged, for the single-pole devices the neutral conductor
must also be connected. The 5SV6 COM is available for nominal currents of 6 A to 32 A and in
tripping characteristics B and C.
3.5 3NA COM fuse
The 3NA COM fuses with communication and metering function not only protect the circuit,
but also enable early error detection by measuring the current and temperature.
Monitoring of the circuit makes it possible to combat the cause even before the fuse trips by
being able to generate warning messages when the set over-current limit or even the
temperature limit has been exceeded. This contributes towards the avoidance of power
outages, or a reduction of power failures and thus, increases the availability.

Circuit protection devices with communication and metering function
3.5 3NA COM fuse
Circuit protection devices with communication and metering function
18 System Manual, 06/2021, L1V30827018B-01
The 3NA COM fuse is available in size NH2 and operating class gG or gFF. It can be easily
retrofitted in the existing fuse-disconnector due to its standard-compliant dimensions and
auxiliary power. The whole fuse module is composed of an electronic module and a fuse link
with nominal currents between 80 ... 315 A. The fuse link can be easily replaced once the
fuse has been tripped. It is not imperative to renew the electronic module, however, the
functions should be checked after re-commissioning. A test must be performed with a
suitable reference measuring instrument and the exchanged components must be
documented in an appropriate manner (e.g. in the form of a test label and electronic
recording).
The electronic module provides the communication and metering function with an integrated
metering and supply converter, where an additional connection for the supply voltage is not
required. A min. current flow of 5 A is required in order to ensure the communication and
metering function. Together with the fuse link, the electronic module forms the complete
system of the 3NA COM fuse.