Connecting The Devices - Siemens Sentron 7KN POWERCENTER 1000 Manual

The 3NA COM electronic module does not require a separate power connection. It supplies
itself from the primary current via the current transformer according to the Energy Harvesting
principle, however, it requires a minimum current of 5 A for this purpose.
Note
The gFF operating class is only approved for the Netherlands. The relevant installation
specifications apply.
In the event that the fuse link has switched off following a short-circuit or an overload, the
fuse link must be replaced. Remove the LV HRV 3NA COM fuse link and the electronic module
out of the device, pull the electronic module down off the contact blade and re-insert the
electronic module on to the new 3NA COM fuse link in reverse order. The LV HRV 3NA COM
fuse link can also be ordered separately.
The electronic module can be reused under certain circumstances, but this must be checked
after recommissioning.
4.3

Connecting the devices

The 5SL6 COM miniature circuit breaker and 5SV6 COM arc fault detection device have an
integrated power supply unit for the electronics. Therefore, the phase and N-conductor
(230 V AC) must be connected.
The 7KN Powercenter 1000 and 5ST3 COM auxiliary switch/fault signal contact are supplied
using an extra-low-voltage of 24 V DC (SELV). The screwless connection terminals of both
devices enable a loop-through (Daisy chain) of the supply voltage.
The 3NA COM fuses are supplied via Energy Harvesting from the main circuit and therefore
do not require any additional wiring to the connections made as standard.
Danger due to fire or electric shock.
May cause death, serious personal injury, or equipment damage.
Only use leads that correspond to the local safety regulations.
Circuit protection devices with communication and metering function
System Manual, 06/2021, L1V30827018B-01
WARNING
Installation and connection
4.3 Connecting the devices
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