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Installation instructions
EN Surge Protective Device
Item no.
Type
5093 509
V50-0-320
5093 540
V50-1-320
5093 542
V50-3-320
5093 552
V50-1+NPE-320
5093 554
V50-3+NPE-320
5093 546
V50-1+FS-320
5093 548
V50-3+FS-320
5093 560 V50-1+NPE+FS-320 Single-pole with NPE/FS L – N, N – PE 80 kA
5093 562 V50-3+NPE+FS-320 Three-pole with NPE/FS L – N, N – PE 80 kA
5095 609
C50-0-255
*
Figure
1
Product description
Lightning current and surge protection device for
equipotential bonding of power supply systems
according to VDE 0100-443 (IEC 60364-4-44)
and for lightning protection equipotential bonding
according to VDE 0185-305 (IEC 62305). For
mounting on hat rails and use in distributor hous-
ings. Arresters (Figure
individually and are encoded on the rear side, in
order to avoid incorrect connection. They pos-
sess a thermodynamic cut-off unit and have an
arresting capacity of up to 50 kA (8/20) and
12.5 kA (10/350) per pole.
If there is an error, the visual display switches
from grey to red (Figure
With snap-on hat rail bracket (Figure
The spark gap C50-0-255 is intended as an ar-
rester between the neutral conductor N and the
protective conductor (PE conductor).
Only V50-..+FS..: With module for remote sig-
nalling through potential-free changeover contact
(Figure
).
Target group
The device may only be mounted and connected
by an electrical technician.
General safety information
• Before working on power cables, ensure that
they are de-energised and secure them against
unintentional switch-on!
• Do not carry out mounting work during a storm!
• Comply with national laws and standards, e.g.
VDE 0100-534 (IEC 60364-5-53)!
OBO Bettermann GmbH & Co. KG
Product
Single arrester*
Single pole
Three-pole
Single-pole with NPE
Three-pole with NPE
Single-pole with FS
Three-pole with FS
Single arrester*
) can be connected
1
).
).
2
Protection
I
I
path
Total 8/20
Total 10/350
–
–
L – PE/N
–
L – PE/N
120 kA 37,5 kA ≤ 500 µA
L – N, N – PE 80 kA
L – N, N – PE 80 kA
L – PE/N
–
L – PE/N
120 kA 37,5 kA ≤ 500 µA
–
–
Mounting and installation
The device can be installed in any position (e.g.
vertical or horizontal).
Figure
: VDE 0100-534 (IEC 60364-5-53)
specifies that,
– in the case of single-branch wiring,
connection length a + b
– or, in the case of V wiring,
length c
should never exceed 0.5 m.
For V wiring, use the connection terminal, item
no. 5012 010.
Caution! Risk of overloading!
The connection terminal 5012 010 is
approved for a maximum current load ≤ 50
A.
Use a suitable back-up fuse!
• Clamp the protection device onto the hat rail,
ensuring that the lockable hat rail holder is un-
locked (Figure
).
2
• Maintain the stripping length and tightening
torque (Figure
).
• Connection according to the circuit diagram
(TN systems or TN-S / TT systems).
V50-...-320
Circuit
diagram
I
PE
Figure
–
–
–
–
≤ 500 µA
1
3
25 kA
≤ 5 µA
5
50 kA
≤ 5 µA
7
–
≤ 500 µA
1
3
25 kA
≤ 5 µA
5
50 kA
≤ 5 µA
7
–
–
the total
1
the connection
2
EN
8
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