Installation instructions
V50-...-280
OBO BETTERMANN GmbH & Co. KG
8
EN
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
1
) can be connected
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 40 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
2
).
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 (HD 60364-5-534)!
Mounting and installation
The device can be installed in any position (e.g.
vertical or horizontal).
Figure
: VDE 0100-534 (HD 60364-5-534)
specifies that,
– in the case of single-branch wiring,
1
the total
connection length a + b
– or, in the case of V wiring,
2
the connection
length c
should ideally not exceed 0.5 m, but never ex-
ceed 1.0 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!
EN
Surge protection device
Item no.
Type
Product
Protection
path
I
Total 8/20
I
Total 10/350
Circuit
diagram
5093 508
V50-0-280
Single arrester*
–
–
–
–
5093 511
V50-3-280
Three-pole
L – PE/N
120 kA
37.5 kA
1
5093 513
V50-4-280
Four-pole
L – PE, N – PE
160 kA
50 kA
2
5093 522
V50-1+NPE-280
Single-pole with NPE
L – N, N – PE
50 kA
50 kA
1
5093 524
V50-2+NPE-280
Two-pole with NPE
L – N, N – PE
50 kA
50 kA
2
5093 526
V50-3+NPE-280
Three-pole with NPE
L – N, N – PE
50 kA
50 kA
3
5093 516
V50-3+FS-280
Three-pole with FS
L – PE/N
120 kA
37.5 kA
1
5093 518
V50-4+FS-280
4-pole with FS
L – PE, N – PE
160 kA
50 kA
2
5093 531 V50-1+NPE+FS-280 Single-pole with NPE/
FS
L – N, N – PE
50 kA
50 kA
1
5093 533 V50-3+NPE+FS-280 Three-pole with NPE/
FS
L – N, N – PE
50 kA
50 kA
3
5095 609
C50-0-255
Single arrester*
–
–
–
–
*
Figure
1
