New Products

Pluggable DIN Rail Mounted SPD
BLITZDUCTOR ® XT
Lightning current / surge arrester
Max. nominal current at ambient temperature
click
The function-optimised design of the device allows both to safely plug
the protection module into the base part and to remove it without problems.
The module is secured in the base part by snapping it in (audible
click). When pressing the grey buttons, the module can be removed with
little effort. This is ensured by the laminated spring contacts and the
module release spring. A mechanical reverse polarity protection ensures
that the module is installed in the correct position.
2 4
2'4'
1'3'
Nominal current I L in A
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
– 40
Colour-coded characteristic curves:
BXT ML4 / ML2 ...
BE 5 12 24 36 48 60 180
BD 5 12 24 48 60 180
BC 5 24
BE HF 5
BD HF 5 24
– 20 0 20 40 60 80
Ambient temperature in °C
1 3
Up to 4 lines can be connected on 2 levels. For DIN rail mounting purposes,
lines of a pair belonging to each other are connected on top of one
another.
!
LifeCheck module
BXTU ML2 ... S ...
2
4
1 2 3 4 4´ 3´ 2´ 1´
1
3
Base part
BXT BAS 9
If the line shield cannot be earthed on both sides for technical reasons,
one-sided indirect shield earthing might be advisable. This can be performed
by using protection modules of type BXT ML2 ... S. The terminal
3, 3´ is connected to a gas discharge tube which is capable of carrying
lightning currents and prevents compensating currents. Transient impulse
currents on the shield are discharged via indirect shield earthing.
2’
4’
1’
3’
The protected lines always
have to be assigned to terminals
1´ to 4´ (protected) of
the base part. In order not to
reduce the protective effect,
protected and unprotected
lines have to be installed separately.
protected
ok
Earthing module
BXT M4 E
2
4
1 2 3 4 4´ 3´ 2´ 1´
1
3
Base part
BXT BAS 9
2’
4’
1’
3’
The terminals in the base part can be
used with many two-pole modules for
direct or indirect shield earthing. In particular
in bus systems, it is advisable to
use the EMC spring terminal for largearea
connection of line shields.
In case of a stranded cable, unused lines should be laid and earthed. If
the unused lines are connected to base parts, earthing modules of type
BXT M4 E should be used. These reserve space for retrofitting a protection
module and the lines can be integrated efficiently into the equipotential
bonding.
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