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BLITZDUCTOR ® XT Base Part
Pluggable DIN Rail Mounted SPD
BXT BAS
1
3
2
4
12 34
4´ 3´ 2´ 1´
2´
4´
1´
3´
protected
protected
90
BXT ML4...
BXT BAS
1
3
2
4
1 2 3 4 4´ 3´ 2´ 1´
2´
4´
1´
3´
protected
12 7
(2/3 mods.)
28.5
43
• Four-pole version for universal use with
all types of protection modules
• The modules can be plugged in and
removed without signal interruption
• Universal design without protection
elements
Basic circuit diagram with and without plugged-in
module
Dimension drawing BXT BAS
The BLITZDUCTOR XT base part is a very space-saving four-pole universal feed-through terminal for
the insertion of a protection module without signal interruption. The snap-in mechanism at the supporting
foot of the base part allows the protection module to be safely earthed via the DIN rail. As
no components of the protective circuit are situated in the base part, maintenance operation is only
required for the protection modules.
zur Aufnahme einesAbleitermoduls BLITZDUCTOR XT/XTU
Type
BXT BAS
Part No. 920 300
Operating temperature range
-40°C...+80°C
Degree of protection IP 20
For mounting on 35 mm DIN rails acc. to EN 60715
Connection (input / output)
screw / screw
Cross-sectional area, solid 0.08 - 4 mm 2
Cross-sectional area, flexible 0.08 - 2.5 mm 2
Tightening torque (terminals)
0.4 Nm
Earthing via 35 mm DIN rail acc. to EN 60715
Enclosure material polyamide PA 6.6
Colour
yellow
ATEX approvals DEKRA 11ATEX0089 X: II 3 G Ex nA IIC T4 Gc * )
IECEx approvals DEK 11.0032X: Ex nA IIC T4 Gc * )
Approvals
CSA, VdS, UL, GOST
* ) only in connection with an approved arrester module
Clear identification of the
“protected“ side for
faultless installation
Leading/retarded make-before-break
switch contacts
for uninterrupted
removal and insertion without downtime
Module release spring
for removing the protection
module without problems
The earthing foot ensures cost-
effective installation.
No additional
earth connection is required since the
device is safely earthed via the DIN rail.
Lightning current carrying
laminated contacts
Reverse polarity protection prevents
incorrect insertion of the protection
module
Designation space
for marking the circuits
High-quality,
four-pole screw terminals
for the following cross-sections:
stranded:
2.5 mm 2
solid:
4 mm
2
188 www.dehn.de