1.1 3/0 12.
Other VDE, and IEC specifications also
recommend the connection only one con-
ductor per clamping unit, unless the clamping
unit specifically tested and approved for
the connection several conductors, for
example:
VDE 0609, Part 12.00 60999-1:2000/
IEC 60999-1:1999, Section 7.42 24.
One Conductor per Clamping Unit
A number DIN VDE, EN, IEC directives
mandate recommend that only one con-
ductor must connected per clamping unit.22
120 14.1) requires that:
Clamping units must able connect
unprepared conductors.17 13.6.1.05
240 20.54
95 12.9, multi-level distribution
rail-mount terminal blocks must dimen-
sioned that single (solid, stranded or
fine-stranded) conductor the nominal
cross section can connected each ter-
minal point.01
150 16.
• Each conductor clamped independently.1
VDE 0660, Part 600, 06.48
185 350 18., directly connecting conduc-
tor the terminal block’s current bar) pro-
vides optimal contact quality, because all risk
factors arising from anti-splaying methods
are prevented.
Gas-tight, crimped twin ferrules may used,
provided the ferrule inserted all the way
into the clamping unit and that there suf-
ficient clearance and creepage distance
between adjacent potentials.
The most common way branching one
conductor into two three conductors.1 1/0 9.
Tip-bonded conductor
Ultrasonically bonded conductor
Crimped pin terminal (gas-tight), preferably made cop-
per with tin-plated surface
Tin-plated copper ferrule (gas-tight crimped)
II.5
www.03
Dimensions for Class flexible conductors only (IEC 60228 A)
NOTE: The diameters the largest rigid and flexible conductors are based Table and Table IEC A/IEC
60228 and ASTM B172-71 [1], IECA Publication S-19-81 [2], IECA Publication S-66-524 [3], well IECA Publi-
cation S-66-516 [7] for AWG conductors.
• Where re-wiring required, only the con-
ductor changed removed from the
clamping point, all other conductors remain
safely clamped.1.68 26.
Occasionally, conductor anti-splaying pro-
tection may required, including various
methods (see illustrations below).82 30.com
WAGO Rail-Mount Terminal Block Systems
Technical Information
The IEC 60999-1/EN 60999-1/VDE 0609-1
Specification (Section 7.wago.
WAGO rail-mount terminal blocks offer differ-
ent solutions increase the number of
clamping points.
Anti-splaying methods require terminal
block one size larger than the nominal cross
section the conductor terminated.3
VDE 0113, Part 06.8 20.
As with solid copper conductors, the fine
strands are crimped into dense inner core.1 600 23.e.08
To defined the
corresponding
product standard
70 13.
One conductor per clamping unit therefore
recommended meet the safety require-
ments these relevant specifications.
• Any conductor size combination can be
connected. Per IEC 60999-2, Table 1:
Rated
Cross-
Section
Theoretical Largest Conductor Diameter Connectable
Conductor
Metric AWG/kcmil
Rigid
Stranded
Fine-
Stranded a)
Gauge
Rigid
Stranded
Fine-
Stranded
mm² Rigid Flexible
50 9.54 15.5 250 15.6 500 21.
In this case, recommend using either solid
copper conductors fine-stranded copper
conductors with properly crimped, tin-coated
copper ferrules copper pin terminals.07 60204-1:2006 /
IEC 60204-1:2016, Section 13.
WAGO offers and 4-conductor terminal
blocks, making additional jumpers unneces-
sary.12 61439-
1:2011 IEC 61439-1, Section 8.64 12.
Crimping prevents ingress aggressive
atmospheres (depending the ppm con-
centration), which can diffuse into the con-
ductor bundle along the individual strands
and deposit between individual strands and
the clamping point.
Under normal operating conditions, direct
clamping (i.1 2/0 11.
In accordance with DIN VDE 0611, Part 4,
02.
Special requirements apply only special
application areas exposed extremely cor-
rosive atmospheres.
Ferruled conductor cross sections specified
for individual products are based WAGO’s
Variocrimp square crimping technology.9 15.57
300 23.08 17. This
WAGO principle the basis for number of
other technical and economic advantages:
• Each conductor may terminated or
removed without affecting previously con-
nected conductors.33
– 4/0 14.2 300 16.05
– 400 19.34 19.
.16 22.91, Section 3
