Under normal operating conditions, direct
clamping (i.00 60999-1:2000/
IEC 60999-1:1999, Section 7.64 12.8 20.16 22.07 60204-1:2006 /
IEC 60204-1:2016, Section 13.82 30.6.
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.57
300 23.9 15.
One Conductor per Clamping Unit
A number DIN VDE, EN, IEC directives
mandate recommend that only one con-
ductor must connected per clamping unit.1 1/0 9.wago.
WAGO rail-mount terminal blocks offer differ-
ent solutions increase the number of
clamping points.
In this case, recommend using either solid
copper conductors fine-stranded copper
conductors with properly crimped, tin-coated
copper ferrules copper pin terminals.1.5
www.com
WAGO Rail-Mount Terminal Block Systems
Technical Information
The IEC 60999-1/EN 60999-1/VDE 0609-1
Specification (Section 7.
• Any conductor size combination can be
connected.1.22
120 14., 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. 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.54 15.17 13.05
240 20.
Anti-splaying methods require terminal
block one size larger than the nominal cross
section the conductor terminated.33
– 4/0 14.12 61439-
1:2011 IEC 61439-1, Section 8.e.1 600 23.03
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.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.68 26.
One conductor per clamping unit therefore
recommended meet the safety require-
ments these relevant specifications.48
185 350 18.08
To defined the
corresponding
product standard
70 13.5 250 15.54
95 12.
• Each conductor clamped independently.
• Where re-wiring required, only the con-
ductor changed removed from the
clamping point, all other conductors remain
safely clamped.05
– 400 19.
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.91, Section 3.1) requires that:
Clamping units must able connect
unprepared conductors.
In accordance with DIN VDE 0611, Part 4,
02.42 24.1.1 2/0 11.3
VDE 0113, Part 06.
Special requirements apply only special
application areas exposed extremely cor-
rosive atmospheres. 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 9.34 19.2 300 16.
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.1
VDE 0660, Part 600, 06.08 17.
The most common way branching one
conductor into two three conductors.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 12.01
150 16.
Ferruled conductor cross sections specified
for individual products are based WAGO’s
Variocrimp square crimping technology.
Occasionally, conductor anti-splaying pro-
tection may required, including various
methods (see illustrations below).6 500 21.
As with solid copper conductors, the fine
strands are crimped into dense inner core.
WAGO offers and 4-conductor terminal
blocks, making additional jumpers unneces-
sary.
