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ALPHA FIX Terminal Blocks
Screw Terminals
General technical specifications
11/49
Siemens ET A1 · 10/2008
11
■
Technical specifications
Continuous load at increased ambient temperatures
To 8WA1 terminal blocks, the full uninterrupted current can be
applied at ambient temperatures of up to +55 °C. At higher am-
bient temperatures, a current reduction according to the follow-
ing formula is required:
The highest permissible clamping point overtemperature of 45 K
specified in IEC 60947-7-1 is not exceeded at an ambient tem-
perature of up to 100 °C.
Standard mounting rails as PEN rails
Only Cu busbars must be used.
They must have the same current carrying capacity as protec-
tive conductor busbars.
PEN busbars must carry only terminals, and no devices.
Standard mounting rail as protective conductor busbar
Protective conductors with a larger cross-section than the pro-
tective conductor busbar and with the same conductivity can be
connected to standard mounting rails that are also protective
conductor busbars and carry current only under fault conditions.
1)
With 8WA1 010-1PQ00 terminal connection of up to 95 mm² finely stranded
or 120 mm² stranded.
Clamping points
1)
Tightening torque also applicable for accessories (socket, link rails, etc.)
I
th2’
=
I
th2
·
k
I
th2
= Uninterrupted current according to selection tables, relative to the
nominal cross-section
I
th2’
= Uninterrupted current at increased ambient temperature
k = Derating factor according to table
Ambient
temperature
Derating factor k
60 °C
0.94
65 °C
0.88
70 °C
0.82
75 °C
0.75
80 °C
0.67
85 °C
0.58
90 °C
0.47
95 °C
0.33
Standard mounting
rail according to
EN 50022-35
and
IEC 60715 TH35
Material
Type
Max. permissible
cross-section
of connected pro-
tective conductor
mm
²
35 × 7.5
Steel
5ST1 141 16
Steel, perforated 5ST1 145 16
Similar to 35 × 15 Steel
5ST1 142 35
Steel
--
50
Copper
8WA7 551 150
1
)
Terminal size
Type
1
)
Thread diameter of
terminal screws
Screwdriver blades
according to DIN 5264
Form B
Tightening torque
= test torque
acc. to DIN VDE 0609
and DIN VDE 0611
Tensile forces
according to
IEC 60947-1
at max.
conductor
connection
Stripped
length
Nm
N
mm
1.5
8WA1 011- . SF. .,
8WA1 011-1EE00
M3.5
0.8 × 4
0.8
40
10
2.5
8WA1 . . 1,
8WA1 011-1BF11,
8WA1 011-1EF . .
8WA1 011- . . F . .
M2.5 and M3
M2.5
0.5 × 3
0.8 × 4
0.5
0.5
50
50
11
11
4
8WA1 011- . . G . .
8WA2 867
M3
M3.5
0.8 × 4
0.5
0.8 ... 1
60
11
6
8WA1 . . 2,
8WA1 011- . . H . .
M3.5
0.8 × 4
0.8
80
11
16
8WA1 . . 4,
8WA1 011- . . K . .
M4
0.8 × 4
1.2
100
13
25
8WA2 868
M5
1.2 × 6.5
2
135
35
8WA1 . . 5,
8WA1 011- . . M . .
8WA2 870
M6
1.2 × 6.5
2.5
2.5 ... 3
190
17
50
8WH1 000-0AN00,
8WH1 000-0AN01,
8WH1 000-0CN07
8WH1 070-0AN00
M6
M6
1.2 × 8
--
6 ... 8
3 ... 7
--
--
24
6 ... 25
70
8WA1 . . 6
M8
4 hexagon socket-head 6
285
25
95
8WA1 010-1PQ00
8WH1 000-0AQ00,
8WH1 000-0AQ01
8WH1 000-0CQ07
8WH1 070-0AQ00
8WH1 060-0AQ00
M8
M8
M8
M8
M8
6 hexagon socket-head
6 hexagon socket-head
6 hexagon socket-head
--
--
15 ... 20
15 ... 20
15 ... 20
6 ... 15
25 ... 30
--
--
--
--
30
33
30
16... 25
29
150
8WH1 000-0AS0.
8WH1 070-0AS00
8WH1 060-0AS00
M10
M10
M10
8 hexagon socket-head
--
--
25 ... 30
10 ... 18
25 ... 30
--
--
--
40
10 ... 18
34
240
8WH1 000-0AU0.
8WH1 060-0AU00
M10
M10
10 hexagon socket-head
--
30 ... 35
30 ... 35
--
--
40
34
© Siemens AG 2008
