Voltage drop variation over longer periods
under current load cycling conditions is
shown for WAGO 285‑195 (95 mm²/4/0 AWG)
Rail-Mount Terminal Blocks using solid cop-
per conductors. Therefore, varia-
tion the voltage drop with solid and fine-
stranded conductors small that its influ-
ence may negligible for the practical
application the terminal blocks.2
Voltage drop
per through contact mV
fine-stranded
solid
2.5 mm² mm² mm² mm² mm² mm²
50
45
40
35
30
25
20
15
10
0
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
1050
V1 V3
Voltage drop measured the trough contacts of
rail-mount terminal blocks numbered 1–3
Voltage
drop
per
through
contact
in
mV
(Rail-mount terminal blocks numbered 1–3)
WAGO Rail-Mount Terminal Block Systems
Technical Information
Electrical Tests (continued)
Tests and Testing Procedures per IEC/EN Standards (continued)
• Voltage Drop Test per IEC/EN 60947-7-1
The voltage drop test evaluates clamping point quality under stress such vibration, temperature change, industrial climate and salt spray,
in order verify that the contact point gas-tight.wago.)
Test arrangement: “Voltage Drop Test”
.com
1
__
10
mV
A
Test
I
1
2
3. The diagram shows that the
voltage drop constant, far beyond the 192
cycles required IEC 60947-7-1.
(The voltage drop was determined the
rated current.12
www.
Typical voltage drop variations for solid and fine-stranded conductors 280 285 Series CAGE CLAMP® Rail-Mount terminal Blocks:
Example:
Current load cycling test result for rail-mount terminal blocks (item no. 285-195)
using mm² (4/0 AWG) fine-stranded copper conductors:
The CAGE CLAMP® and Push-in CAGE
CLAMP® connections enclose and contain
fine-stranded conductors
