Datasheet

≤10 mm
mV
≤10 mm
For further information and full technical data, visit phoenixcontact.net/products
613PHOENIX CONTACT
IEC 60947-7-1/-2
Voltage-drop test
In every terminal point of a terminal
block, one or more conductors are
connected - depending on the connection
technology. Current transfer is strongly
affected by the electrical resistance
between the conductor and the current bar.
High-quality contacts create a gas-tight
connection. This is the only way to ensure a
permanently reliable connection. This
electrical test therefore determines the
voltage drop on a terminal block (two
terminal points). Conclusions regarding the
contact resistance and the contact quality
can therefore be made.
The terminal blocks are wired with the
rated cross section. For measuring
purposes, the terminal blocks are charged
with a direct test current corresponding to
0.1 times the current carrying capacity of
the rated cross section. The voltage drop is
picked off at a distance ≤ 10 mm from the
middle of the terminal point (see diagram).
At a room temperature of ~20°C, the
voltage drop must not exceed 3.2 mV per
terminal block before or after the test, nor
must it exceed 1.5 times the value
measured at the start of the test.
Terminal blocks from Phoenix Contact
are up to 60% below the limit values
required by standards.
Voltage pick-off
on a screw
terminal block
Voltage drop
measuring point
Temperature
measuring point
Voltage drop
measuring point
Rated cross section in Current carrying capacity Rated cross section Current carrying capacity
[mm
2
] [A] AWG [A]
0.2 4 24 4
0.5 6 20 8
0.75 9 18 10
1 13.5 - -
1.5 17.5 16 16
2.5 24 14 22
4 32 12 29
6 41 10 38
10 57 8 50
16 76 6 67
35 125 2 121
50 150 0 162
95 232 0000 217
150 309 00000 309
240 415 500 MCM 415
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