Datasheet

616 PHOENIX CONTACT
Fuse terminal blocks in
compound arrangement
Arrangement with individual
fuse terminal block
Attention:
The cartridge fuse holders should be selected according to the maximum power dissipation (self-heating) of the cartridge fuse-links. The
thermal conditions in closed fuse holders should be checked according to the application and installation.
Higher ambient temperatures are an additional strain on fuse-links. In applications of this kind, the shift of the rated current should be
taken into consideration accordingly.
Max. power dissipation at 23 °C (according to DIN EN 60947-7-3: 2009-4)
When selecting cartridge fuse-links, please ensure that the maximum power dissipation specified below is not exceeded. Details can be obtained from the fuse manufacturers.
5 x 20 mm cartridge fuse-links, according to DIN EN 60947-7-3:2009-4
Technical data on the power dissipation of further fuse terminal block types can be found at phoenixcontact.net/products
1
) The rated operating voltage is determined by the selected cartridge fuse-link.
Terminal block or connector
U
1
) Overload protection Short-circuit protection only I
max.
[V] Individual Compound Individual Compound [A]
P-FU 5 x 20-5 400 1.6 W 1.6 W 4.0 W 2.5 W 6.3
P-FU 5 x 20 400 1.6 W 1.6 W 4.0 W 2.5 W 6.3
PT 4-HESI (5 x 20) 400 1.6 W 1.6 W 4.0 W 2.5 W 6.3
UT 4-HESI (5 x 20) 500 1.6 W 1.6 W 4.0 W 2.5 W 6.3
ST 4-HESI (5 x 20) 500 1.6 W 1.6 W 4.0 W 2.5 W 6.3
ZFK 6-DREHSI (5 x 20) 800 4.0 W 2.5 W 4.0 W 4.0 W 6.3
QTC 2,5-HESI (5 x 20) 500 1.6 W 1.6 W 4.0 W 2.5 W 6.3
UK 10-DREHSI 800 4.0 W 2.5 W 4.0 W 4.0 W 10
USIG with ST-SI 500 2.5 W 2.5 W 4.0 W 4.0 W 6.3
UK-SI 400 1.6 W 1.6 W 4.0 W 2.5 W 6.3
UK 5-HESI 800 2.5 W 2.5 W 4.0 W 2.5 W 6.3
UKK 5-HESI (5 x 20) 400 2.5 W 1.6 W 4.0 W 2.5 W 6.3
UK 4-TG with ST-SI-UK 4 250 1.6 W 1.6 W 4.0 W 1.6 W 6.3
6.3 x 32 mm cartridge fuse-links according to DIN EN 60947-7-3:2009-4
Technical data on the power dissipation of further fuse terminal block types can be found at phoenixcontact.net/products
UT 6-HESI (6,3 x 32) 630 2.5 W 2.5 W 4.0 W 2.5 W 10
ST 4-HESI (6,3 x 32) 500 2.5 W 2.5 W 4.0 W 2.5 W 10
ZFK 6-DREHSI (6,3 x 32) 500 2.5 W 2.5 W 4.0 W 2.5 W 10
UK 10-DREHSI 400 2.5 W 2.5 W 4.0 W 2.5 W 10
USIG with ST1-SI 500 2.5 W 2.5 W 4.0 W 2.5 W 10
UK 6,3-HESI 500 2.5 W 1.6 W 4.0 W 2.5 W 10
UKK 5-HESI (6,3 x 32) 400 2.5 W 1.6 W 4.0 W 2.5 W 10
Block consisting of five fuse
terminal blocks
Block consisting of one fuse
terminal block and four feed-
through terminal blocks
Technical notes - fuse terminal blocks
IEC 60947-7-1/-2
Short-time withstand current
Terminal blocks must, in practice, also be
capable of resisting short-circuit currents
until the relevant safety equipment cuts off
the current without sustaining any damage.
This can take up to several tenths of a
second.
For testing purposes, a terminal block is
mounted on the support and wired to a
conductor with the rated cross section.
Ground terminals are subjected in three
stages of one second each to a current
density of 120 A/mm
2
with the rated cross
section.
The requirements are met if, after the
test, the individual parts are undamaged and
they can still be used.
Before and after the test, the terminal
block must pass the voltage-drop test. The
voltage drop before and after the test must
not exceed 3.2 mV per terminal block nor
must it exceed 1.5 times the value
measured before the test.
In the case of a 240 mm
2
high-current
terminal block from Phoenix Contact, a test
current of 28800 A is passed through the
terminal block for one second without loss
of quality.
Maximum contact reliability, even under
extreme overload – illustrated with a plug-
in spring-cage terminal block
Technical information
Quality tests