819XX_MAN_GRM-H_11-2022_ENG_pag. 6
Use the extra-rapid fuse shown in the catalogue
according to the connection example supplied.
Applications with uninterruptible power supply
units must also include a safety circuit breaker
for disconnecting the power line from the load.
To obtain high device reliability, it is essential
to install it correctly inside the panel in order to
obtain adequate heat exchange between the
heat sink and the surrounding air under condi-
tions of natural convection.
Mount the device vertically (maximum 10° incli-
nation from the vertical axis)
•
Vertical distance between a device and the
panel wall >100mm
Horizontal distance between a device and the
panel wall at least 20mm
Vertical distance between one device and
another at least 100mm.
Horizontal distance between one device and
another at least 20mm (in the event of installa-
tion at shorter distances, see derating curves).
Make sure that the cable ducts do not reduce
these distances; in this case, mount the units
overhanging the panel, so that the air can flow
vertically on the heat sink without hindrance.
limitations of use
•
Ambient temperature limits, depending on der-
ating curves.
•
Need for air exchange with the outside or an air
conditioner to transfer the dissipated power to
the outside of the panel.
•
Installation limits (distances between devices
to ensure dissipation under natural convection
conditions)
•
Maximum voltage limits and derivative of the
transients present on the line, for which the
static unit provides internal protection devices
(depending on the models).
•
Presence of leakage current < 3mA (max.
value with nominal voltage and junction tem-
perature of 125°C / 257°F).
1.2. Installation
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