Din Rail Power Supply
Din Rail Power Supply is typically the term used to
describe a dc power supply which can be mounted on din
rail. A din rail power supply is often used within a
control panel or automation system and has distinct
advantages over a traditional chassis mounted power
supply in that it can be both mounted and uninstalled
very quickly. The clips on the back of the din rail
power supply often have a slot for a flat blade screw
driver and can be quickly unclipped from the din rail
to facilitate fast change-over of product if required.
 Mounting
of a din rail power supply is also extremely simple
in that the product is simply placed at a slight angle
on the din rail and then clicked backwards into place.
This is ease of mounting speeds up control panel manufacture
which is why products which mount on din rail are often
preferred in the control and automation sector The spring
loaded din rail clips which hold the power supply onto
the din rail ensure it is kept in place unless deliberately
unclipped.
The most common voltage configuration for a din rail
power supply is mains input (either 90-264Vac autoranging
or 110/230Vac switch selectable) and 24Vdc output, although
simplypowersupplies.com also offer din rail power supplies
in 5Vdc, 12Vdc, and 48Vdc output variants. The last
few years has also seen the introduction of din rail
dc to dc converters with dc inputs from 24 to 110Vdc
and output in 24vdc, 48Vdc and 60Vdc variants.
Simplypowersupplies.com offer din rail power supplies
from a number of manufacturers including Taiwanese based
Reign Power Ltd, and Meanwell Enterprises Co Ltd, and
the German power supply manufacturing company Zentro-Elektrik
GmbH. At the lower power end of the range (typically
<100W) many of the din rail power supply units have
plastic cases and are suitable for Class II double insulated
applications whilst for power ratings above 100W all
units are housed in aesthetically pleasing aluminium
cases.
Traditionally a din rail power supply would simply
provide a dc output from an ac input but more recently
new products have been introduced which incorporate
redundant functions, current share pins and signal relays
so that remote monitoring systems can detect the failure
of a din rail power supply output. These additional
features are widening market and increasing the number
of applications for which a din rail power supply can
be used.
Mtbf figures for the din rail power supplies offered
by simplypowersupplies range from circa 60,000 hours
for some of the more budget products to more than 200,000
hours for some of the higher quality din rail power
supply units.
For more information please click the AC/DC Power supplies
link on the left of this page and select the Din Rail
Mount tab where you can view the products by output
voltage groupings or select by output voltage range
and current required and the site will provide a selection
of suitable units.
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