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Mounting and installation information for junction boxes
3. Overview of the installation areas
Various standard requirements must be fulfilled so that
junction boxes can be installed in specific environments
and that the internal installations do not present a safety
risk.
Example: Living rooms, hotel rooms, attics, etc.
3.1. Protection against direct contact (basic protec-
tion)
Protection according to the standard conditions accord-
ing to DIN VDE 0100-410.
Active parts (alternating current voltages of more than
50 V and direct current voltages of more than 120 V) must
be surrounded by wrapping or arranged behind covers
with a protection rating of at least IP2X. Horizontal top
surfaces of covers or wrapping, which are easily acces-
sible, must correspond to at least the protection rating
IP4X. Covers and wrapping must be securely fastened
and have a sufficient resistance and lifespan, in order
to maintain sufficient distance to active parts under the
normally expected conditions of normal operation and
taking the appropriate external influences into account.
Covers may only be removed with tools.
All the products of OBO Bettermann fulfil these require-
ments.
10
3.2. Rooms with bathtubs or showers according to
DIN VDE 0100-701
Rooms with bathtubs or showers are divided up into
areas, in which only certain devices may be installed.
Areas in rooms with bathtub or shower
Important protection requirements:
The following switching devices, control devices and in-
stallation devices are permitted in the areas:
Area 0
No devices permitted.
Area 1
• Junction boxes and connection boxes for the supply
of electrical consumables, which are permitted in
Areas 0 and 1 according to 701.55;
• Accessories, including sockets, of circuits protected
by low voltages using safety extra-low voltage (SELV
1) or protective extra-low voltage (PELV2) with a
nominal voltage, which does not exceed AC 25 V or
DC 60 V. The current source must be located outside
Areas 0 and 1.
Area 0
Area 1
Area 2
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