ABB Network Partner AB
Construction and hardware
characteristics - REC 561
Version 1.0-00
1MRK 580 148-XEN
Page 2 - 36
3 Mounting system
The REx 5xx series terminals can be flush, rack, or wall mounted with the
use of different mounting kits. Semi-flush mounting cannot be applied for
this type of terminal, because the ventilation holes will be covered.
All connections are done on the rear side of the case with a screw-com-
pression type of terminal blocks for electrical connections and snap-in
ports for optical connections.
The protection level of the terminal’s top and bottom is IP 30. When
applying flush mounting, the protection level on the front side only of
the terminal is IP 40, and can be increased to IP 54 if a sealing strip (gas-
ket) is used (to be specified when ordering). This sealing strip is placed
between the front cover and the box. This is done during production of the
relay, which means that it must be specified when ordering. The rear side
fulfils IP 20.
A protective cover for the rear side of the unit is available to increase per-
sonal security.
3.1 Mechanical mounting For different types of mountings, special mounting kits are available. All
mounting kits contain assembly instructions.
3.2 Rack mounting For mounting the protection terminal in a 19” rack, mounting angles are
needed. All necessary screw holes in the box are already prepared.
One set of mounting angles for 6U, 19” rack (1MRK 000 020-CA) includ-
ing eight screws (TORX T20) are needed for the rack mounting.
Fig. 6 One REC 561 in a 19” rack
(X80148-6)
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