En
gl
is
h
(G
B
)
5
27.1 Location
The CU 3X2 is designed for installation in the front of
a control panel or a separate cabinet.
For outdoor installation the CU 3X2 must be
mounted in a control cabinet with an enclosure class
of minimum IPX4.
27.2 Enclosure class
The CU 3X2 is IP54 when mounted in the front of an
IPX4 enclosure. The cabinet must be of a
flame-retardant material.
USA and Canada
The CU 3X2 is type 3R when mounted in the front of
a cabinet with type rating 1, 2, 3, 3R, 5, 12, 12K or
13.
27.3 Terminals
All terminals are suitable for conductors of 0.5 to
2.5 mm
2
or AWG 20-13.
27.4 Cables
Cables must be rated min. 70 °C.
28. Mechanical installation
Fasten the CU 3X2 with the four screws, M5 x 10,
supplied with the unit (pos. 1).
Maximum torque: 1.4 Nm.
Dimensions of the CU 3X2, see section
14. Dimensions
.
Fig. 6
Mounting in panel front (standard)
Connect the earth terminal (between the cable
clamps) on the CU 3X2 to the mounting frame
(pos. 2, fig.
6
). See fig.
7
.
Fig. 7
Earth connection
Warning
Short-circuit protection
The installation must incorporate
external fuses.
EU/IEC:
Use fuses that comply with IEC 60127.
Rated maximum 10 A, minimum
250 VAC in both line and in neutral
when connecting the controller to the
power source.
USA and Canada (branch circuit
protection):
Use a UL/CSA-listed non-time delay,
class-rated Branch Circuit Fuse (such
as class RK5) rated maximum 10 A,
minimum 250 VAC in both line and in
neutral when connecting the controller
to the power source.
TM
03
130
1
410
5
Note
In order to achieve enclosure class
IP54, the CU 3X2 must be mounted in a
panel or cabinet.
TM
04
20
66
19
08
Min. 1.5 mm
Max. 3 mm
66
CU 35
2
