Installation Manual
3
1
2
4
（
7
）
The recommended torque setting for terminals is shown as below.
Model
I/P & O/P
DC OK
DRDN20
5.1kgf-cm (4.43Lb-in)
TB1: 4.1kgf-cm (3.54Lb-in)
DRDN40
20.21kgf-cm (17.54 Lb-in)
TB1: 4.1kgf-cm (3.54Lb-in)
TB2: 5.1kgf-cm (4.43Lb-in)
（
8
）
Mounting Instruction
：
Mount as shown in figure only, with input terminals down, or else sufficient cooling will not be possible.
Admissible DIN rail
：
TS35/7.5 or TS35/15
For rail fastening
：
（
a
）
Tilt the unit slightly rearwards.
（
b
）
Fit the unit over top hat rail.
（
c
）
Slide it downward until it hits the stop.
（
d
）
Press against the bottom for locking.
（
e
）
Shake the unit slightly to check the locking action.
（
9
）
For other information about the products, please refer to www.meanwell.com for details.
Typical Application Notes
（
1
）
1+1 Redundancy:
Using 1 more PSU as the redundant unit
"Click"
