Installation Manual
3
1
2
4
（
3
）
Use copper wire only, and recommended wires are shown as below.
AWG
18
16
14
12
10
Rated Current of
Equipment (Amp)
6A
6-10A
13-16A
16-25A
25-32A
Cross-section of
Lead(mm
2
)
0.75
1.00
1.5
2.5
4
Note: 1. Current each wire carries should be de-rated to 80% of the current suggested
above when using 5 or more wires connected to the unit.
2. The maximum allowable wire cross-sectional area for the terminal of the
SDR-75 is 12AWG/2.5 mm
2
.
Make sure that all strands of each stranded wire enter the terminal connection and the screw terminals are
securely fixed to prevent poor contact. If the power supply possesses multi-output terminals, please make
sure each contact is connected to wires to prevent too much current stress on a single contact.
（
4
）
Use wires that can withstand temperatures of at least 80°C, such as UL1007.
（
5
）
Recommended wire strapping length is 5mm (0.197
”)
.
（
6
）
Recommended screwdriver is 4mm, slotted type.
（
7
）
The recommended torque setting for terminals is shown as below.
Model
I/P
O/P
SDR-75
6.9 kgf-cm (6 Lb-in)
6.9 kgf-cm (6 Lb-in)
SDR-120
6.3 kgf-cm (5.5 Lb-in)
6.3 kgf-cm (5.5 Lb-in)
SDR-240
10 kgf-cm (9 Lb-in)
10 kgf-cm (9 Lb-in)
SDR-480/480P
10 kgf-cm (9 Lb-in)
8 kgf-cm (7 Lb-in)
SDR-960
10 kgf-cm (9 Lb-in)
8 kgf-cm (7 Lb-in)
（
8
）
Suggested fuse and maximum number of the SDR PSUs that can be connected to a circuit breaker at 230V are
shown as below.
Model
Fuse
Circuit breaker
C16
D16
SDR-75
T3.15A/L250V
10
12
SDR-120
T4A/L250V
7
14
SDR-240
T5A/L250V
4
8
SDR-480
T8A/L250V
4
4
SDR-480P
T8A/L250V
4
4
SDR-960
F10A/H250V
2
2
（
9
）
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.
"Click"
