Installation Manual
3
1
2
4
（
7
）
The recommended torque setting for terminals is shown as below.
Model I/P
O/P
NDR-75
6.9 kgf-cm (6 Lb-in)
6.9 kgf-cm (6 Lb-in)
NDR-120
7.5 kgf-cm (6.5 Lb-in)
7.5 kgf-cm (6.5 Lb-in)
NDR-240
7.5 kgf-cm (6.5 Lb-in)
7.5 kgf-cm (6.5 Lb-in)
NDR-480
10.35 kgf-cm (9 Lb-in)
10.35 kgf-cm (9 Lb-in)
（
8
）
Suggested fuse and maximum number of the PSUs that can be connected to a circuit breaker at 230V are shown
as below.
Model Fuse
Circuit breaker
C16 D16
NDR-75 T3.15A/L250V 6 13
NDR-120 T4A/L250V 5 10
NDR-240 T5A/L250V 4 10
NDR-480 T8A/L250V 3 5
（
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.
（
10
）
For other information about the products, please refer to www.meanwell.com for details.
Warning / Caution !!
（
1
）
Risk of electrical shock and energy hazard. All failure should be examined by a qualified technician. Please do
not remove the case of the power supply by yourself!
（
2
）
Risk of electric arcs and electric shock (danger to life). Connecting both the primary and the secondary sides
together is not allowed.
（
3
）
Risk of burn hazard. Do not touch the unit in operation and shortly after disconnection!
（
4
）
Risk of fire and short circuit. The openings should be protected from foreign objects or dripping liquids.
（
5
）
Only install the unit in a pollution degree 2 environment (Note.1).
（
6
）
Please do not install the unit in places with high moisture or near the water.
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