Installation Manual
3
1
2
4
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8
）
Suggested fuse is shown as below.
Model Fuse
DDR-120A T10A/L250V
x2
DDR-120B T8A/L250V
x2
DDR-120C T8A/L250V
x1
DDR-120D
T4A/L250V x1
DDR-240B
T10A/L250V x2
DDR-240C
T6.3A/L250V x2
DDR-240D
T6.3A/L250V x1
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9
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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.
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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.
（
7
）
The maximum operating temperature is 55°C for DDR-120 series, please do not install the unit in places with
high ambient temperature or near fire source.
（
8
）
The FG (
) must be connected to PE (Protective Earth).
（
9
）
Output current and output wattage must not exceed the rated value on its specification.
（
10
）
Disconnect system from supply voltage:
Before commencing any installation, maintenance or modification work: Disconnect your system from
supply voltage. Make sure that inadvertent connection in circuit will be impossible!
"Click"
