Installation Manual
Type
：
DRDN20/40 DIN rail Type Redundancy Module
DRDN20-12
INPUT
：
1
：
9-14VDC 20A
OUTPUT
：
20A (max)
2
：
9-14 VDC 20A
DRDN20-24
INPUT
：
1
：
19-29VDC 20A
OUTPUT
：
20A (max)
2
：
19-29VDC 20A
DRDN20-48
INPUT
：
1
：
36-60VDC 20A
OUTPUT
：
20A (max)
2
：
36-60VDC 20A
DRDN40-12
INPUT
：
1
：
9-14VDC 40A
OUTPUT
：
40A (max)
2
：
9-14 VDC 40A
DRDN40-24
INPUT
：
1
：
19-29VDC 40A
OUTPUT
：
40A (max)
2
：
19-29VDC 40A
DRDN40-48
INPUT
：
1
：
36-60VDC 40A
OUTPUT
：
40A (max)
2
：
36-60VDC 40A
Introduction
DRDN20/40 is a DIN rail type redundancy module.
Like other Mean Well’s DIN series, they can be mounted on a TS35 Standard DIN rail.
Installation
（
1
）
Always allow good ventilation clearances, 5mm left and right, 40mm above and 20mm below, around the unit
in use to prevent it from overheating.
（
2
）
The appropriate mounting orientation for the unit is vertical, the input terminals at the bottom. Mounting
orientations other than that, such as upside down, horizontal, or table-top mounting, is not allowed.
（
3
）
Use copper wire only, and recommended wires are shown as below.
AWG 18
16
14
12
10
8
6
Rated Current of
Equipment (Amp)
7A 10A 15A 20A 30A 40A 50A
Cross-section of
Lead(mm
2
)
0.8 1.3 2.1
3.3 5.3 8.4
13.3
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 is 6AWG/13.3 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.
