Enclosures LDG-A
www.erni.com
Catalog E 074485
06/10
Edition 2
www.erni.com
Catalog E 074485
06/10
Edition 2
www.erni.com
Enclosures LDG-A
Table of Contents
General information about LDG-A enclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
The base for economical and compact packaging of your electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Terminal block design and type overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pluggable terminals and blind inserts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Flexibility for customized solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Enclosure versions with ventilation slots. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Enclosure LDG-A 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Enclosure LDG-A 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Enclosure LDG-A 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Enclosure LDG-A 30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Enclosure LDG-A 46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Enclosure LDG-A 70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Catalog E 074483
06/10
Edition 2
www.erni.com
1
Enclosures LDG-A
Types
LDG-A-12, max. 12 screw clamp terminals
LDG-A-14, max. 14 screw clamp terminals
LDG-A-16, max. 16 screw clamp terminals
LDG-A-30, max. 30 screw clamp terminals
LDG-A-46, max. 46 screw clamp terminals
LDG-A-70, max. 70 screw clamp terminals
Features
• Snap-in design for fast end assembly
• Complete assembly of the unit outside of the housing
before
end assembly
• Robust self locking vibration proof terminal block screws
• Protection against accidental human contact
• Transparent cover for LED indicators
• Suitable frame inserts for pluggable standard connectors
• Base parts with and without ventilation slots
• Base part metallized
• Compact and attractive design
• Wall and DIN rail mountable
General
The LDG-A series of enclosures are fully insulated enclosures.
The screw clamp terminals are protected against accidental
contact in accordance with VDE 0100 Part 570, VDE 0160
Part 100 and VBG 4.
Designed for easy installation, these screw terminals can be
soldered by wave, allowing the manufacturing of the PCB
boards in one step.
2
Catalog E 074485
06/10
Edition 2
www.erni.com
Enclosures LDG-A
Technical Data
Type
Degree of protection
Air distances
Creepage distances
Voltage rating
(IEC 60664)
LDG-A-12
LDG-A-14
LDG-A-16
IP20
LDG-A30
LDG-A-46
LDG-A-70
≥ 3 mm
≥ 3.2 mm
≥ 4 mm
≥ 5 mm
The permissible operating voltages depend on the customer application and on the applicable or specified safety require-
ments. Insulation coordination according to IEC 60664-1 has to be regarded for the complete electrical device. Therefore, the
maximum creepage and clearance distances of the mated connectors are specified for consideration as a part of the whole
current path. In practice, reductions in creepage or clearance distances may occur due to the conductive pattern of the prin-
ted board or the wiring used, and have to be taken into account separately. As a result the creepage and clearance distances
for the application may be reduced compared to those of the connector.
Screw clamp
Terminal
wire size
current rating
tightening torque
material
Terminal pin
plating
CuSn6
2 µm Ni
5 µm Sn
Temperature range
max. 2.5 mm
2
max. 16 A
steel, tin plated
max. 4 mm
2
max. 20 A
max. 0.4 Nm
Ms
2 µm Ni
5 µm Sn
-40° C ... +110° C
Base part
Terminal block housing, blind plug, cover
Frame insert and blind insert
Outside dimensions L x B x H
75 x 22.5 x 98.5 mm 75 x 45 x 110 mm
75 x 22.5 x 110 mm
Aprovales
UL
CSA
PC (30% GF), RAL 7032, UL 94 V-1
PC, UL 94 V-2
PC, UL 94 V-0
75 x 55 x 110 mm
75 x 99.7 x 110 mm 75 x 150 x 110 mm 75 x 225 x 110 mm
File E 84703
File LR 62504
Temperature Range
Enclosure
Typ
LDG-A-
12
14
16
30
46
70
Inside temperature 95°
Ambient temperature
50°C
C
3
7
9
16
20
30
A
5
7
8
12
16
23
B
4
6
7
11
14
21
Dissipation in W
C
2
4
5
10
12
19
A
2,5
4
4
7
9
12
23°C
A
8
12
13
19
26
36
B
6
10
11
18
23
33
70°C
B
2
3
3,5
6
8
10
C
1
2
3
5
7
11
A = Both side faces not obstructed, free airflow
B = One side face blocked by obsruction, 0 mm away
C = Both side face blocked by obsruction, 0 mm away
Catalog E 074483
06/10
Edition 2
www.erni.com
3
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