DATA LDT, LDS SWITCHES – MOMENTARY (LDT) AND LATCHING (LDS) ACTION
BENEFITS
Absolute reliability and simple assembly
Compact design with very small mounting depth
Excellent price/performance ratio
Suitable for front and print-mounting
Good illumination
Many different application fields
LDT
LDS
Electrical data
Switching voltage
Switching current max.
Lifetime (at rated breaking capacity 1.2 W)
Initial contact resistance, new
Initial contact resistance, after lifetime
Insulation resistance
Contact bounce time
Mechanical data
Actuating force
Contact travel
End contact travel
End stop strength
Lifetime
Other data
Soldering method Hand soldering(soldering terminal) or soldering bath(print terminals)
Soldering heat resistance
Ambient temperature
Storage temperature
Degree of protection
Materials
Socket
Button
Contacts
Contact spring
Terminals
gold on request
[ºC/s]
* 280/3(soldering)270/5(print terminals)
illuminated
[ºC/s]
non-illuminated
[ºC/s]
illuminated
[ºC/s]
non-illuminated
[ºC/s]
[N]
[mm]
[mm]
[N]
[operations]
[mΩ]
[mΩ]
[Ω]
[ms]
[mV]
[V]
[mA]
min. 100 AC / DC
max. 60 AC / 50 DC
200
>10
5
< 20
< 25
> 10
10
typ. 0.5
1.2 ± 0.6
1.3 ± 0.5
2.9 ± 0.5
> 50
> 10
5
min. 100 AC / DC
max. 60 AC / 50 DC
200
>10
5
< 20
< 25
> 10
10
typ. 0.5
> 50
> 10
5
* 280/3(soldering)270/5(print terminals)
-25 – + 60
-25 – + 85
-25 – + 60
-25 – + 85
IP 40
Thermoplast PES
Thermoplast PC
CuZn 37, mit 5 µm Ag
CuBe 37, mit 5 µm Ag
CuZn 37, mit 4 µm SN Pb 40
-25 – + 60
-25 – + 85
-25 – + 60
-25 – + 85
IP 40
Thermoplast PES
Thermoplast PC
CuZn 37, mit 5 µm Ag
CuBe 37, mit 5 µm Ag
CuZn 37, mit 4 µm SN Pb 40
LED see page 29
* Data refers to hand soldering only, not to be used for wave soldering
22
DIMENSIONS LDT, LDS SWITCHES – MOMENTARY AND LATCHING ACTION
CONSTRUCTION
LDT / LDS, small button
DIMENSIONS
LDT / LDS, small button with solder terminal
OTHER DATA
N.O.
N.O.
N.O.
inside bevel
< 0.2 x 45°
LED-terminals
Wiring diagram
Front panel drilling
Drilling diagram
Solder terminal version
CIRCUIT DIAGRAM
NO 1 pole
NO 2 pole
23
FRONTPANEL
MEDIUM STROKE
OVERVIEW LDT, LDS SWITCHES – MOMENTARY (LDT) AND LATCHING (LDS) ACTION
In addition to the versions
with the small button, further
versions with a large button
and switching functions are
available on request.
LDT / LDS
LDT / LDS
FEATURES
Illumination
Models
PART NUMBER *
LDT NO 1 pole
LDT NO 2 pole
LDS NO 1 pole
LDS NO 2 pole
Colour of small button **
red
green
black
Shape of bezel/ button
round
square
Colour of LED
red
green
Colour of bezel
black
Mounting accessories
Securing clip* * *
(necessary for front panel mounting)
0 8 5 0 . 9 2 4 2
non-illuminated
small button
illuminated
small button
0041.9141.
x
0041.9142.
x
0041.9151.
x
0041.9152.
x
x
0
x
x
0
x
x
0
x
x
0
x
0041.9146.
x
0041.9147.
x
0041.9156.
x
0041.9157.
x
x
x
x
x
x
x
x
x
x
x
x
x
3
5
7
3
5
1
3
1
3
1
2
7
7
Securing clip:
Round bezel/ button :
Square bezel/ button :
* X in the Part No. must be replaced by the desired version
** With the illuminated version, the small button is transparent
***Securing clip must be ordered separately
24
OVERVIEW LDT, LDS SWITCHES – MOMENTARY (LDT) AND LATCHING (LDS) ACTION
In addition to the versions
with the small button, further
versions with a large button
and switching functions are
available on request.
LDT / LDS
LDT / LDS
FEATURES
Illumination
Models
PART NUMBER *
LDT NO 1 pole
LDT NO 2 pole
LDS NO 1 pole
LDS NO 2 pole
Colour of small button **
red
green
black
Shape of bezel/ button
round
square
Colour of LED
red
green
Colour of bezel
black
Mounting accessories
Securing clip* * *
0850.9242
7
7
1
2
1
3
1
3
3
5
7
FRONTPANEL
MEDIUM STROKE
3
5
0041.8841.
x
0041.8842.
x
0041.8851.
x
0041.8852.
x
x
0
x
x
0
x
x
0
x
x
0
x
0041.8846.
x
0041.8847.
x
0041.8856.
x
0041.8857.
x
x
x
x
x
x
x
x
x
x
x
x
x
non-illuminated
small button with solder terminal
illuminated
small button with solder terminal
Securing clip:
Round bezel/ button:
square bezel/ button:
* X in the Part No. must be replaced by the desired version
** With the illuminated version, the small button is transparent
***Securing clip is included
25
LETTERING
Depending on the application and font,
there are various lettering possibilities. The following standards can be
used for key letterings:
ORDER INDEX LETTERING
A
=
B
=
C
=
D
=
E
=
F
=
G
=
H
=
I
=
J
=
K
=
L
=
M
=
N
=
O
=
001
002
003
004
005
006
007
008
009
010
011
012
013
014
015
P
=
Q
=
R
=
S
=
T
=
U
=
V
=
W
=
X
=
Y
=
Z
=
0
=
1
=
2
=
3
=
016
017
018
019
020
021
022
023
024
025
026
027
028
029
030
4
=
5
=
6
=
7
=
8
=
9
=
+
=
-
=
·
=
x
=
÷
=
=
=
=
#
=
↔
=
031
032
033
034
035
036
037
038
039
040
041
042
043
044
045
↑
=
↓
→
=
←
=
↓
=
↑
=
%
=
√
=
CTRL
=
RETURN
=
SHIFT
=
LOCK
=
STOP
=
ENTER
=
BACK
=
LINE
=
046
047
048
049
050
051
052
053
054
055
056
057
058
059
060
EIN
=
AUS
=
AUF
=
AB
=
ON
=
OFF
=
UP
=
DOWN
=
HIGH
=
LOW
=
ON/OFF
=
START
=
061
062
063
064
065
066
067
068
069
070
071
072
MCS 18, LETTER HEIGHTS AND FONTS
Single characters, Univers 65
Legends max. 6 characters in line, Univers 65
2,83
Insert label and front foil anthracite, RAL 7016
Characters and symbols light grey, RAL 7035
SSM 27, LETTER HEIGHTS AND FONTS
7,0
Single characters, Univers 65
Legends max. 6 characters in line, Akzident-Grotesk condensed bold type
Front foil anthracite, RAL 7016
Characters and symbols light grey, RAL 7035
LIGHTING TECHNOLOGY
New specification
LEDs
TECHNICAL DATA
from 1.7.2011*
TechNical DaTa
1. Maximum ratings
leDs
1. Maximum
Part number
Ratings
internal part
Light colour
number
light colour
Forward current, DC
Forward current
Power dissipation
Dc
I
F
max. [mA]
3,0
LED old
leD new*
0925.9730
0925.9730
red
red
40
130
2.0 (< 2.6)
40
130
LED old
0925.9731
leD new*
0925.9731
green
green
40
130
2.0 (< 2.6)
40
130
LED old
leD new*
0925.9732
0925.9732
yellow
yellow
40
130
2.0 (< 2.6)
40
130
red
30
100
green
30
100
yellow
30
100
I
F
P
tot
max. [mW]
max. [mA]
P
tot
max.
Power dissipation
2. Characteristics
(typ. at T
U
= 25 ºC)
[mW]
2. characteristics
Forward voltage
(typ. at
I
T
u
=25°c)
typ. [mA]
at
F
=10mA,U
F
Forward Voltage
Luminous intensity
luminous intensity
Viewing angle
Viewing angle
Peak wave length
Peak wave lenght
Reverse voltage
Reverse voltage
at
at
F
I
=10mA, U
F
typ.
[mcd]
I
F
=10mA,I
V
[V]
at I
F
=10mA, I
f
typ.
[Dergree]
[mcd]
v
typ.
typ. [degree]
l
typ. [nm]
peak
typ.
R
[nm]
[V]
U typ.
U
r
typ. [V]
2.0 (<2.6)
11.2 - 28
2 at 20ma
11.2 - 28
50
635
5
50
635
5
2.0 (<2.6)
18 - 45
2.4 at 20ma
18 - 45
50
565
5
50
565
5
2.0 (<2.6)
11.2 - 28
at 20ma
2.4
11.2 - 28
50
586
5
50
586
5
6.3 to…
60
635
6
6.3 to…
60
565
6
6.3 to…
60
585
6
29
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