Frontpanel Line
8
Switches in momentary action LDT, and latching action LDS
Models
NO 1pole
NO 2pole
NC 1pole
NC 2pole
NC/NO
Dimensions Wiring diagram
Front panel drilling
Drilling diagram
Solder terminal version
Construction Circuit diagram
Small button
Large button
Small button with
solder terminal
Frontpanel mounting
Frontpanel mounting
Frontpanel mounting
/ N.O.
/ N.O.
/ N.C.
/ N.C.
Panel
cut out
9
Frontpanel Line
Technical Data LDT, LDS
SolderabilityIEC 68-2-20 Test Ta, Methode 1
IEC 68-2-20 Test Tb, Methode 1A
Soldering heat resistance
illuminated
Ambient temperaturenon-illuminated
illuminated
Storage temperaturenon-illuminated
Degree of protection
235°C / 2s
260°C / 5s
-25°C…+60°C
-25°C…+85°C
-25°C…+60°C
-25°C…+85°C
IP 40
3.Other data
Switching voltage
Switching current max.
Lifetime (rated interrupting capacity1,2W)
(IEC 512-2, mV-Method)
Initial contact resistance, new
Initial contact resistance, after 105 cycles
(IEC 512-2) Insulation resistance
Contact bounce time
min.: 100mV AC/DC
max.: 60V AC / 50V DC
200mA
> 105
Cycles
< 20mΩ
< 25mΩ
> 1010Ω
typ. 0,5ms
2.Electrical data
Actuating force
Contact travel
End contact travel
(DIN 41640 Teil 19)
End stop strength
(IEC 512-5 Test 9a, actuating force 5N)
Lifetime
1,5N ±0,3N
1,35mm ±0,2mm
2,9mm ±0,1mm
> 50N
> 105 Operations
1.Mechanical data
Socket
Button
ContactsGold on request
Contact spring
Terminals
Thermoplast PES
Thermoplast PC
CuZn 37, mit 5µm Ag
CuBe, mit 5µm Ag
CuZn 37, mit 4µm SN Pb 40
4.Materials
0925.9730
0925.9731
0925.9732
see page 40
5.LED data
0850.9242
0850.9277
Securing clip necessary for front panel mounting
Color of small button
yellow
orange
red
blue
green
grey
black
white
12411101
1241110 2
1241110 3
1241110 4
1241110 5
1241110 6
1241110 7
1241110 8
Frontpanel Line
10
LDT, LDS with small button — non-illuminated
Models
Bezel
Small button
Holder
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.9151.X.X.0.X
0041.9152.X.X.0.X
0041.9153.X.X.0.X
0041.9154.X.X.0.X
0041.9155.X.X.0.X
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.9141.X.X.0.X
0041.9142.X.X.0.X
0041.9143.X.X.0.X
0041.9144.X.X.0.X
0041.9145.X.X.0.X
Momentary action
Mounting accessories
Latching action
Variations Part Number
Shape of bezel and
button
12411101
1241110 2
1241110 3
non-illuminated 1241.1X14. 3.0.0
Color of bezel
yellow
orange
red
blue
green
grey
black
white
12411110 1
12411110 2
12411110 3
12411110 4
12411110 5
12411110 6
12411110 7
12411110 8
(only for hand soldering)
Module holder optional for vertical PCB mounting
Order specific production
LDT, LDS with small button — illuminated
Frontpanel Line11
0850.9242
0850.9277
Securing clip necessary for front panel mounting
Color of small button
gelbyellow
rotred
grüngreen
1241110 1
1241110 3
1241110 5
Models
Bezel
Small button
LED
Holder
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.9156.X.X.X.X
0041.9157.X.X.X.X
0041.9158.X.X.X.X
0041.9159.X.X.X.X
0041.9160.X.X.X.X
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.9146.X.X.X.X
0041.9147.X.X.X.X
0041.9148.X.X.X.X
0041.9149.X.X.X.X
0041.9150.X.X.X.X
Momentary action
Mounting accessories
Latching action
Variations Part Number
Shape of bezel and
button
12411101
1241110 2
1241110 3
Color of LED
rotred
grüngreen
gelbyellow
1
2
3
Color of bezel
gelbyellow
orangeorange
rotred
blaublue
grüngreen
graugrey
schwarzblack
weißwhite
1
2
3
4
5
6
7
8
(only for hand soldering)
Module holder optional for vertical PCB mounting
Order specific production
0850.9242
0850.9277
Securing clip necessary for front panel mounting
Clear glass button
(only with mechanical indicator)
9
Frontpanel Line
12
LDS with small button — mechanical indicator
Models
Bezel
Small button
Mechanical indicator
Holder
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.9161.9.X.X.X
0041.9162.9.X.X.X
0041.9163.9.X.X.X
0041.9164.9.X.X.X
0041.9165.9.X.X.X
Latching action
Variations Part Number
Shape of bezel and
button
1
2
3
Color of mechanical
indicator
rotred
grüngreen
weißwhite
4
5
6
Color of bezel
gelbyellow
orangeorange
rotred
blaublue
grüngreen
graugrey
schwarzblack
weißwhite
1
2
3
4
5
6
7
8
Mounting accessories
(only for hand soldering)
Module holder optional for vertical PCB mounting
Order specific production
13
Frontpanel Line
LDT, LDS with large button — non-illuminated/without legend
0850.9242
0850.9277
Securing clip necessary for front panel mounting
Color of large button
gelbyellow
orangeorange
rotred
blaublue
grüngreen
graugrey
schwarzblack
weißwhite
1
2
3
4
5
6
7
8
Models
Bezel
Large button
Holder
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.9121.X.X.0.XXX
0041.9122.X.X.0.XXX
0041.9123.X.X.0.XXX
0041.9124.X.X.0.XXX
0041.9125.X.X.0.XXX
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.9101.X.X.0.XXX
0041.9102.X.X.0.XXX
0041.9103.X.X.0.XXX
0041.9104.X.X.0.XXX
0041.9105.X.X.0.XXX
Momentary action
Mounting accessories
Latching action
Variations Part Number
Shape of button
(without legend)
1
2
3
4
5
(only for hand soldering)
Module holder optional for vertical PCB mounting
non-illuminated 0
gelbyellow=091
orangeorange=092
rotred=093
blaublue=094
grüngreen=095
graugrey=
096
schwarzblack=
097
weißwhite=
098
anthrazitanthracite=
099
Color of insert plate for
button shape 5 only
Order specific production
Frontpanel Line
14
0850.9242
0850.9277
Securing clip necessary for front panel mounting
Color of large button
gelbyellow
orangeorange
rotred
blaublue
grüngreen
graugrey
schwarzblack
weißwhite
1
2
3
4
5
6
7
8
LDT, LDS with large button — illuminated/without legend
Models
Bezel
Large button
LED
Holder
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.9126.X.X.X.000
0041.9127.X.X.X.000
0041.9128.X.X.X.000
0041.9129.X.X.X.000
0041.9130.X.X.X.000
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.9106.X.X.X.000
0041.9107.X.X.X.000
0041.9108.X.X.X.000
0041.9109.X.X.X.000
0041.9110.X.X.X.000
Momentary action
Mounting accessories
Latching action
Variations Part Number
without legend 000
(only for hand soldering)
Module holder optional for vertical PCB mounting
Color of LED
rotred
grüngreen
gelbyellow
1
2
3
Shape of button
(without legend)
1
2
3
4
Order specific production
15
Frontpanel Line
LDT, LDS with large button — non-illuminated/with legend
A=001
B=002
C=003
D=004
E=005
F=006
G=007
H=008
I=009
J=010
K=011
L=012
M=013
N=014
O=015
P=016
Q=017
R=018
S=019
T=020
U=021
V=022
W=023
X=024
Y=025
Z=026
0=027
1=028
2=029
3=030
4=031
5=032
6=033
7=034
8=035
9=036
+=037
-=038
·=039
x=040
÷=041
S=042
==043
#=044
↔=045
◊=046
→=047
←=048
↓=049
↑=050
%=051
√=052
CTRL=053
RETURN=054
SHIFT=055
LOCK=056
STOP=057
ENTER=058
BACK=059
LINE=060
EIN = 061
AUS = 062
AUF = 063
AB = 064
ON = 065
OFF = 066
UP = 067
DOWN = 068
HIGH = 069
LOW = 070
ON/OFF = 071
START = 072
Color of large button
gelbyellow
orangeorange
rotred
blaublue
grüngreen
graugrey
schwarzblack
weißwhite
1
2
3
4
5
6
7
8
Models
Bezel
Large button
Holder
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.9131.X.X.0.XXX
0041.9132.X.X.0.XXX
0041.9133.X.X.0.XXX
0041.9134.X.X.0.XXX
0041.9135.X.X.0.XXX
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.9111.X.X.0.XXX
0041.9112.X.X.0.XXX
0041.9113.X.X.0.XXX
0041.9114.X.X.0.XXX
0041.9115.X.X.0.XXX
Momentary action
Latching action
Variations Part Number
non-illuminated 0
Shape of button
1
2
3
5
A
A
A
A
Legends for button:
shape1+2 = 001-052
shape3+5 = 001-072
Type height/face
see page 41
Important mounting
accessories
see page 14
Order specific production
Frontpanel Line
16
Color of large button
gelbyellow
orangeorange
rotred
blaublue
grüngreen
graugrey
schwarzblack
weißwhite
1
2
3
4
5
6
7
8
LDT, LDS with large button — illuminated/with legend
Models
Bezel
Large button
LED
Holder
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.9136.X.X.X.XXX
0041.9137.X.X.X.XXX
0041.9138.X.X.X.XXX
0041.9139.X.X.X.XXX
0041.9140.X.X.X.XXX
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.9116.X.X.X.XXX
0041.9117.X.X.X.XXX
0041.9118.X.X.X.XXX
0041.9119.X.X.X.XXX
0041.9120.X.X.X.XXX
Momentary action
Latching action
Variations
Color of LED
rotred
grüngreen
gelbyellow
1
2
3
Form des Tastknopfes
Shape of button 2
3
Order specific production
Part Number
A = 001
B = 002
C = 003
D = 004
E = 005
F = 006
G = 007
H = 008
I = 009
J = 010
K = 011
L = 012
M = 013
N = 014
O = 015
P = 016
Q = 017
R = 018
S = 019
T = 020
U = 021
V = 022
W = 023
X = 024
Y = 025
Z = 026
0 = 027
1 = 028
2 = 029
3 = 030
4 = 031
5 = 032
6 = 033
7 = 034
8 = 035
9 = 036
+ = 037
- = 038
· = 039
x = 040
÷ = 041
S= 042
= = 043
# = 044
↔= 045
◊= 046
→= 047
←= 048
↓= 049
↑= 050
% = 051
√= 052
CTRL = 053
RETURN = 054
SHIFT = 055
LOCK = 056
STOP = 057
ENTER = 058
BACK = 059
LINE = 060
EIN = 061
AUS = 062
AUF = 063
AB = 064
ON = 065
OFF = 066
UP = 067
DOWN = 068
HIGH = 069
LOW = 070
ON/OFF = 071
START = 072
Legends for button:
shape2 = 001-052
shape3 = 001-072
Type height/face
see page 41
Important mounting
accessories
see page 14
17
Frontpanel Line
LDT, LDS: Small button and solder terminals — non-illuminated
0850.9242
Securing clip supplied together with
soldering type
Models
Bezel
Small button
Holder
Securing clip
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.8851.X.X.0.X
0041.8852.X.X.0.X
0041.8853.X.X.0.X
0041.8854.X.X.0.X
0041.8855.X.X.0.X
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.8841.X.X.0.X
0041.8842.X.X.0.X
0041.8843.X.X.0.X
0041.8844.X.X.0.X
0041.8845.X.X.0.X
Momentary action
Mounting accessories
Latching action
Variations
Shape of bezel and
button
12411101
1241110 2
1241110 3
Color of bezel
gelbyellow
orangeorange
rotred
blaublue
grüngreen
graugrey
schwarzblack
weißwhite
1
2
3
4
5
6
7
8
Order specific production
Part Number
Color of small button
gelbyellow
orangeorange
rotred
blaublue
grüngreen
graugrey
schwarzblack
weißwhite
1
2
3
4
5
6
7
8
non-illuminated 0
Frontpanel Line
18
LDT, LDS: Small button and solder terminals — illuminated
Models
Bezel
Small button
Holder
Securing clip
Schaltfunktionen
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.8846.X.X.X.X
0041.8847.X.X.X.X
0041.8848.X.X.X.X
0041.8849.X.X.X.X
0041.8850.X.X.X.X
Momentary action
Latching action
Order specific production
0850.9242
Securing clip necessary for front panel mounting
Mounting accessories
Color of bezel
gelbyellow
orangeorange
rotred
blaublue
grüngreen
graugrey
schwarzblack
weißwhite
1
2
3
4
5
6
7
8
Color of LED
rotred
grüngreen
gelbyellow
1
2
3
Shape of bezel and
button
1
2
3
Color of small button
gelbyellow
rotred
grüngreen
1
3
5
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.8856. X . X . X . X
0041.8857. X . X . X . X
0041.8858. X . X . X . X
0041.8859. X . X . X . X
0041.8860. X . X . X . X
Variations Part Number
LED
19
Frontpanel Line
LDT, LDS: Small button and solder terminals - mech. indicator
Models
Bezel
Small button
Mech. Indicator
Holder
Securing clip
Latching action
Order specific production
0850.9242
Securing clip supplied together with
soldering type
Mounting accessories
Color of bezel
gelbyellow
orangeorange
rotred
blaublue
grüngreen
graugrey
schwarzblack
weißwhite
1
2
3
4
5
6
7
8
Color of mechanical
indicator
rotred
grüngreen
weißwhite
4
5
6
Shape of bezel and
button
1
2
3
Clear glass button
(only with mechanical indicator)
9
Switching functions NO 1-pole
NO 2-pole
NC 1-pole
NC 2-pole
NC/NO 1pole
0041.8861.9. X . X . X
0041.8862.9. X . X . X
0041.8863.9. X . X . X
0041.8864.9. X . X . X
0041.8865.9. X . X . X
Variations Part Number
