BENEFITS
DATA MCS 18, SSM 27 SWITCHES –MOMENTARY ACTION
Unique mechanical switches with tactile feedback
Extremely high life time of 5 million switching
cycles (SSM)
Small mounting depth
Various lettering options
No mechanical stress of the switching elements
due to magnetic switching principle (SSM)
Front and rear tested to degree of protection IP 65
MCS 18 gold contacts MCS 18 silver contacts SSM 27
Electrical data
Contact material gold silver AuNi
Switching voltage [mV] min. 50 DC min. 5V DC min. 3V DC
[V] max. 24 DC max. 48 DC max. 50 DC
Switching current max.
[mA]
80 125 50
Rated breaking capacity
[W]
0.36 0.72 2.5
Lifetime (at rated breaking capacity) >10
6
>10
6
5 Mio.
Initial contact resistance, new [mΩ] <50 <50 *
Initial contact resistance, after lifetime [mΩ] <150 <150 *
Insulation resistance [Ω] >10
8
>10
8
*
Contact bounce time [ms] typ. 0.1 typ. 0.1 typ. 1
ESD resistance
[kV]
±16 ±16 ±16
Mechanical data
Actuating force [N] 3 ± 1 3 ± 1 2.8
Contact travel [mm] 0.5 ± 0.1 0.5 ± 0.1 0.30
End stop strength [N] >50 > 50 IK 03
Lifetime [operations] >1 Mio. >1 Mio. >5 Mio.
Other data
Solderability [ºC/s] 235 / 2 235 / 2
Soldering heat resistance
[ºC/s]
260 / 5 260 / 5
Ambient temperature [ºC] -25 – +60 -25 – +60 -25 – +85
Storage temperature [ºC] -25 – +60 -25 – +60 -25 – +85
Degree of protection IP 65 IP 65 IP 65
Recommended torque [N/cm] 8 8 250
Materials
Socket/Housing (SSM 27) Thermoplast PES Thermoplast PES Alu anodized
Face foil PETP PETP PETP
Bezel Thermoplast PBTP Thermoplast PBTP Alu anodized
Contact material gold / silver CuZn 37, 3µm Ni 2 µm Au CuZn 37, 2.5µm Ag Au Ni
Soldering aid tinned tinned
* on request
19
FRONTPANEL
SHORT STROKE
DIMENSIONS MCS 18, SSM 27 SWITCHES –MOMENTARY ACTION
CONSTRUCTION
CIRCUIT DIAGRAM
MCS 18 SSM 27
DIMENSIONS
DRILLING DIAGRAM
M 27
20
MCS 18
MCS 18 SSM 27
OVERVIEW MCS 18, SSM 27 SWITCHES –MOMENTARY ACTION
FEATURES
Contact material Ag Au Au
Degree of protection IP 65 IP 65 IP 65
PART NUMBER *
square 1241.1100. 1241.1102.
round 1241.1104. 1241.1106.
square with soldering aid 1241.1112.
round with soldering aid 1241.1113.
Colour of bezel
red
grey
black
alu natural
Colour of face foil
red
green
Colour of face foil without legend
yellow
red
green
grey
black
white
Standard lettering
Order index see page 29 see page 29 see page 29
Accessories
IP 65 to the front 0098.9201 0098.9201 **
098098
097097
096096
095095
093093
091091
1245.2112.45100095
1245.2112.43100093
°
77
66
33
xxxx
xxxx
xxxxxxxx
xxxxxxxx
* X in the Part No. must be replaced by the desired version
** Nut and O-ring are included
°
Standard version
21
FRONTPANEL
SHORT STROKE
LETTERING
= 046
↑ = 049
↑
↓
EIN = 061
AUS = 062
AUF = 063
AB = 064
= 046
↑ = 049
↓ = 050
↑
↓
EIN = 061
AUS = 062
AUF = 063
AB = 064
ON = 065
Depending on the application and font, there are various lettering possibilities. The following standards can be
used for key letterings:
ORDER INDEX LETTERING
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
= 042
= = 043
# = 044
↔ = 045
MCS18, LETTER HEIGHTS AND FONTS
Single characters, Univers 65
Legends max. 6 characters in line, Univers 65
Insert label and front foil anthracite, RAL 7016
2,83
Characters and symbols light grey, RAL 7035
SSM 27, LETTER HEIGHTS AND FONTS
↑
= 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
Single characters, Univers 65
7,0
Legends max. 6 characters in line, Akzident-Grotesk condensed bold type
Front foil anthracite, RAL 7016
3,0
Characters and symbols light grey, RAL 7035
i
29
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