KN 19 short-travel main switch
General data
Short-travel main switch for use in membrane keyboards under the overlay or with RK 90 keycaps, 250V, 4A max. A cut-
out in the overlay is not required!
Content
KN 19 short-travel main switch
KN 19
4 - 76
4 - 78
4
KN
19
PCB Keyswitches
Stock items
are marked
by
bold printed
order numbers.
4 - 75
KN 19 short-travel main switch
KN 19 short-travel main switch
General data
The KN 19 makes it possible to implement a power switch directly in a low-profile data entry system. This eliminates the
need for extra switches on the device and additional openings in the overlay. In this way, you can achieve an optimum of
safety and a consistent design.
The contact opening widths comply with the VDE standards. The KN 19 can also be employed underneath RK 90 keycaps.
Other actuation functions (momentary, latching/momentary) available on request.
Technical data
General information
Recommended key grid
19.05 x 38.1 mm
37.8 mm
18.8 mm
9.7 mm
on PCB
solder terminals
snap-action bridge contact
see order block
Ag
1 LED (max. 3 mm)
possible
IP40
850 °C
Resistance at variable
environment
9
±3
N
0,55
±0,15
mm
100 N
12 V
12 V
250 V
50 V
6A
0.1 A
10 A
Approvals
Acc. to norm
Operating life AC
Operating life DC
Soldering time max.
Soldering temperature
max.
Defintion of flame class
Contact resistance when
new max.
Capacity input current
AC max.
Rated motor current AC
Rated filament lamp
current AC
Bouncing time max.
Other specifications
Ambient temp. operating
min.
Ambient temp. operating
max.
Storage temperature min.
Storage temperature max.
Resistance to constant
environment
50 mΩ
100 A
4A
2.4 A
10 ms
4
Dimensions
Length
Width
Overall height
Mechanical design
Mounting
Terminals
Contact system
Contact arrangement
Contact materials
Illumination
-25 °C
+70 °C
-40 °C
+80 °C
according to
IEC 600 68-2-3 and 2-30
according to
IEC 600 68-2-14 and 2-33
ENEC, UL and CSA
VDE:0630,0750; IEC:1058-
1,601-1; EN:61058,60601-1
AC 250 V: 200000 /2A;
100000 /6A
50000(10A/50V=)
3 sec.
350 °C
UL 94 VO
KN
19
Degree of protection
Hot wire ignition acc.
to IEC 60695-2-1
Mechanical characteristics
Operating force max.
Operating travel
Robustness max.
Electrical characteristics
Rated voltage min. DC
Rated voltage min. AC
Rated voltage max. AC
Rated voltage max. DC
Ohmic load AC
Ohmic load DC min.
Ohmic load DC max.
4 - 76
Stock items
are marked
by
bold printed
order numbers.
PCB Keyswitches
KN 19 short-travel main switch
Circuit Diagram
1 NO + 1 NC
2 NO/2 NC
Dimensional Drawing
Definition ”ON” ”OFF” only
valid for 2-pole version.
Hole Pattern
4
KN
19
Locating hole only version 2 NO/2 NC
View on component side.
PCB Keyswitches
4 - 77
KN 19 short-travel main switch
KN 19
Contact arrangement
Rated voltage max. AC
Approvals
Order no.
1 NC + 1 NO
2 NC / 2 NOspot illumination
1 LED (max. 3 mm) possible
Technical data see page 4 - 76
250 V
250 V
ENEC, UL and CSA
ENEC, UL and CSA
1.12.000.001/0000
1.12.000.501/0000
For keycaps, refer to RK 90 system design.
Positive opening NC contacts to IEC 60 947-5-1.
1-LED spot illumination (max. 3 mm) possible.
4
KN
19
4 - 78
Stock items
are marked
by
bold printed
order numbers.
PCB Keyswitches
PCB设计
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