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| 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 cutout 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 93 N 0,550,15 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 m 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:10581,601-1; 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 |
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