KN19 ITT | Alldatasheet
Document overview
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Technical content
by bold printed order numbers. PCB Keyswitches 4 - 75 KN 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 4 - 76 KN 19 4 - 78
by bold printed order numbers. 4 - 76 PCB Keyswitches KN KN 19 short-travel main switch KN 19 short-travel main switch Technical data General information Recommended key grid 19.05 x 38.1 mm Dimensions Length 37.8 mm Width 18.8 mm Overall height 9.7 mm Mechanical design Mounting on PCB Terminals solder terminals Contact system snap-action bridge contact Contact arrangement see order block Contact materials Ag Illumination 1 LED (max. 3 mm) possible Degree of protection IP40 Hot wire ignition acc. to IEC 60695-2-1 850 °C Mechanical characteristics Operating force max. 9 ±3 N Operating travel 0,55 ±0,15 mm Robustness max. 100 N
Electrical characteristics
Rated voltage min. DC 12 V Rated voltage min. AC 12 V Rated voltage max. AC 250 V Rated voltage max. DC 50 V Ohmic load AC 6 A Ohmic load DC min. 0.1 A Ohmic load DC max. 10 A Contact resistance when new max. 50 m Ω Capacity input current AC max. 100 A Rated motor current AC 4 A Rated filament lamp current AC 2.4 A Bouncing time max. 10 ms Other specifications Ambient temp. operating min. -25 °C Ambient temp. operating max. +70 °C Storage temperature min. -40 °C Storage temperature max. +80 °C Resistance to constant environment according to IEC 600 68-2-3 and 2-30 Resistance at variable environment according to IEC 600 68-2-14 and 2-33 Approvals ENEC, UL and CSA Acc. to norm VDE:0630,0750; IEC:1058- 1,601-1; EN:61058,60601-1 Operating life AC AC 250 V: 200000 /2A; 100000 /6A Operating life DC 50000(10A/50V=) Soldering time max. 3 sec. Soldering temperature max. 350 °C Defintion of flame class UL 94 VO 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.
KN 19 short-travel main switch PCB Keyswitches 4 - 77 KN Circuit Diagram Dimensional Drawing Hole Pattern
1 NO + 1 NC 2 NO/2 NC
Locating hole only version 2 NO/2 NC Definition ”ON” ”OFF” only valid for 2-pole version. View on component side. 16165-r400-075-E2 2/8/05 12:39 PM Page 4 - 77
by bold printed order numbers. 4 - 78 PCB Keyswitches KN KN 19 short-travel main switch KN 19 Contact arrangement Rated voltage max. AC Approvals Order no. 1 NC + 1 NO 250 V ENEC, UL and CSA 1.12.000.001/0000
2 NC / 2 NOspot illumination
1 LED (max. 3 mm) possible 250 V ENEC, UL and CSA 1.12.000.501/0000 Technical data see page 4 - 76 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.