C&K 3 Series
Thumbwheel Switches
Features/Benefits
• Most complete product offering in the industry
• Spacers available to fit most panel cutouts
• Front or rear mounting options
Typical Applications
• Test & measurement equipment
• Industrial equipment
• Computer devices
Specifications
Materials
CONTACT RATING:
CARRY: 1 AMP continuous.
SWITCH: 100 mA max.
OPERATING VOLTAGE: 50 mV to 28 V DC or 120 V AC.
ELECTRICAL LIFE: 100,000 actuations.
CONTACT RESISTANCE: Below 100 m Ω typ. initial @
2-4 V DC, 100 mA.
INSULATION RESISTANCE: 109 Ω min.
DIELECTRIC STRENGTH: 500 Vrms min. @ sea level
between common terminal and any output.
OPERATING TEMPERATURE: -10ºC to 65ºC.
HOUSING: ABS plastic.
THUMBWHEEL: ABS plastic.
ROTOR CONTACTS: Precious metal on copper alloy.
STATOR CONTACTS: Hard gold over nickel over copper
on epoxy fiberglass.
NOTE: Specifications and materials listed above are for switches with standard options
For information on specific and custom switches, consult Customer Service Center.
* Note: All models listed are RoHS compliant. See Technical Data section of this catalog for
RoHS compliant and compatible definitions and specifications.
Thumbwheel & Pushwheel
Build-A-Switch
N
To order, simply select desired option from each category and place in the appropriate box. Available options are shown and
described on pages N–9 thru N–12. For additional options not shown in catalog, consult Customer Service Center.
Consult factory for illumination availability.
Series
3 Thumbwheel switch
Number of Sections
0 Switch section
1 1 Switch section
2 2 Switch sections
3 3 Switch sections
4 4 Switch sections
5 5 Switch sections
6 6 Switch sections
7 7 Switch sections
8 8 Switch sections
9 More than 8
switch sections
Function Code
11 Decimal, SP, 10 position
14 Resistor decade
21 BCD, 10 position
23 Complement of BCD, 10 position
27 BCD, 10 position
31 BCD, 10 position
71 BCH, 16 position
Mounting Style
00 Snap-in, front mount
09 Snap-in, front mount*
10 Rear mount
Terminations
19 Rear mount*
0 Type 0
20 Rear mount
1 Type 1, extended type 0
29 Rear mount*
N Solder pins with .100” spacing**
P Solder pins with .156” spacing**
9 Any combination
Color/Marking/Stops
0 Matte black body, gloss
black wheel,
white marking
*X9 mounting styles must be ordered with ‘0’ number of sections.
** Note: Termination option N (RoHS compliant) replaced termination option 3 (Non-RoHS compliant).
Termination option P (RoHS compliant) replaced termination option B (Non-RoHS compliant).
Seal
0 No seal
1 Sealed contacts
2 Dust lens
3 Sealed contacts & dust lens
Dimensions are shown: Inch (mm)
Specifications and dimensions subject to change
N–8
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