Thumbwheel Switches

A thumbwheel switch is a type of switch that converts numbers to binary, decimal or hexadecimal code in your electronic circuit. The converted code then forms on and off signals.

How do thumbwheel switches work?

Thumbwheel switches are typically made from a case, push buttons, slider, rotor, seal plate, packing, PCB and end caps.

When installed in your electronic or digital device, thumbwheel switches allow you to input codes and numbers by manipulating the circular wheel with your thumb (hence thumbwheel). Thumbwheel switches are commonly used in instrumentation, process controls, testing and machine controls.

Types of thumbwheel switches

Thumbwheel switches differ in their mounting method. For example, some thumbwheel switches have a lock function that locks the set values and prevents them from being changed. Others can only be operated with a pen tip or other thin object. When selecting a thumbwheel switch, consider the size of the device the switch will be mounted in and choose accordingly.


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Description Price Output Coding Switch Readout Actuator Type Terminal Type Mounting Type Contact Resistance Contact Material Mechanical Life Number of Switch Positions IP Rating Minimum Operating Temperature Maximum Operating Temperature Current Rating Operating Temperature Range
RS Stock No. 693-2379
Mfr. Part No.HTW-02-RED
BrandApem
TWD2,799.00
Each
units
- - Thumbwheel Pre-wired - - - 3000000Operations - IP67 -40°C +85°C 10mA -40 → +85°C
RS Stock No. 161-4802
Mfr. Part No.PB C-1E000
BrandZF
TWD353.00
Each
units
BCD 0 to 9 Thumbwheel Through Hole Panel Mount 100mΩ WE Alloy 10^6Operations 10 - -20°C +80°C 100 mA @ 50 V ac -20 → +80°C
RS Stock No. 828-8160
Mfr. Part No.DMC-1
BrandIdec
TWD199.00
Each
units
- - - Solder Cable Mount - - - 12 - - - - -
RS Stock No. 828-8163
Mfr. Part No.DGAN031D-B
BrandIdec
TWD315.00
Each
units
6 4 - Solder Panel Mount 200mΩ - - 10 - - - 100mA -
RS Stock No. 693-2372
Mfr. Part No.HTW-02-BLU
BrandAPEM
TWD2,799.00
Each
units
- - Thumbwheel Pre-wired - - - 3000000Operations - IP67 -40°C +85°C 10mA -40 → +85°C
RS Stock No. 118-7704
Mfr. Part No.SH6-131-AK
BrandHartmann
TWD285.00
Each
units
BCD 0 to 9 - Through Hole PCB 100mΩ Gold Plated 100000Operations 10 - -20°C +80°C 100 mA @ 40 V dc -20 → +80°C
RS Stock No. 693-2354
Mfr. Part No.HTW-12-RED
BrandAPEM
TWD2,640.00
Each
units
- - Thumbwheel Pre-wired - - - 3000000Operations - IP67 -40°C +85°C 10mA -40 → +85°C
RS Stock No. 693-2360
Mfr. Part No.HTW-12-GRY
BrandAPEM
TWD2,799.00
Each
units
- - Thumbwheel Pre-wired - - - 3000000Operations - IP67 -40°C +85°C 10mA -40 → +85°C
RS Stock No. 828-8166
Mfr. Part No.DGBN-031D-B
BrandIdec
TWD305.00
Each
units
6 4 - Solder Panel Mount 200mΩ - - 10 - - - 100mA -
RS Stock No. 693-2376
Mfr. Part No.HTW-02-BLK
BrandApem
TWD2,799.00
Each
units
- - Thumbwheel Pre-wired - - - 3000000Operations - IP67 -40°C +85°C 10mA -40 +85°C
RS Stock No. 693-2385
Mfr. Part No.HTW-02-GRY
BrandAPEM
TWD2,799.00
Each
units
- - Thumbwheel Pre-wired - - - 3000000Operations - IP67 -40°C +85°C 10mA -40 → +85°C