In the interest of product improvement, specifications are subject to change without notice.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. A156-E1-01A
Thumbwheel Switch A7AS 57
■ Accessories (Order Separately)
Connectors
The Switch Units can be installed using snap-in mounting, allowing easy maintenance and inspections after wiring is completed.
Note: Unless otherwise indicated, dimensional tolerances for dimensions in the models above are
±0.4 mm.
Safety Precautions
■ Precautions for Correct Use
Please observe the following precautions to prevent failure to
operate, malfunction, or undesirable effect on product performance.
Refer to Precautions for Correct Use on page 4 for information
common to all models.
Handling
The molded components of the Switch use polyacetal resin and ABS
resin. It is recommended that alcohol is used to wipe off dirt and
smudges from the molded components. Take care to prevent the
alcohol from getting inside.
Do not use thinner or other solutions which might damage the resin.
Screw-mounting Models
Tighten mounting screws to a torque between 0.39 to 0.59 N·m,
using M3 screws. Use plain washers or spring washers together with
the screws.
Soldering
Refer to Precautions for Correct Use on page 4.
Model NRT-C (solder terminals) NRT-CN (solder terminals) NRT-CP (PCB terminals)
Applicable
models
A7AS A7AS A7AS
Appearance
and
dimensions
Two, 3.3 dia.
1×2
elliptical hole
Inserting Connectors
Insert Connectors with the "UP" arrow pointing up.
Connector
