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Subminiature Pushbutton Switch (Cylindrical 10.5-dia.)


High-performance Pushbutton Switch with Built-in Subminiature Basic Switch


Rating 5 A, 125 V (resistive load)
3 A, 250 V (resistive load)
Inrush current NC: 20 A max.
NO: 10 A max.
Contact resistance 50 mΩ max. (initial value)
Between terminals of same polarity 1,000 VAC, 50/60 Hz for 1 min
Between current-carrying metal part and
ground, and between each terminal and
non-current-car-rying metal part
1,500 VAC, 50/60 Hz for 1 min
Durability Mechanical 200,000 operations min.
Electrical 200,000 operations min.
Ambient operating temperature -25 to 80°C (with no icing or condensation)
Ambient operating humidity 45% to 85%RH
Degree of protection IP00
Electric shock protection class Class II
PTI (proof tracking index) 175
Pollution degree 3 (IEC 947-5-1)

Note: The rated values are from testing conducted under the following conditions:
           1) Ambient temperature: 20 ± 2°C
           2) Ambient humidity: 65% ± 5%RH
           3) Operating frequency: 20 operations/minute

Operating Characteristics

Model A2A
Operating Characteristics
Operating force (OF), max.
Releasing force (RF), min.
Pretravel (PT), max.
Total travel (TT), max.
1.47 N
0.10 N
0.8 mm
1.4 mm

• A D2S-5 is used for the built-in switch.

Contact Form

Name Contact form
Double-throw contacts