Subminiature Pushbutton Switch (Cylindrical 10.5-dia.)
A2A
 High-performance Pushbutton Switch with Built-in Subminiature Basic Switch
High-performance Pushbutton Switch with Built-in Subminiature Basic Switch
Characteristics
| Rating | 5 A, 125 V (resistive load) | |
| Inrush current | NC: 20 A max. | |
| Contact resistance | 50 mΩ max. (initial value) | |
| Dielectric  | Between terminals of same polarity | 1,000 VAC, 50/60 Hz for 1 min | 
| Between current-carrying metal part and | 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. | 1.47 N | 
• A D2S-5 is used for the built-in switch.
Contact Form
| Name | Contact form | 
| Double-throw contacts |   | 
 
															 
															 
															 
															 
								