Subminiature Pushbutton Switch (Cylindrical 10.5-dia.) A2A CSM A2A DS E 2 3 High-performance Pushbutton Switch with Built-in Subminiature Basic Switch Wide selection of pushbutton colors and types. Using a Basic Switch enables greater reliability. Refer to Safety Precautions for All Pushbutton Switches/ Indicators and Safety Precautions on page 2. Ordering Information Pushbutton color Blue Black Green Red White Yellow Model A2A-4A A2A-4B A2A-4G A2A-4R A2A-4W A2A-4Y Note: The face nut, lock washer, and operation unit are shipped separately from the body of the Switch. The A2A has solder terminals, SPDT contacts, and momentary operation. Specifications Characteristics Operating Characteristics 5 A, 125 V (resistive load) Model Rating A2A 3 A, 250 V (resistive load) Operating Characteristics NC: 20 A max. Operating force (OF), max. 1.47 N Inrush current NO: 10 A max. Releasing force (RF), min. 0.10 N Pretravel (PT), max. 0.8 mm Contact resistance 50 m max. (initial value) Total travel (TT), max. 1.4 mm Between terminals of 1,000 VAC, 50/60 Hz for 1 min A D2S-5 is used for the built-in switch. same polarity Between current-carrying Dielectric Contact Form metal part and ground, strength Name Contact form and between each termi- 1,500 VAC, 50/60 Hz for 1 min nal and non-current-car- NC rying metal part Double-throw contacts COM NO Mechanical 200,000 operations min. Durability Electrical 200,000 operations min. 25 to 80C (with no icing or Ambient operating temperature 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 2C 2) Ambient humidity: 65% 5%RH 3) Operating frequency: 20 operations/minute 1A2A Dimensions (Unit: mm) 10 15.3 7.75 14 Face nut thickness: 2, Lock washer: 15 dia. Diameter: 14. Width across hexagonal nut flats: 14, M10, P = 1 Thickness: 2. C NO Note: 1. The Operation Unit can be 13 dia. 19.8 inserted and removed. 2. Unless specified, a tolerance of 0.8 mm applies for all NC 11.4 16.4 dimensions. 24.3 max. 20.4 Panel Cutouts Note: Use a mounting panel thickness of 1 to 4 mm. 10.5 0.3 dia. Safety Precautions Refer to Safety Precautions for All Pushbutton Switches/Indicators. Precautions for Correct Use Twist the conductors through the terminal holes before soldering. To perform soldering on solder terminals, use a soldering iron with a tip temperature of 350 to 400C and complete soldering within 3 seconds. Do not exert any external force on the solder during soldering and for one minute after completing soldering. The Switch does not have a ground terminal. Do not perform wiring while power is being supplied to the Switch. Do not touch the terminals or other charged parts of the Switch while power is being supplied. Doing so may result in electric shock. After wiring the Switch, make sure that there is a suitable isolation distance. Mounting the Operation Unit Panel Mounting The Operation Unit can be inserted and removed. Tighten the hexagonal nut while securing the Switch Mounting can be performed by inserting the slit of by holding it with your fingers. Tighten the hexagonal the Operation Unit into the mounting screw of the nut with a torque of 0.49 to 0.98 Nm. Switch. Mounting force: 39.2 N max. Removing strength: 24.5 N min. Face nut Operation Unit Lock washer Slit The Operation Unit can be Panel inserted and removed. Hexagonal nut Mounting screw 2