(!)Due to Microsoft's end of support for Internet Explorer 11 on 15/06/2022, this site does not support the recommended environment.
Instead, please kindly use other browsers like Google Chrome, Microsoft Edge or Mozilla Firefox.
50,000 Stock items for Same Day Ship Out.
All Categories
Categories
- Automation Components
A wide variety of standard and configurable components for factory automation engineers in industries such as automotive, semiconductor, packaging, medical and many more.
- Linear Motion
- Rotary Motion
- Connecting Parts
- Rotary Power Transmission
- Motors
- Conveyors & Material Handling
- Locating, Positioning, Jigs & Fixtures
- Inspection
- Sensors, Switches
- Pneumatics, Hydraulics
- Vacuum Components
- Hydraulic Equipment
- Discharging / Painting Devices
- Pipe, Tubes, Hoses & Fittings
- Modules, Units
- Heaters, Temperature Control
- Framing & Support
- Casters, Leveling Mounts, Posts
- Doors, Cabinet Hardware
- Springs, Shock Absorbers
- Adjusting, Fastening, Magnets
- Antivibration, Soundproofing Materials, Safety Products
- Fasteners
A good selection of accessories such as screws, bolts, washers and nuts that you may need for your daily engineering usage.
- Materials
Browse industrial materials ranging from heat insulating plates, sponges, to metal and plastic materials in different sizes to meet your various applications.
- Wiring Components
A wide variety of wiring parts for connecting and protecting control and PC parts including Connectors, Cables, Electric Wires, Crimping Terminals and more.
- LAN Cables / Industrial Network Cables
- Cables by Application
- Cables with Connectors
- RS232 / Personal Computers / AV Cables
- Wires/Cables
- Connectors (General Purpose)
- Crimp Terminals
- Zip Ties
- Cable Glands
- Cable Bushings/Clips/Stickers
- Screws/Spacers
- Cable Accessories
- Tubes
- Protection Tubes
- Ducts/Wiremolds
- General Purpose Tools
- Dedicated Tools
- Soldering Supplies
- Electrical & Controls
A wide variety of controls and PC parts for electrical engineers including Controls, Powers, PC parts and more.
- Cutting Tools
A wide variety of cutting tools for many uses and work materials including End Mills, Drills, Cutters, Reamers, Turning Tools and more.
- Carbide End Mills
- HSS End Mills
- Milling Cutter Inserts/Holders
- Customized Straight Blade End Mills
- Dedicated Cutters
- Turning Tools
- Drill Bits
- Screw-Hole-Related Tools
- Reamers
- Chamfering / Centering Tools
- Fixtures Related to Cutting Tools
- Step Drills
- Hole Saws
- Clean Key Cutters
- Core Drills (Tip Tools)
- Magnetic Drilling Machine Cutters
- Drill Bits for Electric Drilling Machines
- Woodworking Drill Cutters
- Drills for Concrete
- Processing Tools
A wide variety of tools and supplies used in processing including Machine Tools, Measurement Tools, Grinding and Polishing Supplies and more.
- Material Handling & Storage
A wide variety of goods used in shipment, material handling and warehouse including Tape supplies, Stretch film, Truck, Shelf, Crane and more.
- Tape Supplies
- Cushioning Materials
- Stretch Films
- Cardboard
- Plastic Bags
- PP Bands
- Magic Tapes / Tying Belts
- Rubber Bands
- Strings/Ropes
- Cable Ties
- Tags
- Labelers
- Unpacking Cutters
- Packing Support Equipment
- Cloth Sheets for Packing
- Conveyance/Dolly Carts
- Tool Wagons
- Tool Cabinets / Container Racks
- Lifters / Hand Pallets
- Container Pallets
- Storage Supplies
- Shelves/Racks
- Work Benches
- Suspended Clamps/Suspended Belts
- Jack Winches
- Chain Block Cranes
- Bottles/Containers
- Bicycle Storage Area
- Safety & General Supplies
A large variety of goods for every kind of factories and offices including Protection items, Cleaning supplies, sanitations, office supplies and more.
- Lab & Clean Room Supplies
A large variety of items used in R&D and Clean Room including research Equipment, Laboratory Essentials, Analysis Supplies, Clean Environment-Related Equipment and more.
- Press Die Components
Choose from thousands of standard stamping die components including Punch & Die, Gas Springs, Guide Components, Coil Springs and many more.
- Plastic Mold Components
Browse our wide variety of mold components including Ejector Pins, Sleeves, Leader Components, Sprue Bushings and many more.
- Ejector Pins
- Sleeves, Center Pins
- Core Pins
- Sprue bushings, Gates, and other components
- Date Mark Inserts, Recycle Mark Inserts, Pins with Gas Vent
- Undercut, Plates
- Leader Components, Components for Ejector Space
- Mold Opening Controllers
- Cooling or Heating Components
- Accessories, Others
- Components of Large Mold, Die Casting
- Injection Molding Components
Browse our injection molding components including Heating Items, Couplers, Hoses and more.
- Injection Molding Machine Products
- Accessories of Equipment
- Auxiliary Equipment
- Air Nippers
- Air Cylinders
- Air Chuck for Runner
- Chuck Board Components
- Frames
- Suction Components
- Parallel Air Chuck
- Special Air Chuck
- Chemical for Injection Molding
- Mold Maintenance
- Heating Items
- Heat Insulation Sheets
- Couplers, Plugs, One-touch Joints
- Tubes, Hoses, Peripheral Components
Search by Application
Brands
- Scheduled Maintenance Notice: This site will be unavailable due to scheduled maintenance from 9:00 24/11/2024 to 7:00 (SGT) 25/11/2024. We apologize for the inconvenience.
- Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.
Ultra-Small Size Push Button Switch (Round Body Shape φ10.5) A2A (A2A-4A)
- On Sale Till 31/03/2025
[Features]
· A super-small push button switch with high-performance microswitches.
Japanese Only
Part Number
Configured Part Number is shown.
A2A-4A
Ultra Small Push Button Switch (Round Body Type ø10.5) A2A Specification
A2A appearance
A2A dimensional diagram
Unit: mm
Note 1. The push button is a plug-in type.
Note 2. Of the dimensions described above, unless otherwise specified, dimensional tolerance for components is ±0.8 mm.
A2A panel cutting dimension
Unit: mm
Note. Please set sheet thickness for installation panel from 1 to 4 mm.
A2A Button Color
- Type A2A-4A: blue
- Type A2A-4B: black
- Type A2A-4G: green
- Type A2A-4R: red
- Type A2A-4W: white
- Type A2A-4Y: yellow
Note. aesthetic nut, lock washer, and push button components are shipped attached to the main body of the switch.
Solder terminal, 1c contact, momentary action.
A2A Performance
| Rated | 125 V AC 5 A (resistance load) 250 V AC 3 A (resistance load) | |
|---|---|---|
| Inrush Current | NC side max. 20 A, NO side max. 10 A | |
| Contact Resistance | 50 mΩ or less (initial value) | |
| Withstand Voltage | Between Same Pole Terminals | 1,000 V AC 50/60 Hz 1 min. |
| Between Charging Metal And Ground, Between Each Terminal And Non-Charging Metal | 1,500 V AC 50/60 Hz 1 min. | |
| Durability | Mechanical | 200,000 times or more |
| Electrical | 200,000 times or more | |
| Ambient Operating Temperature | -25 to +80°C (with no icing and no condensation) | |
| Operating Ambient Humidity | 45 to 85% RH | |
| Protective Structure | IP00 | |
| Class Of Electric Shock Protection | Class II | |
| PTI (Tracking Properties) | 175 | |
| Degree Of Pollution | 3 (IEC947-5-1) | |
Note. The rated values were tested under the conditions below.
(1) Ambient temperature: 20 ±2°C
(2) Ambient humidity 65 ±5% RH
(3) Operating frequency: 20 times/min.
A2A Operating Properties
| Operating properties | Type A2A | ||
|---|---|---|---|
| Force Required For Operation | OF | Max. | 1.47 N |
| Return Force | RF | Min. | 0.10 N |
| Movement Through Actuation | PT | Max. | 0.8 mm |
| Overall Action | TT | Max. | 1.4 mm |
Internal switch used is model D2S-5.
A2A Contact Type
| Name | Contact Type |
|---|---|
| Double-throw (c contact) |  |
| Part Number |
|---|
| A2A-4A |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Color of Operating Unit |
|---|---|---|---|---|---|
SGD 5.20 | 3 Piece(s) | 4 Day(s) or more | Blue |
Loading...
Basic Information
| Mounting Hole | φ10.5 | Operating part shape | Round | Type | Non-illumination type push-button |
|---|---|---|---|---|---|
| Operating function | Momentary | Contact Configuration | 1c | Terminal shape | Soldering Terminal |
| Guard included | NA | Panel depth dimensions(mm) | 20.4 | Protection function | NA |
| Operating part dimensions - horizontal(mm) | 13 | Operating part dimensions - vertical(mm) | 13 | Switch rating, AC resistance load 1 | AC125V/5A |
| Switch rating, AC resistance load 2 | AC250V/3A |
Please check the type/dimensions/specifications of the part A2A-4A in the Ultra-Small Size Push Button Switch (Round Body Shape φ10.5) A2A series.
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Similar Part Numbers
| Part Number |
|---|
| A2A-4B |
| A2A-4G |
| A2A-4R |
| A2A-4W |
| A2A-4Y |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Color of Operating Unit |
|---|---|---|---|---|---|
SGD 5.20 | 1 Piece(s) | Same day | Black | ||
SGD 5.20 | 1 Piece(s) | Same day | Green | ||
SGD 5.20 | 3 Piece(s) | 4 Day(s) or more | Red | ||
SGD 5.20 | 1 Piece(s) | 18 Day(s) | White | ||
SGD 5.20 | 1 Piece(s) | Same day | Yellow |
Tech Support
- Factory Automation, Electronics, Tools, & MRO (Maintenance, Repair and Operations)
- Tel：(65) 6733 7211 / FAX：(65) 6733 0211
- 9:00am - 6:00pm (Monday - Friday)
- Technical Inquiry
Payment Method
- Credit Card
- PayPal
- Bank Transfer
Social Media
MISUMI Contact
Copyright © MISUMI Corporation All Rights Reserved.
How can we improve?
How can we improve?