A3AT-90A1-00A

A3A_V01 OMRON | Alldatasheet

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A A A3A Lighted Pushbutton Switch Compact High-capacity Push-button Switch

• Ideal for use as a high breaking capacity Power Switch.
• Switches from micro load (minimum applicable load: 5 VDC 1mA) to high capacity load. List of Models Model Number Structure RoHS Compliant Refer to Safety Precautions for All Pushbutton Switches and Safety Precautions on page 8.
• Non-lighted Push-button Switches ●Lighted Push-button Switches Appearance Model Illumination Appearance Model Square A3AA-9@ @1-00@ LED surface illumination Square A3AA-9@ @1-00E@ Round A3AT -9@ @1-00@ Round A3AT -9@ @1-00E@ The model numbers used to order sets of Units are illustrated below. One set comprises the Pushbutton (LED lamp built-in) and Switch. For information on combinations, refer to Ordering Information. A3A A -9 0K 1- 00E R (1) Shape of Pushbutton (2) Terminal (3) Switch Specifications Symbol Shape A Square T Round Symbol Type

0 Solder

Symbol Operation Contact type A Momentary SPDT 3 A at 125 VAC,

2 A at 30 VDCB Alternate

6 A at 125 VAC,

2 A at 250 VAC,

4 A at 30 VDCL Alternate

( ) ( ) (4) Illumination Symbol Operation

00 Non-lighted

(5) Color 1. Pushbutton (Non-lighted Models) 2. LED (Surface Illumination Models) * Common to both lighted and non-lighted models. Symbol Color L Light gray RR e d * Y Y ellow* G Green* AB l u e BB l a c k DD a r k g r a y HG r a y Symbol Color RR e d Y Y ellow GG r e e n ■Specifications: Refer to page 3. ■Dimensions: Refer to page 5. ■Accessories: Refer to page 2.

A3A Lighted Pushbutton Switch A A List of Models SPST-NO Note: The above models each have a SPST-NO contact that can switch 6 A at 125 VAC, 2 A at 250 VAC, and 4 A at 30 VDC. When ordering any of the above models, replace @ of the model number with a code to indicate the pushbutton color of the model (i.e., replace @ with R, Y, G, L, A, B, D, H, and L). The pushbutton of an A3A does not illuminate if the color of the pushbutton is dark gray, gray, light gray, blue, or black. SPDT ■Accessories Flange (Select according to panel color.) Note: An A3A with solder terminals is provided with a round or square black flange and leaf spring. A round black flange is provided with each A3A having solder terminals and a round pushbutton. A square black flange is provided with each A3A having solder terminals and a square pushbutton. Appearance Terminal Operation Illumination Model Color symbol for pushbutton Minimum packing unit Square/A3AA Solder Momentary Non-lighted A3AA-90K1-00@ (Non-lighted) R (red) Y (yellow) G (green) L (light gray) A (blue) B (black) D (dark gray) H (gray) (Surface illumination) R (red) Y (yellow) G (green) 100 LED surface illumination A3AA-90K1-00E@ Alternate Non-lighted A3AA-90L1-00@ LED surface illumination A3AA-90L1-00E@ PCB Momentary Non-lighted A3AA-91K1-00@ LED surface illumination A3AA-91K1-00E@ Alternate Non-lighted A3AA-91L1-00@ LED surface illumination A3AA-91L1-00E@ Round/A3AT Solder Momentary Non-lighted A3AT-90K1-00@ LED surface illumination A3AT-90K1-00E@ Alternate Non-lighted A3AT-90L1-00@ LED surface illumination A3AT-90L1-00E@ PCB Momentary Non-lighted A3AT-91K1-00@ LED surface illumination A3AT-91K1-00E@ Alternate Non-lighted A3AT-91L1-00@ LED surface illumination A3AT-91L1-00E@ Appearance Terminal Operation Illumination Model Color symbol for pushbutton Minimum packing unit Square/A3AA Solder Momentary Non-lighted A3AA-90A1-00@ (Non-lighted) R (red) Y (yellow) G (green) L (light gray) A (blue) B (black) D (dark gray) H (gray) (Surface illumination) R (red) Y (yellow) G (green) 100 LED surface illumination A3AA-90A1-00E@ Alternate Non-lighted A3AA-90B1-00@ LED surface illumination A3AA-90B1-00E@ PCB Momentary Non-lighted A3AA-91A1-00@ LED surface illumination A3AA-91A1-00E@ Alternate Non-lighted A3AA-91B1-00@ LED surface illumination A3AA-91B1-00E@ Round/A3AT Solder Momentary Non-lighted A3AT-90A1-00@ LED surface illumination A3AT-90A1-00E@ Alternate Non-lighted A3AT-90B1-00@ LED surface illumination A3AT-90B1-00E@ PCB Momentary Non-lighted A3AT-91A1-00@ LED surface illumination A3AT-91A1-00E@ Alternate Non-lighted A3AT-91B1-00@ LED surface illumination A3AT-91B1-00E@ Name Shape Classification Model Minimum packing unit Flange Square @12.7 Flange alone Black A3A-241 100 Light gray A3A-242 Round φ12.7 Black A3A-251 Light gray A3A-252 Leaf spring A3A-200 Square @12.7 Flange and leaf spring (one each) Black A3A-211 Light gray A3A-212 Round φ12.7 Black A3A-221 Light gray A3A-222

A3A Lighted Pushbutton Switch A A Specifications ■Approved Standards ■Ratings Note: Minimum allowable load: 5 VDC 1 mA (Resistive) The ratings given above are for testing under the following conditions: (1) Ambient temperature: 20 ±2°C (2) Ambient humidity: 65 ±5% (3) Operating frequency: 20 times/minute LED Note: The above built-in LEDs do not have a resistor. Connect to each of the above built-in LEDs a resistor that satisfies the above conditions. * Refer to the V F – IF characteristic graphs on page 8. ■Operating Characteristics * Alternate operation models only. ■Characteristics *1. With alternate operation models, one operation cycle consists of set and reset operations. *2. Indicates malfunctions of less than 1 ms. ■Contact Form

• SPST-NO  SPDT UL CSA

6 A at 125 VAC 3 A at 125 VAC

2 A at 250 VAC 2 A at 30 VDC

4 A at 30 VDC

AC resistive load DC resistive load Contact form General load SPST -NO 6 A at 125 VAC

2 A at 250 VAC 4 A at 30 VDC

Illumination Surface illumination Red Ye l l ow Green Forward voltage VF Standard value (V) * (IF = 10 mA) 2.0 2.1 2.1 Maximum value (V) 3.0 Forward current IF Maximum value (mA) 20 20 25 Permissible loss PD Maximum value (mW) 60 60 75 Reverse voltage VR Maximum value (V) 3 Operating force OF max. 2.45 N Release force RF min. 0.15 N Total travel TT Approx. 2mm Pretravel PT max. 1.5 mm Locktravel alternate * LTA min. 0.5 mm Operating frequency Mechanical Momentary action: 120 operations/minute max. Alternate action: 60 operations/minute max. *1 Electrical 20 operations/minute max. Insulation resistance 100 M Ω min. (at 500 VDC) Contact resistance 100 m Ω max. (initial value) Dielectric strength Between terminals of same polarity

600 VAC, 50/60 Hz for 1 min

2,000 VAC, 50/60 Hz for 1 min Vibration resistance Malfunction 10 to 55 Hz, 1.5-mm double amplitude *2 Shock resistance Destruction 500 m/s 2 Malfunction 150 m/s 2 *2 Durability Mechanical Momentary action: 1,000,000 operations min. Alternate action: 50,000 operations min. *1 Electrical 50,000 operations min. Weight Approx. 3.2 g Ambient operating temperature −10°C to +55°C (with no icing) Ambient operating humidity 35% to 85% Ambient storage temperature −25°C to +65°C (with no icing) Degree of protection IP00 Electric shock protection class Class II PTI (proof tracking index) 175 Pollution degree 3 (IEC947-5-1) Contact name Contact form Contact type Double-break SPST -NO Double-throw SPDT NO NO COM NC NO

A3A Lighted Pushbutton Switch A A Nomenclature ■Model Structure Note 1. The above is for the A3AA. 2.An A3A with solder terminals is provided with a black flange a nd leaf spring, however an A3A with PCB terminals is not provided with them. If a black flange and leaf spring are required for an A3A with PCB terminals, order them from your OMRON representative. (Refer to page 2.) <Pushbutton> 1. Shape Square (A3AA) <Switch> 3. Ratings Standard load

6 A at 125 VAC

2 A at 250 VAC

• Minimum applicable load: 1 mA at 5 VDC (resistive load) 2. Terminals  Solder terminal  PCB terminal Round (A3AT) Diffusion sheet (milky white) 4.Color cap 5. Color  Non-lighted Model Red , yellow , light gray , gray , dark gray , green , blue , black  Surface Illumination Model Red , yellow , green Flange Leaf spring

A3A Lighted Pushbutton Switch A A Dimensions (Unit: mm) Note: All units are in millimeters unless otherwise indicated. The illustrations below show switches with solder terminals, without a flange or leaf spring. Unless specified, there is a tolerance of ±0.4mm for dimensions. 12.7 15.2 8.9 dia. Round push-button Two, t0.4 terminals @8.9 Square push-button 1.7 12.5 3.5 1.7 3.512.5 Three, t0.4 terminals Non-lighted Model Square Pushbutton Round Pushbutton SPST-NO SPDT 12.7 15.2 8.9 dia. Round push-button Two, t0.4 terminals @8.9 Square push-button 1.7 12.5 3.5 Two, t0.3 LED terminals 1.7 3.512.5 Three, t0.4 terminals Two, t0.3 LED terminals Surface Illumination Model Square Pushbutton Round Pushbutton SPST-NO SPDT

A3A Lighted Pushbutton Switch A A ■Terminals Contact Solder terminal PCB terminal SPST-NO SPDT 0.50.8 0.50.8 2 3.5 1.7 0.8 × 2 3.5 1.7 10.16 4.48 NO NO 10.16 LED terminal Terminal for models with an illuminating push-button Non-lighted ModelsTerminal Hole Dimensions Switch terminal: t0.4 Lighted Models Switch terminal: t0.4 Lamp terminal: t0.3 3.5 0.6 1.7 3.5 0.6 1.7 Holes for models with illuminating push-button 10.16 10.16 4.48 (0.67) (1.87) Four, 1 dia. holes (2.52) (2.52) 㧗㧙 10.16 4.48 NO NO 10.16 LED terminal Terminal for models with an illuminating push-button Switch terminal: t0.4 Terminal Arrangement (BOTTOM VIEW) Switch terminal: t0.4 Lamp terminal: t0.3 Non-lighted Models PCB Dimensions (BOTTOM VIEW) Lighted Models 0.50.8 0.50.8 0.8 1.7 3.5 0.8 1.7 3.5 1.95 5.7 10.16 LED terminal NC NO C Non-lighted Models Terminal Hole Dimensions Switch terminal: t0.4 Lighted Models Switch terminal: t0.4 Lamp terminal: t0.3 3.5 0.6 1.7 3.5 0.6 1.7 1.95 5.7 10.16 LED terminal NC NO C (2.54) 10.16 NO CNC 1.95 5.7 Five, 1-dia. holes Holes for models with illuminating push-button Lighted ModelsNon-lighted Models Switch terminal: t0.4 Terminal Arrangement (BOTTOM VIEW) Switch terminal: t0.4 LED terminal: t0.3 PCB Dimensions (BOTTOM VIEW)

A3A Lighted Pushbutton Switch A A ■Accessories Dimensions Note: Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions. ■Panel Cutouts 7.8 12.7 dia. 9.1 dia. 11.6 (10.1) 5.4 1.0 12.7 9.1 7.8 11.6 (10.1) 5.4 1.0 12.2 2.5 t = 0.3 Leaf Spring A3A-200 Flange (Square) A3A-24 @ Flange (Round) A3A-25 @ Square Pushbutton For Side-by-side Mounting Panel Mounting Dimensions Round Pushbutton 11.5 dia. 11.5 dia. 11.5 dia. +0.2 Square pushbutton Ro und pushbutton Horizontal multiple mounting Vertical multiple mounting 11.5 +0.2 15.3 min. 3.8 min. 11.5 +0.2 11.5 +0.2 +0.3 −012.7(n−1)+11.5 15.3 min. +0.2 12.7 min. +0.2 14.5 max. Flange Panel * Leaf spring * Recommended panel thickness: 1 to 1.6 mm (The diagram shows the lighted SPST -NO model.) +0.2 11.5+0.2 11.5

A3A Lighted Pushbutton Switch A A Precautions

• Refer to the “Push-button Switches Common Precautions” for correct use.  Please do not perform wiring or touch the charged parts of terminals while power is supplied to the Switch.Doing so may result in electric shock.  Make sure to keep a secure insulation distance after wiring to the Switch.
• Mounting  When opening a hole on a panel to mount an A3A to the panel, make sure that the hole has no burr.  When mounting a flange to the switching mechanism of an A3A, make sure that the flange and the casing of the switching mechanism are engaged securely.
• Wiring  When soldering the terminals of an A3A, refer to the following. 1. For manual soldering: Use a soldering iron with the terminals at a temperature of 350°C maximum within three seconds. 2. Do not impose any external force on the terminals for one minute after the terminals are soldered.  Do not pull the terminals of any A3A with a force exceeding 5.34 N, otherwise the joint part of the A3A may be damaged.  When soldering the terminals of an A3A, apply non-corrosive rosin flux to the terminals.  After soldering the terminals of an A3A, do not wash the A3A with any solvent.  When mounting an A3A to a PCB and soldering the terminals of the A3A to the PCB, make sure that the flux will not rise above the surface of the PCB.
• Operating Environment  When using an A3A, make sure that dust, metal powder, or oil will not penetrate into the interior of the A3A.
• LED  The polarity of the LED is indicated on the back of the Switch. Wire the LED correctly according to the polarity.  An A3A with a built-in LED does not have a limiting resistor. Connect a limiting resistor.  The resistance can be calculated by using the following expression. Note: Make sure that the limiting resistor connected to the built-in LED of an A3A satisfies the characteristics of the built-in LED. The mean forward current of the built-in LED must be 8 mA minimum.
• Example Conditions: Red LED with an IF of –10 mA at 24 V and a Ta of 25°C. From the red LED characteristic below, V F will be 2 V when IF is 10 mA. Therefore, R = (24 V – 2 V)/0.01 A = 2,200 Ω. Thus the recommended resistance is 2.2 kΩ at 0.5 W (2* x IF2R). Note: A factor of 2 (marked with an asterisk) is applied because the permissible wattage of the resistor must be twice as large as the required wattage. LED Characteristics (VF – IF Characteristics) Ta: Ambient Temperature (Red) (Yellow) (Green)
• Pushbutton  When exchanging the Pushbutton (except the ones for the mechanical indicator models) with a new one, pull out the Pushbutton from the Switch, holding the Pushbutton in the longitudinal direction. Do not remove the Pushbutton of the mechanical indicator model.
• Engraving of Pushbutton  Depth of engraving: 0.3 mm max. for illuminating pushbutton  Since the Pushbutton is made of polycarbonate, use an alcohol-based paint when marking legend.
• Pressing of Pushbutton  Apply firm pressure to the Pushbutton when operating it. In doing so, however, do not apply a pressure greater than 11.8 N. Precautions for Correct Use R = ( Ω) E : Applied voltage (V) VF : LED forward voltage (V) IF : LED forward current (A) E−VF IF 5.0 2.0 0.1 0.2 0.5 1.0 VF (V) IF (mA) Ta = 25°C 5.0 2.0 0.1 0.2 0.5 1.0 VF (V) IF (mA) Ta = 25°C Ta = 25°C50 5.0 2.0 0.1 0.2 0.5 1.0 VF (V) IF (mA)

A3A Lighted Pushbutton Switch A A ■Installation

• Mounting and Replacing the Pushbutton
• Mounting Switch on a Panel 1. Mounting Direction for the Pushbutton and Switch 2. Removing the Pushbutton (Non-lighted Models Only)  Insert the catches of the Pushbutton into the grooves of the Switch and push down on the Pushbutton until it is fixed securely to the Switch.  With lighted models, the LED is built into the Switch and cannot be replaced.  To remove the Pushbutton, hold both the Pushbutton and the Switch on the longer sides and pull the Pushbutton away from the Switch. (If the catches on the Pushbutton are bent outwards, it may result in malfunction.)  When replacing the Pushbutton, if the cap is held on the sides with catches, internal components (e.g., plate) may come loose. Be sure to hold the Pushbutton by the sides without catches (i.e., the longer sides of the Switch) when removing. Catches on the Pushbutton Grooves in the Switch LED terminals Catch 1. Mount Leaf Spring 2. Mount Flange on Panel 3. Fit Flange with Switch 4. Removing Switch  Press the leaf spring into the fitted groove on the upper surface of the Switch. For an easier fitting, first fit one side of the leaf spring, then press the other side into the fitting groove. (It will be easier mounting the leaf spring of one side first, then mount the other side.)  Insert the flange from the front surface of the panel.  The flange has two opposing guides to facilitate its insertion into the panel cutout hole. Be sure the flange does not remain tilted with respect to the panel surface after being installed.  While holding the flange, insert the opposing supports into the gaps between the leaf spring and Switch on the longer sides of the housing, and fit the rectangular hole of the flange with the projections of the switch housing.  Insert a small flat-bladed screwdriver or tweezers into the flange support exposed on the rear of the panel. Pry up on each side to pull out the Switch. Note: Be sure to fit the leaf spring exactly into the groove, and do not allow it to slip out of the groove. Note: The mounting direction of the flange determines the orientation of the Switch. Note: Completely remove any burrs on the panel cutout surface; otherwise, the flange and Switch will not attach solidly. Note: Do not pry up the flange support more than necessary or the switch holding portions may be damaged. Leaf spring Leaf spring fitting groove Switch Flange Guide Panel Flange Panel (t = 1 to 1.6 mm) Cross Section Support Panel Projection Panel Flat-bladed screwdriver or tweezers

A3A Lighted Pushbutton Switch A A

• Application examples provided in this document are for reference only. In actual applications, confirm equipment functions and safety before using the product.
• Consult your OMRON representative before using the product under conditions which are not described in the manual or applying the product to nuclear control systems, railroad systems, aviation systems, vehicles, combustion systems, medical equipment, amusement machines, safety equipment, and other systems or equipment that may have a serious influence on live s and property if used improperly. M ake sure th at the r atings and perform ance ch aracteristics of the prod uct provide a m argin of safety for the system or equipment, and be sure to provide the system or equipment with double safety mechanisms. OMRON Corporation Electronic and Mechanical Components Company Contact: www.omron.com/ecb Cat. No. A025-E1-05 0812(0207)(O) Note: Do not use this document to operate the Unit.