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Omron A3A Series, Instruction Manual

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Omron A3A Series Instruction Manual Download Page 2

2

A3A

Lighted Pushbutton Switch

A

3

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

φ

12.7

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

φ

12.7

Black

A3A-221

Light gray

A3A-222

Summary of Contents for A3A Series

Page 1: ...omprises the Pushbutton LED lamp built in and Switch For information on combinations refer to Ordering Information A 3 A A 9 0 K 1 00E R 1 Shape of Pushbutton 2 Terminal 3 Switch Specifications Symbol Shape A Square T Round Symbol Type 0 Solder 1 PCB Symbol Operation Contact type A Momentary SPDT 3 A at 125 VAC 2 A at 30 VDC B Alternate K Momentary SPST NO 6 A at 125 VAC 2 A at 250 VAC 4 A at 30 V...

Page 2: ...e 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 Colo...

Page 3: ... 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 operatio...

Page 4: ...erminals order them from your OMRON representative Refer to page 2 Pushbutton 1 Shape Square A3AA Switch 3 Ratings Standard load 1a 6 A at 125 VAC 2 A at 250 VAC 4 A at 30 VDC Standard load 1c 3 A at 125 VAC 2 A at 30 VDC 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 yel...

Page 5: ...sions 12 7 15 2 8 9 dia Round push button Two t0 4 terminals 8 9 Square push button 1 7 18 12 5 3 5 1 1 7 3 5 12 5 1 18 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 18 12 5 3 5 1 Two t0 3 LED terminals 1 7 3 5 12 5 1 18 Three t0 4 terminals Two t0 3 LED terminals LED Surface ...

Page 6: ...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 LED Surface Illumination Models 0 5 0 8 2 0 5 0 8 2 0 8 1 7 1 3 5 0 8 1 7 1 3 5 1 95 5 7 10 16 LED terminal L NC NO C L Non lighted Models Terminal Hole Dimensions Switch terminal t0 4 LED Surface Illumination Models Switch ter...

Page 7: ... 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 0 Square pushbutton Round pushbutton Horizontal multiple mounting Vertical multiple mounting 11 5 0 2 0 15 3 min 3 8 min 11 5 0 2 0 11 5 0 2 0 0 3 0 12 7 n 1 11 5 15 3 min 0 2 0 12 7 min 0 2 0 14 5 max 1 Flange Panel Leaf spring Recommended panel thickne...

Page 8: ... 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 wi...

Page 9: ... 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 Whil...

Page 10: ...1 07 0322 0207 Americas Europe https components omron com us en https components omron com eu en Asia Pacific China https components omron com sg en https components omron com cn Korea Japan https components omron com kr en https components omron com jp ja In the interest of product improvement specifications are subject to change without notice OMRON Corporation 2007 2022 All Rights Reserved ...

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