Lighted Pushbutton Switch A3A | OMRON Electronic Components Web

List of Models
SPST-NO

Terminal	Action	Illumination	Model	Color
Solder	Momentary	Non-lighted	A3AA-90K1-00□	( Non-lighted) R: red Y: yellow G: green L: light gray (see note) A: blue (see note) B: black (see note) D: dark gray (see note) H: gray (see note) (Lighted) R: red Y: yellow G: green
	Momentary	Surface illumination	A3AA-90K1-00E□
	Alternate	Non-lighted	A3AA-90L1-00□
	Alternate	Surface illumination	A3AA-90L1-00E□
PCB	Momentary	Non-lighted	A3AA-91K1-00□
	Momentary	Surface illumination	A3AA-91K1-00E□
	Alternate	Non-lighted	A3AA-91L1-00□
	Alternate	Surface illumination	A3AA-91L1-00E□
Solder	Momentary	Non-lighted	A3AT-90K1-00□
	Momentary	Surface illumination	A3AT-90K1-00E□
	Alternate	Non-lighted	A3AT-90L1-00□
	Alternate	Surface illumination	A3AT-90L1-00E□
PCB	Momentary	Non-lighted	A3AT-91K1-00□
	Momentary	Surface illumination	A3AT-91K1-00E□
	Alternate	Non-lighted	A3AT-91L1-00□
	Alternate	Surface illumination	A3AT-91L1-00E□

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

Terminal	Action	Illumination	Model	Color
Solder	Momentary	Non-lighted	A3AA-90A1-00□	R: red Y: yellow G: green L: light gray (see note) A: blue (see note) B: black (see note) D: dark gray (see note) H: gray (see note) (Lighted) R: red Y: yellow G: green
	Momentary	Surface illumination	A3AA-90A1-00E□
	Alternate	Non-lighted	A3AA-90B1-00□
	Alternate	Surface illumination	A3AA-90B1-00E□
PCB	Momentary	Non-lighted	A3AA-91A1-00□
	Momentary	Surface illumination	A3AA-91A1-00E□
	Alternate	Non-lighted	A3AA-91B1-00□
	Alternate	Surface illumination	A3AA-91B1-00E□
Solder	Momentary	Non-lighted	A3AT-90A1-00□
	Momentary	Surface illumination	A3AT-90A1-00E□
	Alternate	Non-lighted	A3AT-90B1-00□
	Alternate	Surface illumination	A3AT-90B1-00E□
PCB	Momentary	Non-lighted	A3AT-91A1-00□
	Momentary	Surface illumination	A3AT-91A1-00E□
	Alternate	Non-lighted	A3AT-91B1-00□
	Alternate	Surface illumination	A3AT-91B1-00E□

Note:

The above models each have a SPDT contact that can switch 3 A at 125 VAC and 2 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.

Specifications
Contact Ratings

Type	Contact form	Resistive load
High capacity	SPST-NO	6 A at 125 VAC 2 A at 250 VAC	4 A at 30 VDC

Note:	1.	Minimum allowable load: 5 VDC 1 mA (Resistive)
	2.	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 Ratings

Item		Surface illumination
Item		Red	Yellow	Green
Forward voltage VF	Standard value	2.0 V	2.1 V	2.1 V
Forward voltage VF	Maximum value	3 V
Forward current IF	Standard value	10 mA
Forward current IF	Maximum value	20 mA	25 mA	25 mA
Permissible loss PD	Absolute max. value	60 mW	75 mW	75 mW
Reverse voltage VR	Absolute max. value	3 V

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.

Characteristics

Operating frequency

Mechanical:
	Momentary action: 120 operations/minute max.
	Alternate action: 60 operations/minute max. (See note 1.)
Electrical: 20 operations/minute max.

Insulation resistance

100 MΩ min. (at 500 VDC)

Contact resistance

100 mΩ max. (initial value)

Dielectric strength

600 VAC, 50/60 Hz for 1 min between terminals of same polarity
2,000 VAC, 50/60 Hz for 1 min between each terminal and ground
600 VAC, 50/60 Hz for 1 min between LED terminals (See note 2.)

Vibration resistance

Malfunction: 10 to 55 Hz, 1.5-mm double amplitude (See note 3.)

Shock resistance

Destruction: 500 m/s2
Malfunction: 150 m/s2 (See note 3.)

Life expectancy

Mechanical:
	Momentary action: 1,000,000 operations min.
	Alternate action: 50,000 operations min. (See note 1.)
Electrical: 50,000 operations min.

Weight

Approx. 3.2 g

Ambient temperature

Operating: −10°C to 55°C (with no icing)
Storage: −25°C to 65°C

Ambient humidity

Operating: 35% to 85%

Degree of protection

IP00

Electric shock protection class

Class II

PTI (proof tracking index)

175

Pollution degree

3 (IEC947-5-1)

Note:	1.	With alternate-action models, a setting and resetting is regarded as one operation.
	2.	The figure for the dielectric strength between LED terminals in the above table is for when the LED is not installed in the Switch.
	3.	The figures for malfunctions in the above table are for malfunctions of at least 1 ms.

Dimensions

Note:	1.	All units are in millimeters unless otherwise indicated.
	2.	The illustrations below show switches with solder terminals, without a flange or leaf spring.