A3CT-7021 - OMRON INDUSTRIAL AUTOMATION

Lighted Pushbutton Switch A3C

Cylindrical 12-dia. Series with Superb

Operability, High Visibility, and Compact

Housing

Three models of pushbutton units (round, square,

and rectangular), two types of light-emitting

elements (LED and lamp), and two types of switch

units(switching general-purposeandmicrocurrent/

voltage loads) available.

Models that can be used as an indicator also

available.

Requires only 20 mm mounting depth

Efficiency in wiring improved by terminals arranged

on the same surface.

All LEDs, lamps, lenses, and legends replaceable

without tools

UL (E41515) and CSA (LR45258-31) approved

Ordering Information

Lighted Type

Whenplacingyourorder,specify theindividualcomponent partmodelnumbers ofthepushbuttonunit,LED,lamp, andswitch unit,as listedin

the ordering tables below.

Non-lighted Type

When placing your order, specify the model numbers of the pushbutton and switch units.

Pushbutton Unit Switch Unit

A3Cj-501jA3Cjj-7jjj

A3C A3C

Lighted Pushbutton Unit

LED

Button color Rectangular Square Round

Red A3CJ-500R A3CA-500R A3CT-500R

Yellow A3CJ-500Y A3CA-500Y A3CT-500Y

Green A3CJ-500GY A3CA-500GY A3CT-500GY

White A3CJ-500W A3CA-500W A3CT-500W

Note: With the exception of green, all pushbutton units can be

usedwitheitherLEDorincandescentlamps.Sincethehue

of green changes with an incandescent light source, use

the green LED light source listed elsewhere.

Incandescent Lamp

Button color Rectangular Square Round

Red A3CJ-500R A3CA-500R A3CT-500R

Yellow A3CJ-500Y A3CA-500Y A3CT-500Y

Green A3CJ-500G A3CA-500G A3CT-500G

White A3CJ-500W A3CA-500W A3CT-500W

Blue A3CJ-500A A3CA-500A A3CT-500A

Non-lighted Type

Button color Rectangular Square Round

Red A3CJ-500R A3CA-500R A3CT-500R

Yellow A3CJ-500Y A3CA-500Y A3CT-500Y

Green A3CJ-500G A3CA-500G A3CT-500G

White A3CJ-500W A3CA-500W A3CT-500W

Blue A3CJ-500A A3CA-500A A3CT-500A

Black A3CJ-500B A3CA-500B A3CT-500B

Indicator (Same as A3B)

LED

Color Rated voltage

5VDC 12 VDC 24 VDC

Red A3B-005R A3B-012R A3B-024R

Yellow A3B-005Y A3B-012Y A3B-024Y

Green A3B-005G A3B-012G A3B-024G

White A3B-005W A3B-012W A3B-024W

Incandescent Lamp

Rated voltage 6VDC 14 VDC 28 VDC

Model A3B-006 A3B-014 A3B-028

Switch Unit

Configuration Contact Switch action Terminal Degree of protection: IP00

Rectangular Square Round

General SPST-NO+

Momentary Solder A3CJ-7011 A3CA-7011 A3CT-7011

purpose SPST-NC Alternate A3CJ-7021 A3CA-7021 A3CT-7021

Micro-load Momentary Solder A3CJ-7111 A3CA-7111 A3CT-7111

PCB A3CJ-7112 A3CA-7112 A3CT-7112

Alternate Solder A3CJ-7121 A3CA-7121 A3CT-7121

PCB A3CJ-7122 A3CA-7122 A3CT-7122

For indication only (no switch) Solder M2CJ-7001 M2CA-7001 M2CT-7001

(

)

PCB M2CJ-7002 M2CA-7002 M2CT-7002

A3C A3C

Specifications

Contact Ratings

Model Item

AC resistive load DC resistive load

General-purpose

load 0.5 A, 250 VAC

1 A, 125 VAC 1A,30VDC

Micro

current/voltage

load (see note)

0.1 A, 125 VAC 0.1A,30VDC

Note: The minimum permissible load is 1 mA, 5 VDC.

LED Ratings

Rated voltage Rated current Operating voltage

5VDC 30 mA 5VDC

!5%

12 VDC 15 mA 12 VDC!5%

24 VDC 10 mA 24 VDC!5%

Lamp Ratings

Rated voltage Rated current Operating voltage

6V 60 mA 5V

14 V 40 mA 12 V

28 V 24 mA 24 V

Applicable Load Range

Characteristics

Operating frequency Mechanical:

Momentary-action type: 120 operations per minute max.

Alternate-action type: 60 operations per minute max.

Electrical: 20 operations per minute max.

Insulation resistance 100 M"min. (at 500 VDC)

Dielectric strength 1,000 VAC, 50/60 Hz for 1 minute between terminals of same polarity

2,000 VAC, 50/60 Hz for 1 minute between terminals of different polarity and also between

each terminal and ground

Vibration Mechanical/malfunction durability: 10 to 55 Hz, 1.5 mm double amplitude

Shock Mechanical durability: 500 m/s2(approx. 50 G)

Malfunction durability: 150 m/s2(approx. 15 G)

Ambient temperature Operating: --10#Cto55

Humidity 35 to 85% RH

Life expectancy Mechanical:

Momentary-action type: 1,000,000 operations min.

Alternate-action type: 100,000 operations min.

Electrical: 100,000 operations min.

Weight Approx. 5 g (see note)

Note: The weight indicated here applies to the lighted type (SPST-NO+SPST-NC).

Operating Characteristics

OF max. 250 g

RF min. 30 g

TT 3.5!0.5 mm

LTA min. 0.5 mm

PT max. 2.5 mm

Approved by Standards

UL (File No. E41515)

CSA (File No. LR45258-31)

Rating

General-purpose Type

1 A, 125 VAC

0.5 A, 250 VAC

1A,30VDC

Microcurrent/Voltage Load

0.1 A, 125 VAC

0.1A,30VDC

A3C A3C

Dimensions

The following dimensions apply to the switch unit with SPST-NO+SPST-NC contact configuration, with solder terminals.

Rectangular

A3CJ

Square

A3CA

Round

A3CT

Legend Plate

A3CJ A3CA A3CT

Panel cutout

15 min.

Note: 1. The thickness is 0.8 mm.

2. Since the legend plate is made of polycarbonate, use alcohol-based paints such as melanin, phthalic acid, or acryl paint when

marking the legend.

A3C A3C

Terminals/Connections

Terminal Type

SPST-NO+SPST-NC For indication

Solder terminal Lighted type, non-lighted type

Terminal hole (bottom view)

Indicator

Terminal hole

(bottom view)

PCB terminal Lighted type, non-lighted type

Mounting hole

(bottom view) (bottom view)

6.1

Indicator

Mounting hole

(bottom view) (bottom view)

A3C A3C

Accessories (Order Separately)

Name Shape Classification Model Remarks

Socket Wire-wrap terminal A3B-4101 Cannot be used with insulation cover.

PCB terminal A3C-4102

Solder terminal A3C-4103

Insulation

Cover --- A3C-3002 Cannot be used with socket.

Switch

Guard Rectangular A3CJ-5050 Cannot be used with seal cover.

Dust Cover For all shapes A3CJ-5060 Cannot be used with seal cover.

Tightening

Tool --- A3C-3004 Useful for mounting switch units one

after another. Do not over-tighten.

Extractor --- A3PJ-5080 Cannot be used with seal cover.

Legend

Rectangular A3CJ-5201 One legend plate is supplied per

Plate Square A3CA-5201

standard switch unit.

Round A3CT-5201

Dimensions with Socket

Wire-wrap Terminal PCB Terminal Solder Terminal

Terminal Hole Mounting Hole (Bottom View)

A3C A3C

Dimensions with Switch Guard

Panel Cutout (Top View)

Dimensions with Insulation Cover

The following dimensions apply to the rectangular pushbutton unit.

After mounting the switch unit on a panel, and after tightening the

mounting nut, insert the lead wires into the hole on the insulation

cover before wiring.

Aligntheinsulationcoversothatthecylindricalportionoftheinsula-

tion cover will face the switch unit. This means that the lead wires

willbeinsertedfromthebarriersideoftheinsulationcover.Afterwir-

ing has been completed, slide the insulation cover over the switch

unit.

Insulation cover attached to switch

Assembly/Disassembly

Mounting and Replacing Pushbutton Unit

Mounting directions for the LED/lamp and pushbutton unit

TheOMRONPushbuttonUnitdoublestherolesinwhichapushbut-

ton switch is normally used. The pushbutton unit may be inserted

one of two ways:

1. Foroperationasalightedpushbuttonswitch,fittheLED/lamp

sopthatitsguideprojectionisinsertedintothewideropening

in the receptacle of the pushbutton unit.

2. For operation as an indicator unit, insert the LED/lamp guide

projection into the narrower opening in the indicator unit’s

receptacle.PushtheprojectionoftheLED/lampinthegroove

of the pushbutton unit so that the LED/lamp is firmly inserted

into the pushbutton unit of the indicator unit.

Note: The inserting direction of the LED/lamp for the pushbutton

unit is the opposite of that for the indicator unit. Pay atten-

tion to the mounting direction of the legend plate.

A3C A3C

Removing the Pushbutton Unit

Withyourthumbandforefinger,whileholdingtherecessedportions

on both sides, firmly and steadily pull out the top of the pushbutton

unit. Pulling out the cap with pliers or a similar tool will damage the

cap.

Mounting Switch Unit on Panel

Nut Mounting

$Insert the switch unit from the front of the panel and tighten the

mounting nut inserted from the rear of the panel.

$Since a projection exists on the rear portion of the switch unit, if

the mounting nut cannot be fitted into position, turn the nut

slightly.

$The tightening torque of the mounting nut should be less than

5kg-cm.

$Solder the terminals after mounting the nut. Otherwise, the

terminals, when thickened by solder, may prevent the nut from

being screwed down onto the switch unit.

Wiring

$Finishsolderingwithin5secondswitha30wattsolderingiron,or

within 3 seconds at a solder temperature of 240#C. For about a

minute after soldering, do not apply any force to the switch unit,

to avoid deforming the softened plastic switch unit base.

$Use a non-corrosive, resin-based soldering flux.

Construction

ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.

To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.

Cat. No. A030-E1-3