Panel–mounted Switches IA3G
A Range of 16mm ∅ Pushbutton,
Selector and Key Operated Switches
Modular construction eases installation and replace-
ment.
Lamp, LED and Neon illumination.
Contact block is available with solder, PCB or screw
terminals.
IP40 and IP65 versions.
UL, CSA and VDE approved.
Ordering Information
Pushbutton/Indicator
Screen Switch Unit Contact BlockIllumination
Selector Switch
Switch Unit Contact Block
Key Switch
Switch Unit Contact Block
Simply insert the switch unit for
complete connection.
Press the part indicated PUSH on the
switch unit and pull to remove. Align
white marks to insert.
Press
Press
Snap-in action switch unit greatly im-
proves wiring efficiency.
A3G A3G
Specifications
Contact
Type AC resistant load DC resistant load
General purpose
load AC 250V 3A
AC 125V 5A DC 30V 3A
Micro load* AC 125V 0.1A DC 30V 0.1A
Note: * Minimum load is 1mA at 5 VDC
LED
Rated voltage Rated currrent Operating voltage
DC 24V 10mA DC 24V 5%
DC 5V 30mA DC 5V 5%
DC 12V 15mA DC 12V 5%
Incandescent lamp
Rated voltage Rated currrent Operating voltage
6V 60mA 5V
14V 40mA 12V
18V 26mA 15V
28V 24mA 24V
Neon lamp
Rated voltage Rated currrent Operating voltage
AC 1 10V 1.5mA AC 100V 10%
AC 220V 1.5mA AC 200V 10%
Operating temperature –10_C to 55_C (with no icing)
Storage temperature –25_C to 65_C
Operating humidity 35 to 85% RH
Characteristics
Item Illuminated pushbutton
switch Pushbutton switch Knob-type selector switch* Key-type selector switch*
Allowable operating
frequency Mechanical Momentary operation: 120
operations/minute max.
Alternating operation: 60
operations/minute max.
20 operations/minute max.
Electrical 20 operations/minute max. 10 operations/minute max.
Insulation resistance 100MΩ min. (at 500VDC)
Dielectric strength 1,000VAC, 50/60Hz for 1 minute between terminals of same polarity
2,000VAC, 50/60Hz for 1 minute between terminals of different polarity and also between each
terminal and ground**
Vibration Malfunction 10 to 55Hz, 1.5mm double amplitude
Shock Durability Approx. 500m/s2 (50G)
Malfunction Approx. 150m/s2 (15G)
Life expectancy Mechanical Momentary operation:
2,000,000 operations min.
Alternating operation: 200,000
operations min.
250,000 operations min. 250,000 operations min.
(Life of key , 100,000
operations min.)
Electrical 100,000 operations min.
Degree of protection IP40/IP65 (Oil-resistant) IP65 (Oil-resistant)
Weight Approx. 13g (for illuminated
type 2-contact switches with
solder terminals)
Approx. 9g (for illuminated
type 2-contact switches) Approx. 40g (with one
2-contact switch key)
Note: * Set and reset constitute one operation. ** With LED and incandescent lamp not mounted.
Operating Characteristics
Type
F
ea
t
u
r
es
Illuminated
pushbutton switch Knob-type and key-type selector switches
Feat
u
res
IP40 IP65 oil-resistant type 2-notch 3-notch
SPDT DPDT SPDT DPDT
Operating force
(OF) max. 250g/245cN 450g/441cN 300g/294cN 500g/490cN 1,000g–cm
Releasing force (RF)
min. 30g/29.4cN
T otal travel (TT) Approx. 3mm
Pretravel (PT) max. 2.5mm
*Lock stroke (L T A)
min. 0.5mm
Set position (SP) – 90_±5_45_+10_
*Lock stroke is for alternating operation.
A3G A3G
Pushbutton/Indicator Switches
Screen
IP Rating IP40 IP65
Colour Rectangular Square Round Rectangular Square Round
Blue A3BJ–500A A3BA–500A A3BT–500A A3BJ–510A A3BA–510A A3BT–510A
Yellow A3BJ–500Y A3BA–500Y A3BT–500Y A3BJ–510Y A3BA–510Y A3BT–510Y
Red A3BJ–500R A3BA–500R A3BT–500R A3BJ–510R A3BA–510R A3BT–510R
Red (Neon) A3GJ–500D A3GA–500D A3GT–500D A3GJ–510D A3GA–510D A3GT–510D
Green (Lamp) A3BJ–500G A3BA–500G A3BT–500G A3BJ–510G A3BA–510G A3BT–510G
Green (LED) A3BJ–500GY A3BA–500GY A3BT–500GY A3BJ–510GY A3BA–510GY A3BT–510GY
Green (Neon) A3GJ–500GN A3GA–500GN A3GT–500GN A3GJ–510GN A3GA–510GN A3GT–510GN
White A3BJ–500W A3BA–500W A3BT–500W A3BJ–510W A3BA–510W A3BT–510W
White (Neon) A3GJ–500WN A3GA–500WN A3BT–500WN A3BT–500W
A3GJ–510WN A3GA–510WN A3GT–510WN
Black A3BJ–501B A3BA–501B A3BT–501w A3BJ–511B A3BA–511B A3BT–511B
Illumination
Voltage 5DC/6DC 12/14/18DC 24/28DC
Lamp/LED
Lamp (all
colours) A3B–006 A3B–014/018 A3B–028
LED – Red A3B–005R A3B–012R A3B–024R
LED – Green A3B–005G A3B–012G A3B–024G
LED – Y ellow A3B–005Y A3B–012Y A3B–24Y
LED – White A3B–005W A3B–012W A3B–024W
Voltage 110VAC 240VAC
Neon – Red A3BH–1ND A3BH–25ND
Neon – Green A3BH–1NG A3BH–25NG
Switch unit
IP Rating IP40 IP65
Switch type Rectangular Square Round Rectangular Square Round
Momentary A3GJ–6011–1 A3GA–6011–1 A3GT–6011–1 A3GJ–6011–3 A3GA–6011–3 A3GT–6011–3
Alternate A3GJ–6021–1 A3GA–6021–1 A3GT–6021–1 A3GJ–6021–3 A3GA–6021–3 A3GT–6021–3
Indicator M2GJ–7001–1 M2GA–7001–1 M2GT–7001–1 M2GJ–7001–3 M2GA–7001–3 M2GT–7001–3
Contact block Standard Micro-load Screw
terminals
SPDT A3G–4011 – –
–A3G–4111 –
DPDT A3G–4021 – –
–A3G–4121 A3G–4024
Indicator M2G–4901 – –
––M2G–4904
Note: For PCB terminals please contact OMRON.
A3G A3G
Selector Switches
Switch unit
Shape No. of notches Reset method Model
Rectangular (A3GJ) 2 notches Manual A3GJ–S511
g( )
Automatic A3GJ–S521
3 notches Manual A3GJ–S552
Combination A3GJ–S562
Combination A3GJ–S572
Automatic A3GJ–S582
Square (A3GA) 2 notches Manual A3GA–S511
q( )
Automatic A3GA–S521
3 notches Manual A3GA–S552
Combination A3GA–S562
Combination A3GA–S572
Automatic A3GA–S582
Round (A3GT) 2 notches Manual A3GT–S511
()
Automatic A3GT–S521
3 notches Manual A3GT–S552
Combination A3GT–S562
Combination A3GT–S572
Automatic A3GT–S582
Note: For illuminated types please contact OMRON.
Contact block Standard Micro-load Screw
terminals
SPDT A3G–4011 – –
–A3G–4111 –
DPDT A3G–4021 – –
–A3G–4121 A3G–4024
A3G A3G
Key Switches
Switch unit
Shape No. of notches Reset method Key release position Model
Rectangular (A3GJ) 2 notches Manual A3GJ–K511–C
A3GJ–K511–B
A3GJ–K511–G
Automatic A3GJ–K521–C
3 notches Manual A3GJ–K552–A
A3GJ–K552–B
A3GJ–K552–C
A3GJ–K552–F
Combination A3GJ–K562–A
A3GJ–K562–B
Combination A3GJ–K572–A
Combination
A3GJ–K572–C
Automatic A3GJ–K582–A
Square (A3GA) 2 notches Manual A3GA–K511–C
A3GA–K511–B
A3GA–K511–G
Automatic A3GA–K521–C
3 notches Manual A3GA–K552–A
A3GA–K552–B
A3GA–K552–C
A3GA–K552–F
Combination A3GA–K562–A
A3GA–K562–B
Combination A3GA–K572–A
Combination
A3GA–K572–C
Automatic A3GA–K582–A
Round (A3GT) 2 notches Manual A3GT–K511–C
A3GT–K511–B
A3GT–K511–G
Automatic A3GT–K521–C
3 notches Manual A3GT–K552–A
A3GT–K552–B
A3GT–K552–C
A3GT–K552–F
Combination A3GT–K562–A
Combination
A3GT–K562–B
Combination A3GT–K572–A
Combination
A3GT–K572–C
Automatic A3GT–K582–A
Note: For illuminated types please contact OMRON.
A3G A3G
Contact block
See table of Contact Block on previous page.
Terminal Arrangement
(Bottom View)
Do not connect L+
and L– terminals for
non-illuminated type
Dimensions
Pushbutton/Indicator
Switch
Selector
Switch
Key
Switch
A3G A3G
Assembly/Disassembly
Mounting and Replacing Pushbutton
Unit
Mounting directions for the LED/lamp and
screen
The OMRON screen doubles the roles in which a pushbutton switch
is normally used. The screen may be inserted one of two ways:
1. For operation as a lighted pushbutton switch, fit the LED/lamp
so that its guide projection is inserted into the wider opening in
the receptacle of the screen. Projection LED/lamp
guide
LED/lamp
guide
2. For operation as an indicator unit, insert the LED/lamp guide
projection into the narrower opening in the indicator unit’s
receptacle. Push the projection of the LED/lamp in the groove
of the screen so that the LED/lamp is firmly inserted into the
screen of the indicator unit.
LED/lamp
guide
Groove of the indicator unit
Projection of the LED/lamp
Note: The inserting direction of the LED/lamp for the screen is op-
posite to that for the indicator unit. Pay attention to the
mounting direction of the legend plate.
Removal directions for the LED/lamp and
screen
Position the pushbutton unit as shown in (1). Press down on the LED/
lamp angling it in the direction indicated by A. Side B of the LED/lamp
disconnects and side C angles away from the screen so that it looks
like (2). Turn the LED/lamp in the direction indicated by D. The LED/
lamp projections (two locations) will disconnect from the LED/lamp
groove so that it looks like (3). Pull in the E direction and remove the
LED/lamp.
LED/lamp projections dis-
connected from their
grooves.
(1) (2)
(3) (4) E
A
B
CD
LED/lamp
Mounting pushbutton unit into switch unit
Insert the LED/lamp unit into the aperture of the switch with the LED/
lamp unit’s guide facing the side of the aperture mouth that does not
have the two projections. The pressure applied during insertion
should be 2.5kg minimum.
Removing the pushbutton unit
While holding the recessed portions on both sides, firmly and steadily
pull out the top of the screen with your thumb and forefinger . Pulling
out the cap with pliers or a similar tool will damage the cap.
Recess
guide
Bezel Rotation
A3G–S and A3G–K.
•Twist the knob/key while holding the lock fitting to turn the bezel in
45_ increments.
A3G A3G
Mounting the Panel
Mounting the switch unit on panel
Nut mounting
•Insert the switch unit from the front of the panel. Place the lock
fitting and mounting nut on the terminal side and tighten the
mounting nut. For the IP65 type use the rubber seal. T ighten the
mounting nut to a torque of 10kg–cm or less.
Mounting Contact Block
After installing the main unit, mount the contact block from the back of
the panel (by snapping into place).
Mounting the contact block
•Push contact block into the
main unit.
•There is a direction to fit.
•Adjust the white mark of both
main unit and contact block
so that they align.
Removing the contact block
•Press the lock button of the contact block
and pull to remove.
•Pull straight, not at an angle.
White marks
Precautions
Mounting
Apply less than 10kg/cm of fastening torque to secure the mounting
ring.
Wiring
When soldering, apply a soldering iron rated at 30W quickly (within 5
secs) or within 3 seconds with a tip temperature of 240_C. Do not ap-
ply any external force to the switch for 1 minute after soldering to
avoid possible plastic deformation.
Use a non-corrosive resin-type flux.
Operating environment
The protective structure of the IP65 prevents damage due to dust
from the front of the panel into the interior or direct spraying of water
from any direction.
Lamps
Applying a voltage greater than the rated voltage to the lamp termi-
nals will damage the LED. As the LED polarity is marked on the back
of the switches connect the switches accordingly. The neon lamp
normally operates on AC.
Others
The oil-resistant type (IP65) was evaluated with cutting and cooling
oils in general use, and it may not be resistant to special types of oil.
When using other oils, be sure to contact your OMRON representa-
tive.
Operation of selector/key switches
Apply less than 5kg–cm of torque when operating selector and key
switches.
