Datasheet
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B-272
APEM
Switches & 
Pilot Lights
Control Boxes
Emergency 
Stop Switches
Enabling 
Switches
Safety Products
Explosion Proof
Terminal Blocks
Relays & Sockets
Circuit 
Protectors
Power Supplies
LED Illumination
Controllers
Operator 
Interfaces
Sensors
AUTO-ID
Switches & Pilot Lights
Flush Silhouette
ø16
ø22
ø30
Miniature
Pilot Lights
HW
TW
YW
ø22 YW Series Switches & Pilot Lights
Specifications
Operating 
Conditions
Operating temperature: –20 to +55°C (no freezing)
Operating humidity: 45 to 85% RH (no condensation)
Storage temperature: –45 to +80°C
Storage humidity: 95% RH maximum
Degree of 
Protection
From panel front: IP65 (IEC 60529)
Terminal: IP20 (IEC 60529)
Insulation
Resistance
100 MΩ
Dielectric 
Strength
Contact block: 2,500V, 1 minute
Pilot light: 2,000V, 1 minute
Vibration 
Resistance
<Emergency stop switch>
Operating extremes / Damage limits:
10 to 500 Hz, amplitude 0.35 mm. acceleration 50 m/s
2 
(5G)
<Pushbutton, pilot light, illluminated pushbutton, selector 
switch, and key selector switch>
Operating extremes: 5 to 55 Hz, amplitude 0.5 mm
Damage limits: 30 Hz, amplitude 1.5 mm
Shock 
Resistance
<Emergency stop switch>
Operating extremes: 150 m/s
2
 (10G)
Damage limits: 1,000 m/s
2
 (100G)
<Pushbutton, pilot light, illluminated pushbutton, selector 
switch, and key selector switch>
Operating extremes: 100 m/s
2
 (10G)
Damage limits: 1,000 m/s
2
 (100G)
Mechanical 
Life (minimum 
operations)
<Emergency stop switch>
   250,000 (single contact block)
<Pushbutton and illuminated pushbutton>
Momentary:  5,000,000 (single contact block)
   1,000,000 (double contact block)
Maintained: 250,000 (single contact block)
   100,000 (double contact block)
<Selector switch and key selector switch>
   250,000 (single contact block)
   100,000 (double contact block)
Electrical Life 
(minimum 
operations)
<Emergency stop switch>
  100,000 (single contact block)
<Pushbutton, selector switch, and key selector switch>
  100,000 (single contact block)
  50,000 (double contact block)
Mounting Hole Layout
R0.8 max.
0
+0.4
+0.4
0
+0.2
0
ø22.
3
3.2
24.1
A
B
The 3.2-mm-wide key recess 
is necessary
 when the anti-rotation 
ring is used.
Unit A (mm) B (mm)
Emergency stop switch 50 min. 50 min.
Pushbutton
Selector switch
Key selector switch
50 min. 30 min.
Mushroom pushbutton 50 min. 40 min.
Pilot light (with removable lamp terminal) 30 min.∗ 30 min.
Pilot light (unibody) 50 min. 30 min.
∗ Keep a minimum spacing of 50 mm when using a lamp of over 1W.
Incandescent Illuminated Unit Specifications
Pilot Light (removable lamp terminal type) 
Illuminated Pushbutton
Unit Incandescent Lamp
Unit Type Input Type Rated Voltage Operating Voltage Color Code Lamp Base Part No. Rating
Pilot Light 
(removable lamp 
terminal type)
Illuminated 
Pushbutton
Full Voltage
6V AC/DC 6V AC/DC
±10%
A:
  amber
G:  green
R:  red
S:  blue
W: white
Y:  yellow
BA9S/13
LS-T6
1W (6.3V)
12V AC/DC 12V AC/DC
LS-T8
1W (18V) 
24V AC/DC 24V AC/DC
LS-T3
1W (30V) 
Transformer 
(pilot light only)
50/60 Hz
100/110V AC 100/110V AC
LS-T6
1W (6.3V)
200/220V AC 200/220V AC
115/120V AC 115/120V AC
230/240V AC 207 to 250V AC
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