ILLUMINATED & SEALED PUSHBUTTONS
MOMENTARY ACTION COMMERCIAL GRADE LED ILLUMINATED & SEALED
ILLUMINATED
PUSHBUTTONS
LP3
Raised Dome
Front Mount
The LP3 offers rugged, sealed construction with the added
benefit of reliable LED illumination. This precision snap-action
switch is designed for use in off-highway, material handling, in-
dustrial controls, marine, medical and demanding commercial
applications. Choose from the standard mounting styles and
electrical ratings, or contact us for custom configurations.
On sealed models, a silicone boot operating on our patented
“rolling sleeve” principle protects the contact area against
contamination at the button area. This boot provides long life
and smooth operation over a wide temperature range. Sealed
terminals protect the contact area from hostile environments and
solder flux on both sealed and unsealed models.
High contact pressure, amazingly low contact resistance and ex-
tremely low contact bounce are all the result of the OTTO snap-
action mechanism. Extra long electrical life and precise trip point
offer added value and precision operation.
Standard Characteristics/Ratings:
ELECTRICAL RATINGS:
Load
Resistive
Inductive
Lamp
Motor
DWV
Low Level
Electrical Life:
Sea Level @ 28VDC or 115VAC, 60/400Hz
5A
3A
1A
3A
1050Vrms through switch contacts only
10mA @ 30mV
25,000 cycles
LIGHTING:
Light Source Voltage (DC)
2
6
12
24
Mechanical Life:
Seal:
Operating Force:
Total Travel:
Overtravel:
Actual Voltage Nominal (DC)
2
7
13.5
28
250,000 cycles @ +85°C
25,000 cycles @ -40°C
IP64 or IP68S
2.5 +/- .5 lbs. or 5.0 +/- 1.0 lb.
0.080 inches max
0.010 inches min
Voltage Max (DC)
2.6
8
14.5
28.6
Features:
• Watertight to IP68S or moistureproof & dusttight to IP64
• LED lighted with the ability to accommodate 2, 6, 12 &
24VDC power & includes reverse voltage protection
• Tall & dome style buttons permitting sublimated & pad
printed legends
• Less than 25mΩ contact resistance, low level option
• Quick disconnect terminals
• 15/32” & 5/8” thread, press fit & dome case options
• RoHS/WEEE/Reach compliant
Operating Temp Range:
-40°C to +85°C
MATERIALS:
Case:
Button:
Terminals:
Mounting Hardware:
Anodized aluminum alloy
Thermoplastic
Standard and low level options available
Hex nut, lockwasher and panel gasket when applicable
LP3
Case Style
Exposed Dome
Flush Dome
Raised Dome
Press Fit Mount
5/8” Thread
Front Mount
4.
15/32” Thread
Rear Mount
6.
5/8” Thread
Rear Mount
E.
F.
R.
1.
3.
–
X
X
LP3 PART NUMBER CODE
X
X
X
Operating Force
2.
2.5 ± .5 lbs.
5.
5.0 ± 1 lbs.
X
Case Color
1.
Silver
2.
Black
X
Button Color
–
XX
Legend Style
Refer to Legend Table
for legend codes in
Appendix. Legends
will be printed in
white on amber and
red buttons and in
black on white buttons.
Circuit Rating
1.
SPST N.O./Std.
2.
SPST N.C./Std.
3.
SPDT 2 Circuit/Std.
4.
SPST N.O./Low Level
5.
SPST N.C./Low Level
6.
SPDT 2 Circuit/Low Level
Light Source Type*
Seal Level
w/ Rev. Pol Protection
A.
2V Red LED
B.
2V Green LED
C.
2V Amber LED
D.
6V Red LED
E.
6V Green LED
F.
6V Amber LED
G.
12V Red LED
H.
12V Green LED
J.
12V Amber LED
K.
24V Red LED
L.
24V Green LED
M.
24V Amber LED
N.
2V Blue LED
P.
6V Blue LED
Q.
12V Blue LED
R.
24V Blue LED
S.
2V Deep Green LED
T.
6V Deep Green LED
U.
12V Deep Green LED
V.
24V Deep Green LED
1.
Unsealed
2.
Dusttight
3.
Watertight
A.
Amber, Translucent
(use Amber LED)
R.
Red, Translucent
(use Red LED)
W.
White, Translucent
PUSHBUTTONS
* For super bright LEDs, contact factory.
STOP HERE
for
illuminated switches
without legends.
Specifications Subject To Change Without Notice
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90
LP3
ILLUMINATED
PUSHBUTTONS
ILLUMINATED & SEALED PUSHBUTTONS
MOMENTARY ACTION COMMERCIAL GRADE LED ILLUMINATED & SEALED
LP3-E
Momentary, Exposed Dome Button
NORMALLY OPEN
TERMINALS
NORMALLY CLOSED
TERMINALS
(.380)
(1.247)
.062
1.046
.020 (TYP.)
.563
.110 (TYP.)
LED ANODE (+)
LED CATHODE (-)
5/8-24 UNEF-2A
TO WITHIN .062
OF FLANGE.
.44
(.442)
1.677 MAX.
2.120 MAX.
.730
LP3-F
Momentary, Flush Dome Button
NORMALLY OPEN
(.380)
TERMINALS
NORMALLY CLOSED
TERMINALS
(1.197)
1.046
.020 (TYP)
.563
.110 (TYP)
LED ANODE (+)
LED CATHODE (-)
5/8-24 UNEF-2A
TO WITHIN .062
OF FLANGE.
.44
(.492)
.730
1.627 MAX.
2.120 MAX.
LP3-R
Momentary, Raised Dome Button
NORMALLY OPEN
TERMINALS
NORMALLY CLOSED
TERMINALS
2.120 MAX.
(.380)
(1.177)
.44
1.046
.020(TYP)
.563
.110(TYP)
LED ANODE (+)
LED CATHODE (-)
5/8-24 UNEF-2A
TO WITHIN .062
OF FLANGE.
1.607 MAX.
(.512)
.730
LP3-1
Momentary, Press Fit Mount
NORMALLY OPEN
TERMINALS
2.150 MAX.
(.380)
NORMALLY CLOSED
6X .020
TERMINALS
(1.408)
(.312)
.563
LED ANODE (+)
6X .110
.375
.624±.001
.500
LED CATHODE (-)
.250
1.838 MAX.
.25
91
OTTO Full Line Catalog
Specifications Subject To Change Without Notice
ILLUMINATED & SEALED PUSHBUTTONS
MOMENTARY ACTION COMMERCIAL GRADE LED ILLUMINATED & SEALED
ILLUMINATED
PUSHBUTTONS
LP3
LP3-3
Momentary, 5/8” Threaded Front Mount
NORMALLY OPEN
NORMALLY CLOSED
TERMINALS
TERMINALS
(.380)
(1.283)
(.437)
.875
.500
.310
.25
6X .020
.563
6X .110
LED ANODE (+)
LED CATHODE (-)
5/8-24 UNEF-2A TO
WITHIN .062 OF FLANGE
1.713 MAX.
2.150 MAX.
.187
.375
LP3-4
Momentary, 15/32” Threaded Rear Mount
NORMALLY OPEN
TERMINALS
NORMALLY
CLOSED
TERMINALS
(.380)
6X .020
(1.130)
.34
.25
.563
6X .110
.375
LED CATHODE (-)
LED ANODE (+)
15/32-32 UNS-2A
TO WITHIN .062
OF FLANGE
1.560 MAX.
2.150 MAX.
LP3-6
Momentary, 5/8” Threaded Rear Mount
(.380)
NORMALLY OPEN
NORMALLY
TERMINALS
CLOSED
6X .020
TERMINALS
6X .110
(1.033)
(.687)
.875
.25
.563
.375
LED CATHODE (-)
LED ANODE (+)
5/8-24 UNEF-2A
TO WITHIN .062
OF FLANGE
.500
1.463 MAX.
2.150 MAX.
.375
NOTE:
For indicator light only,
see LPL indicator light pages 105-107.
PUSHBUTTONS
ANODE (+)
SPST-NO-DB
SCHEMATIC
SPST-NC-DB
SCHEMATIC
SPDT-DB
SCHEMATIC
CATHODE (-)
LIGHTING
SCHEMATIC (DC)
Specifications Subject To Change Without Notice
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92
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