LP3
ILLUMINATED
PUSHBUTTONS
ILLUMINATED & SEALED PUSHBUTTONS
MOMENTARY ACTION COMMERCIAL GRADE LED ILLUMINATED & SEALED
The LP3 offers rugged, sealed construction with the added
benefit of reliable LED illumination.
The LP3 is a precision snap-action switch designed for use in off-
highway, material handling, industrial 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 (25mΩ max, standard)
contact resistance and extremely low contact bounce are all
the result of the OTTO patented snap-action mechanism. Extra
long electrical life and precise trip point offer added value and
precision operation.
Front Mount
Raised Dome
®
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
10mA @ 30mV
25,000 cycles
Features:
• Watertight to IP68S; moistureproof & dusttight to IP64
• LED lighted with the ability to accommodate 2, 6, 12 &
24VDC power & includes reverse voltage protection
• Tall & dome style buttons in translucent white,
red & amber permitting sublimated & pad
printed legends
• Less than 25mΩ contact resistance
• Quick disconnect terminals
• 15/32" & 5/8" thread, press fit & dome case
styles available
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 @ -55°C
IP64 or IP68S
2.5 +/- 1.5 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
Operating Temp Range:
-55°C to +85°C
MATERIALS:
Case:
Button:
Terminals:
Mounting Hardware:
Anodized aluminum alloy
Thermoplastic
Standard silver plate with optional gold plating
for low level applications
Hex nut, lockwasher and panel gasket when applicable
LP3 PART NUMBER CODE
LP3
Case Style
E.
F.
R.
1.
3.
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
–
X
X
X
X
X
Operating Force
2.
2.5 lbs.
5.
5.0 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.
SPST 2 Circuit/Std.
4.
SPST N.O./Low Level
5.
SPST N.C./Low Level
6.
SPST 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
1.
Unsealed
2.
Dusttight
3.
Watertight
A.
Amber, Translucent
(use Amber LED)
R.
Red, Translucent
(use Red LED)
W.White,
Translucent
STOP HERE
for
illuminated
switches
without legends.
* For super bright LEDs, contact factory.
Specifications Subject To Change Without Notice
56
OTTO Full Line Catalog
ILLUMINATED & SEALED PUSHBUTTONS
MOMENTARY ACTION COMMERCIAL GRADE LED ILLUMINATED & SEALED
LP3
ILLUMINATED
PUSHBUTTONS
PUSHBUTTONS
LP3-E
Momentary, Exposed Dome Button
NORMALLY OPEN
TERMINALS
.380 REF.
NORMALLY CLOSED
TERMINALS
.020 (TYP)
1.247 REF.
.062
Ø 1.046
.110 (TYP)
LED ANODE (+)
Ø .570
LED CATHODE (-)
.625-24 UNEF-2A THD. TO
WITHIN .062 OF FLANGE
.44
1.677 MAX.
.442
REF.
Ø .730
NOTE:
For indicator light only, see LP5 series.
2.120 MAX.
LP3-F
Momentary, Flush Dome Button
NORMALLY OPEN
TERMINALS
.380 RE F.
NORMALLY CLOSED
TERMINALS
.020 (TYP)
.110 (TYP)
1.197 REF.
Ø 1.046
LED ANODE (+)
Ø .570
LED CATHODE (-)
.625-24 UNEF-2A THD. TO
WITHIN .062 OF FLANGE
Ø .730
1.627 MAX.
2.120 MAX.
.492
REF
LP3-R
Momentary, Raised Dome Button
NORMALLY OPEN
TERMINALS
.380 REF.
NORMALLY CLOSED
TERMINALS
.020 (TYP)
2.120 MAX.
1.177 REF.
Ø 1.046
.44
.110 (TYP)
LED ANODE (+)
LED CATHODE (-)
Ø .570
.625-24 UNEF-2A THD. TO
WITHIN .062 OF FLANGE
1.607 MAX.
.512
REF
Ø .730
LP3-1
Momentary, Press Fit Mount
NORMALLY OPEN
TERMINALS
.380 REF.
NORMALLY CLOSED
.020 (TYP)
TERMINALS
2.150 MAX.
1.408 REF.
.312
REF.
Ø .624
±.001
Ø .375
Ø .570 .110 (TYP)
LED ANODE (+)
LED C ATHODE (-)
1.838 MAX.
.250
.25
Ø .500
Specifications Subject To Change Without Notice
www.ottoexcellence.com
57
LP3
ILLUMINATED
PUSHBUTTONS
ILLUMINATED & SEALED PUSHBUTTONS
MOMENTARY ACTION COMMERCIAL GRADE LED ILLUMINATED & SEALED
LP3-3
Momentary, 5/8” Threaded Front Mount
.380 RE F.
NORMALLY OPEN
TERMINALS
NORMALLY CLOSED
TERMINALS
.020 (TYP)
1.283 REF.
.310
.437
REF.
.25
Ø .875
Ø .500
Ø .570 .110 (TYP)
LED CATHODE (-)
LED ANODE (+)
.625-24 UNEF-2A THD. TO
WITHIN .062 OF FLANGE
1.713 MAX.
2.150 MAX.
.187
Ø .375
LP3-4
Momentary, 15/32” Threaded Rear Mount
NORMALLY OPEN
.380 REF.
TERMINALS
NORMALLY CLOSED
TERMINALS
.020 (TYP)
.110 (TYP)
1.130 REF.
.34
Ø .570
.25
Ø .375
LED CATHODE (-)
LED ANODE (+)
.469-32 UNS-2A THD. TO
WITHIN .062 OF FLANGE
1.560 MAX.
2.150 MAX.
LP3-6
Momentary, 5/8” Threaded Rear Mount
NORMALLY OPEN
TERMINALS
.380 REF.
NORMALLY CLOSED
TERMINALS
.020 (TYP)
1.033 REF.
.687 REF.
Ø .875
.25
Ø .570 .110 (TYP)
Ø .375
LED CATHODE (-)
LED ANODE (+)
.625-24 UNEF-2A THD. TO
WITHIN .062 OF FLANGE
1.463 MAX.
2.150 MAX.
.375
Ø .500
NOTE:
For indicator light only, see LP5 series.
58
OTTO Full Line Catalog
Specifications Subject To Change Without Notice
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