
ILLUMINATED & SEALED PUSHBUTTONS ILLUMINATED
PUSHBUTTONS
LP3
Specifications Subject To Change Without Notice www.ottoexcellence.com 90
PUSHBUTTONS
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.
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
Raised Dome Front Mount
Standard Characteristics/Ratings:
ELECTRICAL RATINGS:
Load Sea Level @ 28VDC or 115VAC, 60/400Hz
Resistive 5A
Inductive 3A
Lamp 1A
Motor 3A
DWV 1050Vrms through switch contacts only
Low Level 10mA @ 30mV
Electrical Life: 25,000 cycles
LIGHTING:
Light Source Voltage (DC) Actual Voltage Nominal (DC) Voltage Max (DC)
2 2 2.6
6 7 8
12 13.5 14.5
24 28 28.6
Mechanical Life: 250,000 cycles @ +85°C
25,000 cycles @ -40°C
Seal: IP64 or IP68S
Operating Temp Range: -40°C to +85°C
Operating Force: 2.5 +/- .5 lbs. or 5.0 +/- 1.0 lb.
Total Travel: 0.080 inches max
Overtravel: 0.010 inches min
MATERIALS:
Case: Anodized aluminum alloy
Button: Thermoplastic
Terminals: Standard and low level options available
Mounting Hardware: Hex nut, lockwasher and panel gasket when applicable
Case Style Circuit Rating Light Source Type*
w/ Rev. Pol Protection
Seal Level Operating Force Case Color Button Color Legend Style
E. Exposed Dome
F. Flush Dome
R. Raised Dome
1. Press Fit Mount
3. 5/8” Thread
Front Mount
4. 15/32” Thread
Rear Mount
6. 5/8” Thread
Rear Mount
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
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
2. 2.5 ± .5 lbs.
5. 5.0 ± 1 lbs.
1. Silver
2. Black
A. Amber, Translucent
(use Amber LED)
R. Red, Translucent
(use Red LED)
W. White, Translucent
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.
LP3 PART NUMBER CODE
LP3 – X X X X X X X – XX
* For super bright LEDs, contact factory.
STOP HERE for
illuminated switches
without legends.
MOMENTARY ACTION COMMERCIAL GRADE LED ILLUMINATED & SEALED