PUSHBUTTON SWITCHES
COMPACT
PUSHBUTTONS
P8
88 OTTO Full Line Catalog Specifications Subject To Change Without Notice
MOMENTARY OR PUSH-PULL ACTION, SHORTER BEHIND PANEL, SUBMINIATURE DOUBLE BREAK
Makes and breaks every time!
OTTO’s inherent rocking action
breaks, welds and wipes contacts clean.
The P8 series pushbutton switches feature a shortened
back panel depth while offering all the features of the regular
size P1 and P3 series switches. P8 series switches offer vastly
improved electrical and mechanical life under extreme conditions
found in most military and industrial environments.
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 (120g/4.2 oz), low contact resistance
(25mΩmax) and short contact bounce (5ms max) are the result
of our patented snap-action mechanism. These characteristics
guarantee exceptional current carrying capabilities over
the life of the switch. With the optional low level (gold plate)
configuration the P8 is well suited to interface directly to
computers and other solid state devices.
The P8 series is a quality precision snap-action switch designed
for use in panel boards, control sticks, computers, instruments,
pressure switches and other hand or machine operated applications
where rugged pushbutton switches are required. In addition, its
precision permits the OTTO P8 to also be used as a limit switch.
The P8 offers unique size, high electrical ratings and a wide
choice of mounting styles.
Features:
• Shorter behind panel depth than OTTO’s P1/P3
• Patented “rolling sleeve” button seal
• Contact area sealed at button & terminals
• Positive tactile feedback
• Less than 25mΩcontact resistance
• Variety of mounting styles
• Variety of button lengths & shapes
• Engraved buttons & bezels available
• Mechanical life 1 million cycles
• UL recognized
• Sealed to IP64 or IP68S
Standard Characteristics/Ratings:
ELECTRICAL RATINGS:
Load Sea Level @
28VDC or 115VAC, 60/400Hz
Resistive 10A
Inductive 5A
Lamp 3A
Low Level 10mA @ 30mV
Electrical Life: 100,000 cycles
Mechanical Life: 1,000,000 cycles
Seal: IP64 or IP68S
Operating Temp Range: -55°C to +85°C
Operating Force: 2.5 lbs. +0.5 /-1.0 lb. or 4.0 lbs. +/- 1.0 lb.
Total Travel: 0.085 +/- 0.015 inches
Overtravel: 0.012 inches min
MATERIALS:
Case: Anodized aluminum alloy
Button: Thermoplastic
Terminals: Brass with silver plate, gold plate for low level
Terminal Hardware: Terminal lugs, screws and lockwasher where applicable
Mounting Hardware: Hex nut, lockwasher, panel seal gasket when applicable
Style
P8-8
Style
P8-3
Style
P8-1
Style
P8-6 Style
P8-7
Style
P8-4
Style
P8-5
®
PUSHBUTTON SWITCHES COMPACT
PUSHBUTTONS
P8
Specifications Subject To Change Without Notice www.ottoexcellence.com 89
PUSHBUTTONS
MOMENTARY OR PUSH-PULL ACTION, SHORTER BEHIND PANEL, SUBMINIATURE DOUBLE BREAK
P8-1, Style A Bezel
Press Fit Bushing
Flat Button Shape Shown
Specify Dia.: 0.312" or 0.375"
Height: 0.187" or 0.250"
P8-3, Style C Bezel
0.625-24 Bushing
Flat Button Shape Shown
Specify Dia.: 0.312" or 0.375"
Height: 0.187" or 0.250"
P8-6, Style F Bezel
0.625-24 Bushing
Flat Button Shape Shown
Specify Dia.: 0.312" or 0.375"
Height: 0.187" or 0.250"
P8-7, Style G Bezel
0.625-24 Bushing
Flat Button Shape Shown
Specify Dia.: 0.312" or 0.375"
Height: 0.187" or 0.250"
P8-8, Style H Bezel
0.625-24 Bushing
Flat Button Shape Shown
Specify Dia.: 0.312" or 0.375"
Height: 0.187" or 0.250"
Terminal Styles "A" (inches)
1, 2, 4 & 5 0.810
3 & 6 0.924
Terminal Styles "A" (inches)
1, 2, 4 & 5 0.808
3 & 6 0.922
Small Bushing
P8-4: 0.500-32 Bushing
P8-5: 0.469-32 Bushing
Flat Button Shape Shown
Specify Dia.: 0.312" or 0.375"
Height: 0.187" or 0.250"
Dome
Button Shape
Specify Dia.: 0.312" or 0.375"
Height: 0.187" or 0.250"
Push-Pull
Button Shape
Available as Button Style P only.
Model Terminal Styles "A" (inches)
P8-4 1, 2, 4 & 5 0.870
3 & 6 0.984
P8-5 1, 2, 4 & 5 1.097
3 & 6 1.211
Terminal Styles "A" (inches)
1, 2, 4 & 5 0.683
3 & 6 0.797
Terminal Styles "A" (inches)
1, 2, 4 & 5 0.683
3 & 6 0.797
Terminal Styles "A" (inches)
1, 2, 4 & 5 0.808
3 & 6 0.922
ORDERING INFORMATION:
Select the OTTO P8 series switch to
match your application requirements.
Combinations of features are almost
limitless. When ordering, please use the
OTTO Part Number.
Example: P8-316329B specifies a "C" style
bezel, silver color case, solder terminals,
2 circuit contact configuration, standard
contact rating, watertight seal construction,
4.0 lbs. operating force momentary action,
white button 0.375" diameter by 0.250" long,
dome shaped. For low level switching
option, specify P8-316529B.
Bezel
Style
Terminal Style/
Case Color
Circuit
Form
Current Rating Level/
Seal Type
Operating
Force/Action
Button
Color
Button Diameter/
Length/Shape
➁
1. Style A
3. Style C
4. 0.50-32 THD
5. 0.469-32 THD
6. Style F
7. Style G
8. Style H
1. Solder/Silver
2. Screw/Silver
3. Faston/Silver
➀
4. Solder/Black
5. Screw/Black
6. Faston/Black
➀
1. N.O.
2. N.C.
6. 2 Circuit
1. Std./Unsealed
➂
2. Std./Moistureproof
3. Std./Watertight
4. Low Level/Moistureproof
➂
5. Low Level/Watertight
➂
6. Std./Dusttight
1. 2.5 lbs./Momentary
2. 4.0 lbs./Momentary
3. Push-Pull
➁
1. Red
2. Black
3. Orange
4. Yellow
5. Green
6. Blue
7. Purple
8. Gray
9. White
A. 0.375”/0.250”/Flat
B. 0.375”/0.250”/Dome
C. 0.375”/0.187”/Flat
D. 0.375”/0.187”/Dome
E. 0.312”/0.250”/Flat
F. 0.312”/0.250”/Dome
G. 0.312”/0.187”/Flat
H. 0.312”/0.187”/Dome
P. 0.375”/0.250”/Flat
➁
P8 PART NUMBER CODE
P8 – X X X X X X X
➀Faston receptacles: 0.187" on N.O.; 0.110" on N.C. terminals.
➁Push-pull action available in button style "P" only.
➂Unsealed units are not recommended for low level current duty.
