P8
COMPACT
PUSHBUTTONS
PUSHBUTTON SWITCHES
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
(25mΩ max) 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.
Style
P8-8
Style
P8-3
Style
P8-1
Style
P8-5
Style
P8-4
Style
P8-6
Style
P8-7
®
Standard Characteristics/Ratings:
ELECTRICAL RATINGS:
Load
Resistive
Inductive
Lamp
Low Level
Electrical Life:
Mechanical Life:
Seal:
Operating Force:
Total Travel:
Overtravel:
Sea Level @
28VDC or 115VAC, 60/400Hz
10A
5A
3A
10mA @ 30mV
100,000 cycles
1,000,000 cycles
IP64 or IP68S
2.5 lbs. +0.5 /-1.0 lb. or 4.0 lbs. +/- 1.0 lb.
0.085 +/- 0.015 inches
0.012 inches min
Operating Temp Range:
-55°C to +85°C
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 25mΩ contact 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
MATERIALS:
Case:
Button:
Terminals:
Terminal Hardware:
Mounting Hardware:
Anodized aluminum alloy
Thermoplastic
Brass with silver plate, gold plate for low level
Terminal lugs, screws and lockwasher where applicable
Hex nut, lockwasher, panel seal gasket when applicable
88
OTTO Full Line Catalog
Specifications Subject To Change Without Notice
PUSHBUTTON SWITCHES
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
COMPACT
PUSHBUTTONS
MOMENTARY OR PUSH-PULL ACTION, SHORTER BEHIND PANEL, SUBMINIATURE DOUBLE BREAK
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"
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"
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"
PUSHBUTTONS
Model
P8-4
Terminal Styles
1, 2, 4 & 5
3&6
"A" (inches)
0.808
0.922
Terminal Styles
1, 2, 4 & 5
3&6
"A" (inches)
0.683
0.797
P8-5
Terminal Styles "A" (inches)
1, 2, 4 & 5
0.870
0.984
3&6
1, 2, 4 & 5
1.097
3&6
1.211
Terminal Styles
1, 2, 4 & 5
3&6
"A" (inches)
0.808
0.922
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"
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.
Terminal Styles
1, 2, 4 & 5
3&6
"A" (inches)
0.683
0.797
Terminal Styles
1, 2, 4 & 5
3&6
"A" (inches)
0.810
0.924
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.
P8 PART NUMBER CODE
P8
Bezel
Style
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
–
X
X
Circuit
Form
1.
N.O.
2.
N.C.
6.
2 Circuit
X
X
X
X
Operating
Force/Action
X
Button
Color
1.
Red
2.
Black
3.
Orange
4.
Yellow
5.
Green
6.
Blue
7.
Purple
8.
Gray
9.
White
Terminal Style/
Case Color
1.
Solder/Silver
2.
Screw/Silver
3.
Faston/Silver
4.
Solder/Black
5.
Screw/Black
6.
Faston/Black
Current Rating Level/
Seal Type
Button Diameter/
Length/Shape
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
1.
2.5 lbs./Momentary
1.
Std./Unsealed
2.
4.0 lbs./Momentary
2.
Std./Moistureproof
3.
Push-Pull
3.
Std./Watertight
4.
Low Level/Moistureproof
5.
Low Level/Watertight
6.
Std./Dusttight
Faston receptacles: 0.187" on N.O.; 0.110" on N.C. terminals.
Push-pull action available in button style "P" only.
Unsealed units are not recommended for low level current duty.
Specifications Subject To Change Without Notice
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89
DIY/Open Source Hardware
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