P8
COMPACT
PUSHBUTTONS
COMPACT PUSHBUTTONS
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 force (120g/4.2 oz), low contact resistance
(25mΩ max) and short contact bounce are the result of our
snap-action mechanism. These characteristics guarantee
exceptional current carrying capabilities over the life of the
switch. With the optional low level 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
P8-6
Style
P8-4
Style
P8-7
®
C
US
Standard Characteristics/Ratings:
ELECTRICAL RATINGS:
Load
Resistive
Inductive
Lamp
DWV
Low Level
Electrical Life:
Mechanical Life:
Seal:
Operating Force:
Total Travel:
Overtravel:
Sea Level @
28VDC or 115VAC, 60/400Hz
10A
5A
3A
1050Vrms
10mA @ 30mV
100,000 cycles (25,000 low level)
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
Features:
•
•
•
•
•
•
•
•
•
•
•
Shorter behind panel depth than OTTO’s P1/P3
Patented “rolling sleeve” button seal
Contact area sealed at button & terminals
Positive tactile feedback
Variety of mounting styles
Variety of button lengths & shapes
Engraved buttons & bezels available
Mechanical life 1 million cycles
UL recognized & CSA certified
Sealed to IP64 or IP68S
RoHS/WEEE/Reach compliant
Operating Temp Range:
-55°C to +85°C
MATERIALS:
Case:
Button:
Terminals:
Terminal Hardware:
Mounting Hardware:
Anodized aluminum alloy
Thermoplastic
Brass with silver or brass with gold over silver for low level
Terminal lugs, screws and lockwasher where applicable
Hex nut, lockwasher, panel seal gasket when applicable
150
OTTO Full Line Catalog
Specifications Subject To Change Without Notice
COMPACT PUSHBUTTONS
P8-1, Style A Bezel
Press Fit Bushing
P8-3, Style C Bezel
0.625-24 Bushing
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”
COMPACT
PUSHBUTTONS
P8
MOMENTARY OR PUSH-PULL ACTION, SHORTER BEHIND PANEL, SUBMINIATURE DOUBLE BREAK
Flat Button Shape Shown
Specify Dia.: 0.312” or 0.375”
Height: 0.187” or 0.250”
Flat Button Shape Shown
Specify Dia.: 0.312” or 0.375”
Height: 0.187” or 0.250”
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
.25
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
3&6
0.984
1, 2, 4 & 5
1.097
3&6
1.211
Terminal Styles
1, 2, 4 & 5
3&6
“A” (inches)
0.808
0.922
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
Specify Dia.: 0.312” or 0.375”
Height: 0.187” or 0.250”
Dome
Button Shape
Available as Button Style P only.
Push-Pull
Button Shape
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.
Specifications Subject To Change Without Notice
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
P8 PART NUMBER CODE
X
X
X
Current Rating Level/
Seal Type
1.
Std./Unsealed
➂
2.
Std./Moistureproof
3.
Std./Watertight
4.
Low Level/Moistureproof
5.
Low Level/Watertight
6.
Std./Dusttight
X
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
➀
4.
Solder/Black
5.
Screw/Black
6.
Faston/Black
➀
Circuit
Form
1.
N.O.
2.
N.C.
6.
2 Circuit
Operating
Force/Action
1.
2.5 lbs./Momentary
2.
4.0 lbs./Momentary
3.
Push-Pull
➁
Button Diameter/
Length/Shape
➁
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
PUSHBUTTONS
➀
Faston receptacles: 0.187” on N.O.; 0.110” on N.C. terminals.
➁
Push-pull action available in button style “P” only.
➂
Unsealed units are not recommended for low level current duty.
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151
Programming Basics
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