P9
DOME
PUSHBUTTONS
SEALED DOME PUSHBUTTON SWITCHES
ATTRACTIVE AND RUGGED FOR WET & DUSTY ENVIRONMENTS
The OTTO P9 series pushbutton switches feature a contoured Dome
style pushbutton and share similar size and characteristics to the
OTTO P7 series. Major differences are plastic housing construction
and the availability of a shorting bar contact arrangement. There are
two button versions: low button profile and high button profile. The
P9 comes with a threaded case for hex nut mounting or with a snap-
in case. The switch series features short behind-panel depth. They
also offer excellent mechanical and electrical performance while
operating under severe conditions found in demanding applications.
The OTTO P9 Dome series is offered in dusttight and moistureproof
sealed construction. Expect a minimum of 25,000 operations at full
rated load of 5 amperes resistive or 3 amperes inductive; up to a
million operations in low signal switching.
Watertight sealing (IP68) submersible to 1 meter water pressure is
available. Add “W” suffix to the part number to specify IP68 rating.
The OTTO P9 Dome series is available in standard and low-force
double-break snap-action and non-snap shorting bar models. All are
momentary action. Special contact variations are available. High
contact pressure and unique contact design provide low contact
resistance for low level switching capability as well as full rated
service. Solder, PC Pin, and .110” Quick Connect termination options
are available.
Positive tactile feedback signaling the operator when the switch is
operated is available in snap-action models but not shorting bar models.
The OTTO P9 Dome series is a quality precision switch designed for
use in panels, control grips, computers, instruments, heavy equipment
and other demanding applications where attractive, rugged
pushbutton switches are required.
Snap-in case with
.110” Quick Connect Terminals
Standard Characteristics/Ratings:
OPERATIONAL:
Mechanical Life:
Seal:
Operating Force:
Total Travel:
1,000,000 cycles, minimum
Moistureproof and dusttight to IP64 & MIL-PRF-8805 Design 2
Watertight to IP68
Standard: 1.7±.5 lbs.
Low Force: 12 oz., ±4 oz.
.080 max.
Temperature Range:
-55°C to +85°C
Case/Bezel:
Button:
Thermoplastic
Thermoplastic. Standard Case/Bezel is Black.
Quality Features:
• Attractive Dome style button
• Two button heights
• Double-break or Shorting bar, momentary action
• All plastic housing and button construction
• Threaded body or snap-in panel mounting
• Withstands extreme shock & vibration
• Positive tactile feedback contact transfer on
snap-action models
• Solder, P Pin, and .110” Quick Connect terminal styles
.C.
Mounting Hardware:
Hexnut & Lockwasher
Torque Hexnut to 10 in./oz. max.
Contacts:
Gold Plated Silver Alloy
ELECTRICAL:
Snap-Action: at 28 VDC or 115 VAC, 60/400 Hz.
Shorting Bar: at 5VDC
Current Rating
Load
Resistive
Resistive
Inductive
Snap-Action
1A
5A
3A
Shorting Bar
10mA
N/A
N/A
Operational Life
(Min. Cycles)
Snap-Action
1,000,000
25,000
25,000
Shorting Bar
1,000,000
N/A
N/A
Dielectric Withstand:
1050 Vrms
60
OTTO CONTROLS • 2005 Full Line Catalog
Specifications Subject To Change Without Notice
P9
SEALED DOME PUSHBUTTON SWITCHES
CHOICE OF SNAP-ACTION & SHORTING BAR ACTION
Raised Dome Button Style
DOME
PUSHBUTTONS
15/32-32 UNRS-2A THD
to within .062 of shoulder
.110” Quick Connect Detail
Flush Dome Button Style
PUSHBUTTONS
15/32-32 UNRS-2A THD
to within .062 of shoulder
(As viewed from switch bottom.)
Snap-in Case
Recommended Panel Openings
*Panel Thickness
.024*
.031
.118*
.125
Recommended Ø
Ø .505
Ø .505
Ø .505
Ø .505
DIM. Across D-Flat
.460
.460
.460
.460
* Must use panel gasket 401669 supplied with the switch.
•
•
•
•
Snap-in Case allows front panel mounting into .024 or .118 thick panels using
panel gasket 401669 or into .031 and .125 thick panels
.110" Quick Connect terminals allow reliable, solderless wire connections
Flush Neoprene Boot P/N 402339
Raised Neoprene Boot P/N 402246
Snap-in Case Detail
Ordering Information
Select the OTTO P9 series features that
match your specific application. Standard
and special features are shown at
right. Specify your choice by building
the OTTO Part Numbering code.
Example: P9-211121 specifies raised
dome style button, threaded case,
solder terminals, N.O. circuit form,
standard snap-action, black case/bezel,
red button.
Button and Case
Style
1. Flush Dome with threaded case
2. Raised Dome with threaded case
3. Flush Dome with snap-in case
4. Raised Dome with snap-in case
P9- X
Terminal
Style
1. Solder
2. PC pin
3. .110"
Quick Connect
X
Circuit
Form
X
X
X
Switch
Action
X
*
Case/Bezel
Color
Button
Color
1. Red
2. Black
3. Orange
4. Yellow
5. Green
6. Blue
7. Purple
8. Gray
9. White
1. N.O.
2. N.C.
➀
3. 2-Circuit
➀
* Add “W” suffix for watertight.
1. Standard Snap-Action 2. Black
2. Low force Snap-Action
3. Non-Snap Shorting Bar 1. Red
3. Orange
4. Yellow
➀
Not available in Shorting Bar version.
5. Green
6. Blue
7. Purple
8. Gray
9. White
Specifications Subject To Change Without Notice
OTTO CONTROLS • www.ottoeng.com
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