402339 Details

Part of the OTTO P9 Series, this is a contoured dome style push button switch cover, suitable for use with rugged push button switches. The OTTO Black Flush Domed Rubber Boot is suitable for use with panels, control grips, computers & a full range of instruments. KEY FEATURES • Multi-Use Rubber Switch Cover • Moisture Proof/Dust Tight • Available in 2 Button Heights Able to withstand extreme shock and vibrations, the OTTO P9 Rubber Boot is ideal for demanding applications.


Momentary action switches, suitable for wet & dusty or harsh environments.

The P9 Dome series pushbutton switches feature a contoured dome style pushbutton and share similar size and characteristics to the P7 series.

Major differences are plastic housing construction Raised Dome with the availability of a shorting bar contact arrangement. There Threaded Case 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 P9 Dome series is offered in dust tight and moisture proof sealed construction. One million mechanical operations and an FIUSI‘ Dome with electrical life of 25,000 operations at full rated load of 5 amps Threaded Case resistive or 3 amps inductive.

Watertight sealing is available simply by adding a "W” suffix to the part number to specify lP68S rating.


The P9 Dome series is available in standard and low-force
Double break snap-action and non-snap shorting bar models.
Snap-In Case
High contact pressure and unique contact design  0.110" Quick Connect Terminals
Provides low contact resistance for low level switching
Capability as well as full rated service. Solder, PC Pin, and 0.110"


Electrical Life: 25,000 cycles 5A @ 28VDC resistive snap-action
Mechanical Life: 1,000,000 cycles
Features' Seal: IP64 or |P68$
Operating Temp Range: -40°C to +85°C
2 button heights Operating Force: Standard: 1.7 lbs. +/- 0.5 lb.
Low Force: 12 oz +/- 4 oz
Double break or shorting bar, momentary action Shorting Bar: 18 oz +/-602
All plastic housing & button construction
Threaded body or snap-in panel mounting
Withstands extreme shock & vibration

Case: Thermoplastic
Positive Tactile Feedback Contact Transfer: Thermoplastic
Snap-Action Terminals: Brass with gold over silver
Terminal Styles Mounting Hardware: Hex nut, Lockwasher
Moisture proof & Dust tight to IP64 or Watertight to IP68S
UL recognized 8: (ISA certified - RoHS/WEEE/Reach compliant