P1 MILITARY PUSHBUTTONS PUSHBUTTONS PER MIL-PRF-8805/3 (MS25089) MOMENTARY ACTION, SEALED, SNAP-ACTION, DOUBLE BREAK The P1 offers a mechanical life that is well beyond the 50,000 cycles required by MIL-PRF-8805. The dual break switching mechanism has an incredibly fast transfer time, reducing arcing and increasing contact life. The inherent wiping action breaks welds and scrubs the contacts clean on every actuation. Style P1-1 Style P1-3 The P1 switch offers vastly improved life under extreme conditions found in most military environments. Moistureproofing is accomplished in two ways. The pushbutton is sealed with a silicone boot operating on our patented "rolling sleeve," providing longer life and smoother operation over a wide temperature range. Epoxy seals protect the contacts and terminals from hostile environments and solder flux. Watertight sealing to Commercial (IP68S) and Military (MIL-PRF8805 Design 3) standards are available. This watertight design is also available in commercial construction as the P3 series (add "W" to your part number). Style P1-8 Style P1-5 Style P1-2 High contact pressure (120g/4.2 oz), low contact resistance (25m max) and short contact bounce (5ms max) result from 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 P1 is well suited to interface directly to computers and other solid state devices. The P1 switch is a quality precision snap-action switch designed for use in panel boards, control grips, computers, instruments, pressure switches and other hand or machine operated applications where sealed pushbutton switches are required. Its precision permits the P1 to be used as a limit switch with unique size, high electrical ratings and a wide choice of mounting styles. Style P1-6 Style P1-7 (R) Standard Characteristics/Ratings: ELECTRICAL RATINGS: Load Sea Level @ 28VDC or 115VAC, 60/400Hz 50,000 feet @ 28VDC or 115VAC, 60/400Hz Resistive 10A N/A Inductive 5A 5A Lamp 3A N/A Features: Motor 3A N/A Center Contact 3A max N/A * * * * DWV 1050Vrms 400Vrms Low Level 10mA @ 30mV max DC or peak AC * * * * * * 68 Button sealed with patented "rolling sleeve" principle Contact area sealed at button & terminals Less than 25m contact resistance Ideal for low level switching as well as up to 10 amp duty Positive tactile feedback Variety of mounting styles Engraved buttons & bezels available UL recognized Watertight to IP68S available RoHS & WEEE compliant OTTO Full Line Catalog Electrical Life: 25,000 cycles Mechanical Life: 50,000 cycles, circuit forms 3, 4, & 5 250,000 cycles, circuit forms 1, 2 & 6 Seal: MIL-PRF-8805 Design 2 or IP68S Operating Temp Range: -55C to +85C Operating Force: 2.5 lbs. or 4.0 lbs. Reset Force: 0.75 lb. or 1.0 lb. Total Travel: 0.085 +/- 0.015 inches Overtravel: 0.012 inches min Movement Differential: 0.015 inches min MATERIALS: Case: Anodized aluminum alloy Button: Thermoplastic Terminals: Brass with silver plate, gold plate for low level Terminal Hardware: Screws, lockwasher and solder lugs for screw terminal option Mounting Hardware: Hex nut and lockwasher, panel seal on watertight switches Specifications Subject To Change Without Notice PUSHBUTTONS PER MIL-PRF-8805/3 (MS25089) P1 MILITARY PUSHBUTTONS MOMENTARY ACTION, LOW LEVEL UP TO 10 AMPS (MIL-A) P1-7 (MIL-G) P1-2 (MIL-B) P1-8 (MIL-H) P1-3 (MIL-C) PUSHBUTTONS P1-1 Unsealed P1-90013 Operating Force: 5.0 lbs. max Circuit: SPDT-DB Case: Black anodized aluminum Button: Black nylon P1-5 (MIL-E) Watertight P1-90024 Dusttight P1-90014 P1-6 (MIL-F) Specifications Subject To Change Without Notice Operating Force: 4.0 +/- 1.0 lb. Circuit: SPST-N.O. Case: Black anodized aluminum Button: Red nylon www.ottoexcellence.com 69 P1 PUSHBUTTONS PER MIL-PRF-8805/3 (MS25089) MILITARY PUSHBUTTONS MOMENTARY ACTION, LOW LEVEL UP TO 10 AMPS P1 PART NUMBER CODE P1 - X X X X X * Case Style Terminal Style Circuit Form Switch Action Button Color 1. Style A 2. Style B 3. Style C 5. Style E 6. Style F 7. Style G 8. Style H 1. 2. 3. 4. 1. N.O. 2. N.C. 3. N.C. 3 Terminal 4. N.O. 3 Terminal 5. 5 Terminal 6. 2 Circuit 1. 2.5 lbs. Momentary 2. 4.0 lbs. Momentary 3. Push-Pull 1. Red 2. Black 3. Orange 4. Yellow 5. Green 6. Blue 7. Purple 8. Gray 9. White Solder/Std. Screw/Std. Solder/Low Level Screw/Low Level * Add "W" for watertight to IP86S. (For watertight seal to MIL-PRF-8805 Design 3, please contact factory.) Circuit styles with 3 and 5 terminals have 50,000 cycle mechanical life per MIL-PRF-8805. Military standard is 4.0 lbs. ORDERING INFORMATION: Select the OTTO P1 series switch to match your application requirements. Combinations of features are almost unlimited. When ordering, specify the Military (MS) Number and/or OTTO Part Number. Example: P1-32629 is MS25089-3CW, "C" style case, 2 circuit contact configuration, 4.0 lbs. operating force, white button. For low level model, specify P1-34629, MS25089-3CWL. A partial cross reference list of Military (MS) Numbers to OTTO Part Numbers may be found in the back section of this catalog. 70 OTTO Full Line Catalog Specifications Subject To Change Without Notice SPECIAL PURPOSE DESIGNS P1 MILITARY PUSHBUTTONS EXAMPLES OF CUSTOMIZED P1 SERIES SEALED PUSHBUTTONS Long Pushbutton Total Travel: 0.085" +/- 0.015" Operating Force: 4.0 +/- 1.0 lb. Reset Force: 1.0 lb. min Circuit: SPDT 2 circuit Mechanical Life: 250,000 cycles Button: Black oxide #303 S.S. Housing: Black anodized aluminum Dusttight per MIL-S-8805, this extra long button is installed in a Type P1 "C" case style. P1-10047 PUSHBUTTONS Special Cap On Press Fit Case Total Travel: 0.085" +/- 0.015" Operating Force: 4.0 lbs. Circuit: SPNO-DB Rating: 10 amps Resistive Mechanical Life: 250,000 cycles Electrical Life: 25,000 cycles P1-30074 Special Push-Pull Switch Large Diameter Button Total Travel: 0.085" +/- 0.015" Operating Force: 0.5 lb. to 2.0 lbs. Circuit: SPNO-DB Mechanical Life: 250,000 cycles Button: Black on white nylon Housing: Black anodized aluminum Case: Style "C" Button diameter is 1.187" and is red anodized aluminum mounted on a Type P1 style "C" body. Button is free to rotate 360. P1-30052 Total Travel: 0.085" +/- 0.015" Operating Force: 2.5, +0.5, -1.0 lb. Circuit: SPDT 2 circuit Rating: 10 amps Resistive Mechanical Life: 250,000 cycles Electrical Life: 25,000 cycles P1-30075 Special Knurled Shroud Total Travel: 0.085" +/- 0.015" Operating Force: 4.0 +/- 1.0 lb. Rest Force: 1.0 lb. min Circuit: SPDT 2 circuit Mechanical Life: 250,000 cycles Button: Red nylon Housing: Black anodized aluminum P1-90108 Vandal Resistant Stainless steel housing and button are watertight sealed. Ideal for unattended machines operated by the public. Operating Force: 2.5, +1.0, -0.5 lb. Circuit: SPNO-DB Mechanical Life: 250,000 cycles Bezel: 1.5" dia. Button: 0.812" dia. P1-90135-2 For smaller 0.969" dia., DPDT-DB design, see P4-10155-2. * Large buttons, up to 0.765" diameter * Symbols and nine colors of buttons * Watertight to IP68S * 10 amp resistive rating NOTE: Refer to Standard Legends Chart in Appendix for available symbols. Specifications Subject To Change Without Notice P1-10142-X www.ottoexcellence.com 71