ENVIRONMENT-FREE SEALED SEALED LIMIT
SWITCHES
P6
Specifications Subject To Change Without Notice www.ottoexcellence.com 45
LIMIT SWITCHES
SEALED AGAINST IMMERSION & CORROSIVE ATMOSPHERES
P6 series switches are sealed against immersion and corrosive
atmospheres. These switches are designed for rugged duty both
mechanically and electrically. A one-piece stainless steel housing,
sealed at the plunger with an O-ring seal and at the base with a
glass-to-metal header provides true environment-free sealing
to comply with MIL-PRF-8805/39, MIL-PRF-8805/40, MIL-PRF-
8805/43 and MIL-PRF-8805/100. Most case parts are grounded for
EMI reduction.
The P6 series is available with roller plunger styles for cam or
slide actuation and pin plunger for in-line actuation. Contact
factory for additional designs.
P6 series features the OTTO B2, B3 or B5 series snap-action
basic switch. High contact pressure and unique contact design
provides low contact resistance for low level switching as well
as full rated service.
Features:
• Complies with MIL-PRF-8805 sealing
• One-piece housing
• Sealed at plunger with O-rings
• Sealed at base with a glass seal
• EMI reduction construction
• Choice of pin or roller plunger
• Choice of axial or radial leads
Cross section example of OTTO P6-24XXX series.
SEALED LIMIT SWITCHES
LIMIT
SWITCHES
P6
46 OTTO Full Line Catalog Specifications Subject To Change Without Notice
FEATURING OTTO B2 & B3 SERIES BASIC SWITCHES
Style A
Pin Plunger
Radial Leads
Style C
Pin Plunger
Axial Leads
Style B
Roller Plunger
Radial Leads
Style D
Roller Plunger
Axial Leads
SEALED LIMIT SWITCHES LIMIT
SWITCHES
P6
Specifications Subject To Change Without Notice www.ottoexcellence.com 47
LIMIT SWITCHES
FEATURING OTTO B2 & B3 SERIES BASIC SWITCHES
1
4
2
3
5
6
Electrical Life: 25,000 cycles
Low Level Life: 25,000 cycles
Contact Resistance: Per MIL-PRF-8805
Operating Force: 6.0 lbs. to 12.0 lbs. standard.
Other forces available.
Overtravel Force: 30.0 lbs. max
Release Force: 4.0 lbs. min
Pretravel:
MIL-S-8805/39, /40, /43: 0.040 inches
MIL-S-8805/100: 0.070 inches
MIL-S-8805/104: 0.050 inches
Movement Differential:
MIL-S-8805/39, /40, /43: 0.020 inches
MIL-S-8805/100: 0.035 inches
MIL-S-8805/104: 0.030 inches
Overtravel:
MIL-S-8805/39, /40, /100: 0.250 inches
MIL-S-8805/43, /104: 0.125 inches
Wire Type:
Per MIL-W-22759/7
Marked per MIL-W-5088.
Standard length: 6 feet. Other lengths available.
Operating Temp Range: -55°C to 85°C
Mounting/Termination:
Bushing mounting with positive, non-turn features.
Wire leads potted at terminal base for strain relief
and added insulation. Each wire is marked with
circuit identification.
For specific details not shown above, please consult
the appropriate military specification sheet or OTTO’s
product drawing.
2PDT Schematic
1
2
3
4
5
7
8
6
9
12
10
11
4PDT Schematic
Circuitry Plunger/Lead Dim. A Dim. B Dim. C Dim. D Dim. E Electrical Military Catalog
Exit Style Free Position Bushing Length Thread Body Dia. Body Length Rating Number Number
(inches +/- 0.030) (inches +/- 0.030) (inches) (max inches) (max inches) Table
MIL-S-8805/39
2PDT A-Pin/Radial 1.375 1.000 0.625-24 0.720 0.980 1 MS21321-1 P6-24000
4PDT A-Pin/Radial 1.375 1.000 0.625-24 1.031 1.200 1 MS21321-2 P6-24001
MIL-S-8805/40
2PDT A-Pin/Radial 1.375 1.000 0.625-24 1.015 0.980 3 MS24331-1 P6-24002
MIL-S-8805/43
2PDT A-Pin/Radial 0.875 0.625 0.469-32 0.720 1.000 1 MS27240-1 P6-24003
4PDT A-Pin/Radial 0.875 0.625 0.469-32 1.031 1.200 1 MS27240-2 P6-24004
2PDT B-Roller/Radial ➀1.295 N/A 0.469-32 0.720 1.000 1 MS27240-3 P6-14000
4PDT B-Roller/Radial ➀1.295 N/A 0.469-32 1.031 1.200 1 MS27240-4 P6-14001
2PDT A-Pin/Radial 0.875 0.625 0.469-32 0.720 1.000 4 MS27240-5 P6-24005
4PDT A-Pin/Radial 0.875 0.625 0.469-32 1.031 1.200 4 MS27240-6 P6-24006
2PDT B-Roller/Radial ➀1.295 N/A 0.469-32 0.720 1.000 4 MS27240-7 P6-14002
4PDT B-Roller/Radial ➀1.295 N/A 0.469-32 1.031 1.200 4 MS27240-8 P6-14003
MIL-S-8805/100
4PDT A-Pin/Radial 1.375 1.000 0.625-24 1.030 1.100 2 MIL-PRF-8805/100-007 P6-24043
4PDT C-Pin/Radial 1.375 1.000 0.625-24 1.030 1.200 2 MIL-PRF-8805/100-008 P6-24044
4PDT B-Roller/Axial 1.781 0.794 0.625-24 0.925 1.100 2 MIL-PRF-8805/100-009 P6-14035
4PDT D-Roller/Axial 1.781 0.794 0.625-24 1.030 1.200 2 MIL-PRF-8805/100-010 P6-14036
4PDT A-Pin/Radial 1.375 1.000 0.625-24 1.030 1.100 2 MIL-PRF-8805/100-015 P6-24007
4PDT C-Pin/Axial 1.375 1.000 0.625-24 1.030 1.200 2 MIL-PRF-8805/100-016 P6-24008
4PDT B-Roller/Radial ➁1.781 0.794 0.625-24 1.030 1.100 2 MIL-PRF-8805/100-017 P6-14005
4PDT D-Roller/Axial ➁1.781 0.794 0.625-24 1.030 1.200 2 MIL-PRF-8805/100-018 P6-14006
MIL-S-8805/104
4PDT A-Pin/Radial 1.375 1.000 0.469-32 0.850 1.100 2 MIL-PRF-8805/104-001 P6-20001
4PDT B-Roller/Radial ➀1.719 0.895 0.469-32 0.850 1.100 2 MIL-PRF-8805/104-002 P6-10002
4PDT C-Pin/Axial 1.375 1.000 0.469-32 0.850 1.100 2 MIL-PRF-8805/104-003 P6-20002
4PDT D-Roller/Axial ➀1.719 0.895 0.469-32 0.850 1.200 2 MIL-PRF-8805/104-004 P6-10003
➀Roller diameter is 0.375 inches. ➁Roller diameter is 0.500 inches. NOTE: SEE MILITARY QPL CROSS REFERENCE LISTING IN APPENDIX.
SPECIFICATIONS: Standard Models
ELECTRICAL RATINGS:
Load Sea Level @ 28VDC 50,000 feet @ 28VDC
RATING TABLE 1
Resistive 7A 7A
Inductive 4A 2.5A
Motor 4A 4A
DWV 1000Vrms 400Vrms
RATING TABLE 2
Resistive 7A 7A
Inductive 2A 2A
Motor 4A 4A
Lamp 2A 1A
DWV 1250Vrms 600Vrms
RATING TABLE 3
Resistive 4A 4A
Inductive 2A 2A
Motor 4A 4A
DWV 1000Vrms 400Vrms
RATING TABLE 4
Load Type Power Circuit Elex Logic Low Level Power Circuit Elex Logic
Resistive 1A 0.01A 0.01A 1A 0.01A
Inductive 0.5A N/A N/A 0.5A N/A
DWV 1000Vrms 400Vrms
