AT Series Hermetic Position Switches
Switches
KLIXON® AT Series hermetic snap–action position switches are ideal for extremely harsh and demanding environments as found in aircraft, military, aerospace, and aircraft engines applications. KLIXON® precision hermetic position switches have been used for over 55 years in a wide range of applications. Our switches are found on virtually all commercial and military aircraft, as well as various space vehicles and satellites worldwide. KLIXON® AT Series hermetic switches provide indication of position in many different aerospace and defense applications on equipment such as flight control actuators, engine start quadrant, landing gear steering, landing gear locked and down, aircraft door or panel closed, helicopter doors, helicopter rotor brakes, and APU valve indication.
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Contact UsFeatures
- Qualified per MIL-PRF-8805, Enclosure Symbol 5
- Hermetically sealed with dry nitrogen gas backfill
- Proven snap-action switching, reliable performance and long life
- Excellent shock and vibration resistance
- Switching up to 4 amps
- Optimal for low level circuits
- Temperature range between -275°F and 450°F
- Small, lightweight axis–symmetric design for robustness and reliability
- Single and multiple pole designs available
- Various mounting configurations for custom applications
- Sealed and unsealed plunger options
- Wide range of side plate designs for narrow width applications
- PMA Approvals for various commercial aircraft
- Customer approvals for space and military applications
Specifications
| Device Type | Standard | ||
| Maximum Actuating Force (STP) | 20 oz | ||
| Minimum Release Force (STP) | 4 oz | ||
| Maximum Pretravel | 0.009” | ||
| Maximum Movement Differential | 0.003” | ||
| Minimum Overtravel | 0.002” | ||
| Overtravel Stop | No | ||
| Maximum Force on Actuator | 5 lb | ||
| Current Ratings in Amps (28VDC) |
Resistance | 3 | 1 |
| Inductive | 1 | ½ | |
| Lamp | 1 | ½ | |
| Minimum Life @ Rated Load | 25K | 50K | |
| Minimum Mechanical Life Cycles | 100K | ||
| Ambient Temperature Range | -65°F to 275°F (-53.8°C to 135°C) |
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| Dielectric Strength Terminal to Case Terminal to Terminal |
1000 VRMS 800 VRMS |
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| Max Leakage | 1 x 10-8 Std. cc He/Sec @ 1 atmosphere differential | ||
| Shock Resistance | 200G, 6 ms sawtooth | ||
| Vibration Resistance | 65G, 10-2000Hz, .5DA or 65GTMS | ||
| Insulation Resistance @ 500VDC | 100 Megohms | ||
| Voltage Drop @ 1 amp | 0.04 | ||
| SEAL (MIL-S-8805) | Design Enclosure 5 | ||
| Backfill | Dry nitrogen with 10% helium | ||
