12AT Series Toggle Actuated Hermetic Switches
Switches
On NASA’s Apollo space program, Sensata 12AT Series Toggle Actuated Hermetic Switches traveled to the moon and back, including moon landings on Apollo 11 and later missions. The 12AT series utilizes gas tight switch elements with a robust design ideal for use on military aircraft, space-craft, space suit EVA, military ground, and other extremely harsh environments like oil and gas. Switch designs are available in single pole and multiple pole configurations with momentary, maintain, or locked toggle actions.
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Contact UsFeatures
- Switch element qualified per MIL-PRF-8805, Enclosure Symbol 5, gas-tight, hermetic seal with dry nitrogen backfill
- Momentary, maintain, or locked toggle actions
- Optimal for both low level circuits and switching up to 4 amps
- Excellent shock and vibration resistance
Applications
- Spacecraft / space capsule control
- Space Suit EVA (Extra Vehicular Activity)
- Lunar Rover control
- Battery circuit control
- Weapons System Control
- Aircraft Cargo or Hoist Control
- Military Ground Vehicle
- Oil and Gas
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Specifications
| Switch Element | QPL per MIL-PRF-8805/68 |
| Seal, Hermetic | Per MIL-PRF-8805, Enclosure Symbol 5 (1x10^-8 cc Helium/second) |
| Shock | 100G, 6 millisecond |
| Vibration | 10-3000 Hz, 30G (no contact chatter > 10 microseconds) |
| Current Rating | 4 amps max. (resistive) at 28 VDC |
| Voltage Drop | 4mV max (0.040 ohms) at 100 mA and 6VDC |
| Temperature | -65 °C to +135 °C |
| Dielectric Strength | 1000 Vrms (terminal to case), 800 Vrms (terminal to terminal) with 0.5 milliamp max. leakage |
| Insulation Resistance | 100 Meg-ohms at 500VDC |