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Military & Precision Switches

KLIXON® precision switches

Home Products Electronics Switches Military & Precision Switches
AT Series Switches
KX Series Sine Switch
AT Series Switches
AT Series: The AT basic switch is the standard device in the AT family, capable of switching up to 3 amps at 28 VDC into resistive loads.

3AT Series: Higher ambient temperatures.

4AT Series: This device is designed to operate at temperatures lower than the standard AT switch.

10AT Series: This device is designed to operate at temperatures lower than the standard AT switch. Accordingly, this switch finds much use in space applications. For higher current capability than the standard AT switch.

Precision pressure switch
KX Series Sine Switch
KX series switches are sealed within a one-piece steel case engineered to withstand extremely low or high ambient pressures. True hermetic sealing is achieved with a metal “wave type” diaphragm at the actuating lever. The actuating arm is keyed to hold the arm in alignment and to prevent damage to the diaphragm.
switch-kx
PERFORMANCE & ACTUATION CHARACTERISTICS CHART
AT 3AT 4AT 10AT
Device Type Standard High Temperature Low Temperature High Amperage
Maximum Actuating Force (STP) 20 oz 20 oz 28 oz 30 oz
Minimum Release Force (STP) 4 oz 4 oz 1 oz 1 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 1 3 4
Current Ratings in Amps (28VDC) Inductive 1 ½ ½ 1 1
Current Ratings in Amps (28VDC) Lamp 1 ½ ½ 1 2
Minimum Life @ Rated Load 25K 50K 25K 25K 25K
Minimum Mechanical Life Cycles 100K 100K 50K 50K
Ambient Temperature Range -65°F to 275°F
(-53.8°C to 135°C)
-65°F to 450°F
(-53.8°C to 232.2°C)
-275°F to 275°F
(-170.5°C to 135°C)
-85°F to 275°F
(-65°C to 135°C)
Dielectric Strength Terminal to Case Terminal to Terminal Dielectric Strength Terminal to Case Terminal to Terminal 1000 VRMS
800 VRMS
500 VRMS
500 VRMS
1000 VRMS
800 VRMS
1000 VRMS
800 VRMS
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 0.12 0.04 0.04
SEAL (MIL-S-8805) Design enclosure 5
Backfill Dry nitrogen with 10% helium

Typical Switch Package Configurations for the AT Series

Leaf Actuated

Pushbutton

Plunger

Roller

Side Plate

Leaf Actuated
Pushbutton
Plunger
Roller
Side Plate
PERFORMANCE & ACTUATION CHARACTERISTICS CHART
KX4-1-1
KX4-1-2
KX5-1-1
KX5-1-2
KX5-2-1
KX5-2-2
Device Type Environmental Seal Hermetic Seal Hermetic Seal, High Temperature
Actuating Force (STP) 8 to 24 oz 8 to 24 oz 16 to 48 oz
Min Release Force (STP) 3 oz 3 oz 3 oz
Max Pretravel 0.025” 0.025” 0.035”
Max Movement Differential 0.020” 0.020” 0.024”
Min Overtravel 0.015” 0.015” 0.015”
Positive, Overtravel Stop Yes
Max Force on Actuator 25 lb
Current Ratings in Amps 28VDC & 110VAC 60-400Hz Resistance 10 10 5
Inductive 5 5 3
Lamp 3 3 2
Min Life @ Rated Load 25K
Ambient Temperature Range -65°F to 160°F
(-53.8°C to 71.1°C)
-65°F to 275°F
(-53.8°C to 135°C)
-65°F to 375°F
(-53.8°C to 190.5°C)
Dielectric Strength 1250 VRMS
Shock Resistance 100G w/o damage
Vibration Resistance 20G
Contact Arrangement SPDT
Backfill - Dry nitrogen with 10% helium Dry nitrogen with 10% helium
Seal (MIL-S-8805) Resilent, Class 4 (epoxy seal) Fusion, Class 5 (hermetic seal) Fusion, Class 5 (hermetic seal)
Max Leakage 1 x 10-6 Std. cc He/Sec 1 x 10-8 Std. cc He/Sec 1 x 10-8 Std. cc He/Sec
Klixon switches are qualified to MIL-PRF-8805 and meet the requirements of the indicated part numbers
Expired Mil Number Military Part Number Klixon Part Number Poles Configuration
M8805/68-022 10AT117-01 SPDT Flat Plunger
M8805/68-023 10AT17-01 SPDT Flat Plunger
M8805/68-024 10AT17-02-10 SPDT Flat Plunger
M8805/68-025 10AT17-03-10 SPDT Flat Plunger
M8805/68-026 10AT15-01 SPDT Flat Plunger
M8805/68-027 10AT15-02-10 SPDT Flat Plunger
M8805/68-028 10AT15-03-10 SPDT Flat Plunger
M8805/70-033 10AT372-32-10 2PDT Flat Plunger
M8805/70-034 10AT373-32-10 2PDT Roller Plunger
M8805/70-035 10AT372-33-10 2PDT Flat Plunger
M8805/70-036 10AT373-33-10 2PDT Roller Plunger
M8805/70-037 10AT375-102-10 4PDT Flat Plunger
M8805/70-038 10AT374-102-10 4PDT Roller Plunger
M8805/70-039 10AT375-103-10 4PDT Flat Plunger
M8805/70-040 10AT374-103-10 4PDT Roller Plunger
M8805/72-025 M8805/72-033 10AT363-02-10 SPDT Flat Plunger
M8805/72-026 M8805/72-034 10AT361-02-10 SPDT Flat Plunger
M8805/72-027 M8805/72-035 10AT363-03-10 SPDT Flat Plunger
M8805/72-028 M8805/72-036 10AT361-03-10 SPDT Flat Plunger
M8805/72-029 M8805/72-037 10AT364-02-10 SPDT Spherical Plunger
M8805/72-030 M8805/72-038 10AT362-02-10 SPDT Spherical Plunger
M8805/72-031 M8805/72-039 10AT364-03-10 SPDT Spherical Plunger
M8805/72-032 M8805/72-040 10AT362-03-10 SPDT Spherical Plunger
M8805/73-013 10AT7-02-10 SPDT Flat Plunger
M8805/73-014 10AT7-03-10 SPDT Flat Plunger
M8805/73-015 10AT76-02-10 SPDT Spherical Plunger
M8805/73-016 10AT76-03-10 SPDT Spherical Plunger
M8805/74-035 10AT366-02-10 SPDT Flat Plunger
M8805/74-036 10AT368-02-10 SPDT Roller Plunger
M8805/74-037 10AT366-03-10 SPDT Flat Plunger
M8805/74-038 10AT368-03-10 SPDT Roller Plunger
M8805/74-039 10AT369-02-10 SPDT Flat Plunger
M8805/74-040 10AT371-02-10 SPDT w/ O-Ring Seal, HF
M8805/74-041 10AT369-03-10 SPDT Roller Plunger
M8805/74-042 10AT371-03-10 SPDT w/ O-Ring Seal, HF
M8805/74-043 10AT367-02-10 SPDT Flat Plunger
M8805/74-044 10AT367-03-10 SPDT w/ O-Ring Seal, HF
M8805/74-045 10AT370-02-10 SPDT Roller Plunger
M8805/74-046 10AT370-03-10 SPDT w/ O-Ring Seal, HF
Spherical Plunger
Spherical Plunger
Spherical Plunger
w/ O-Ring Seal, HF
Spherical Plunger
w/ O-Ring Seal, HF

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