Military & Precision Switches

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.

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.


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


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

Mil–Spec Cross Reference Chart of Klixon® Precision Switches

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

Military & Precision Switches

AT Series Switches

KX Series Sine Switch

Amironic Ltd.

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