The World Depends on Sensors and Controls
*
Thermostat
Klixon M1 and 11041 Series
 
 
  Datasheet (PDF)
 
 
Related
 
 
 
 
 

Have a question? Email Klixon now. Click here.


Site Updated October 16, 2016

* * * Sensata > Products > Klixon Brand > Thermostats > Precision Thermostats >

Klixon® M1 and 11041 Series Thermostats
-65°F to 550°F, High Reliability, Hermetically Sealed ½"


Hermetically sealed
Vacuum baked and back-filled with dry nitrogen
Single pole, single throw
Normally open or normally closed
Preset, non-adjustable calibration
High vibration and shock resistance
Qualified to MIL-PRF-24236 /1
Qualified to NASA S-311-641/05

The Klixon M1 precision thermostat is constructed with a snap acting bimetal disc that serves as the actuating element. As the temperature reaches a predetermined calibration point the disc snaps to reverse its curvature, producing the crisp, positive switching action inherent to Klixon thermostats. This feature assures reliable consistent operating temperature over a longer cycle life.

The M1/11041 series of thermostats are engineered for exceptional vibration and shock resistance to provide reliable switching in the most demanding applications. Prior to the final weld, finished assemblies are vacuum baked and back–filled with dry nitrogen. The inert, dry atmosphere eliminates moisture and other volatiles to prevent condensation at low temperatures or possible contact contamination at high temperatures. This back–fill also improves the dielectric characteristics of the device and prevents oxidation of the contacts. The M1 thermostat is the ideal choice where quality and reliability are paramount.

All M1 thermostats are supplied with single pole, single throw switching that can be constructed as either normally closed or normally open. The opening and closing temperatures are pre–set and non-adjustable.

For more information, see the page of free drawings available for download.

PERFORMANCE Contact Ratings (resistive)

30 VAC/DC
125 VAC
250 VAC
Life
Cycles
Amperes
5.0
2.0
1.0
100,000
5.5
3.0
1.5
50,000
6.0
4.0
2.0
25,000
6.5
5.0
2.5
10,000
7.0
6.0
3.0
5,000

Based on standard differential

The standard M1 utilizes silver contacts. Gold plated contacts can be furnished to assure reliable circuit switching under low wattage conditions per the following table.

30 VAC/DC
500 mA and below
115 VAC
200 mA and below
230 VAC
100 mA and below


Note: Other contact material may be appropriate for certain applications. Contact Sensata for additional application support.

Contact Resistance
0.050 ohms maximum per MIL-STD-202, Method 307

Dielectric Strength
1250 VAC, rms, 60 cycles for 1 minute, terminal to case per MIL-STD-202, Method 301

Vibration Resistance
5-2000 Hz, 20G, per MIL-STD-202, Method 204, Condition D (monitored)
5-1000 Hz, 100G, per MIL-STD-202, Method 204, Condition D (unmonitored)
1000-2000 Hz, 50G, per MIL-STD-202, Method 204, Condition D (unmonitored)

Shock Resistance
100G, 6 milliseconds, per MIL-STD-202, Method 213

Hermeticity
1 X 10-8 atm cc/second maximum, per MIL-STD-202, Method 112, Condition C

Salt Spray Resistance
Per MIL-STD-202, Method 101, Condition B, 5% solution

Moisture Resistance
Per MIL-STD-202, Method 106

Weight (average)
Basic Unit.… 4.8 grams
w/ bracket… 5.9 grams

Ambient Temperature Range
-80°F to +550°F, (-62.2°C to +287.8°C)
w/ bracket… 5.9 grams

Maximum ambient exposure while in the closed position is 200°F above contact closing temperature.

Operating Temperature Range
-65°F to 550°F, (-53.9°C to +287.8°C)

Finish
The standard plating is copper–nickel, but other finishes are available.

Wire Leads
Standard 18 gauge, stranded wire leads are available in white or black Teflon* insulation, in accordance with MIL-W-22759/11. Other wires are available upon request.

*Trademark of E. I. Dupont de Namers and Co.

Operating
Temperature
Differential
Tolerance
°F
°C
°F
°C
±°F
±°C
-65
-53.9
30
16.7
10
5.6
-40
-40.0
30
16.7
10
5.6
-15
-26.1
30
16.7
10
5.6
0
-17.8
20
11.1
5
2.8
10
-12.2
20
11.1
5
2.8
20
-6.7
20
11.1
5
2.8
30
-1.1
20
11.1
5
2.8
40
4.4
20
11.1
5
2.8
Operat. Temp.
Differential
Tolerance
°F
°C
°F
°C
±°F
±°C
50
10.0
20
11.1
5
2.8
60
15.6
20
11.1
5
2.8
70
21.1
20
11.1
5
2.8
80
26.7
20
11.1
5
2.8
90
32.2
20
11.1
5
2.8
100
37.8
20
11.1
5
2.8
110
43.3
20
11.1
5
2.8
120
48.9
20
11.1
5
2.8
Operat. Temp.
Differential
Tolerance
°F
°C
°F
°C
±°F
±°C
130
54.4
20
11.1
5
2.8
140
60.0
20
11.1
5
2.8
150
65.6
20
11.1
5
2.8
160
71.1
20
11.1
5
2.8
170
76.7
20
11.1
5
2.8
180
82.2
20
11.1
5
2.8
190
87.8
20
11.1
5
2.8
200
93.3
20
11.1
5
2.8
Operat. Temp.
Differential
Tolerance
°F
°C
°F
°C
±°F
±°C
210
98.9
30
16.7
8
4.4
220
104.4
30
16.7
8
4.4
230
110.0
30
16.7
8
4.4
240
115.6
30
16.7
8
4.4
250
121.1
30
16.7
8
4.4
260
126.7
30
16.7
8
4.4
270
132.2
30
16.7
8
4.4
280
137.8
30
16.7
8
4.4
Operat. Temp.
Differential
Tolerance
°F
°C
°F
°C
±°F
±°C
290
143.3
30
16.7
8
4.4
300
148.9
30
16.7
8
4.4
310
154.4
40
22.2
12
6.7
320
160.0
40
22.2
12
6.7
330
165.6
40
22.2
12
6.7
340
171.1
40
22.2
12
6.7
350
176.7
40
22.2
12
6.7
375
190.6
40
22.2
12
6.7
Operat. Temp.
Differential
Tolerance
°F
°C
°F
°C
±°F
±°C
400
204.4
40
22.2
12
6.7
425
218.3
40
22.2
12
6.7
475
246.1
70
38.9
25
13.9
450
232.2
40
22.2
12
6.7
525
273.9
70
38.9
25
13.9
500
260.0
70
38.9
25
13.9
550
287.8
70
38.9
25
13.9
Consult Sensata Technologies if desired operating temperature does not appear on table.


CONFIGURATIONS

Standard configurations are available as the M1 series and are shown below. Many other configurations are available as the 11041 series. The M1/11041 can also be custom packaged to meet your specific design requirements.
* * *
Klixon
Miniature Thermostats

Qualifications

Military Specifications:
  • MIL-PRF-24236/1

  • NASA Specifications:
  • S-311-641/05


  • Drawing

    A standard M1 part number can be constructed using the part numbering code below:

    Drawing
    The World Depends on Sensors and Controls