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Thermostat
Klixon 4391 Series
 
 
 
 
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Site Updated October 16, 2016

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

Klixon® 4391 Series Thermostats
-65°F to 450°F Hermetically Sealed


Snap–action switching
Normally open or closed
Automatic or manual reset
Hermetically sealed and back–filled with nitrogen
SPST or SPDT
High current capacity
Capacity optional overmold

This Klixon snap–acting disc type control is designed to provide crisp, positive switching action. The 4391 is the most versatile of the Klixon precision thermostats with its available SPST or DPDT switching, automatic or manual reset, and overmold options. For more information, see the page of free drawings available for download.

PERFORMANCE Contact Ratings (resistive, automatic reset)

30 VAC/DC
125 VAC
250 VAC
Life Cycles
Amperes
10
4
2
100,000
11
6
3
50,000
12
8
4
25,000
13
10
5
10,000
14
12
6
5,000
Based on standard differential


Dielectric Strength
1250 VAC, rms, 60 cycles for 1 minute


Vibration Resistance
Standard Construction : 5–500 Hz, 3G
High Vibration Construction : 5–500 Hz. 5G


Hermeticity
1 X 10-5 atm cc/second maximum


Weight
Without overmold : 21 grams (average)
With overmold : 56 grams (average)

TEMPERATURE

Ambient Temperature Range
Non-Overmold: -65°F to 450°F (-53.9°C to +232.2°C)
Silicone Overmold: -60°F to 400°F (-51.1°F to +204.4°C)

Operating Temperature Range
Non-Overmold: 0°F to 450°F (-17.8°C to +232.2°C)
Silicone Overmold: 0°F to 400°F (-17.8°C to +232.2°C)
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Klixon
Miniature Thermostats


Operating Temperature * SPST Standard Vibration Resistance * SPDT Standard Vibration Resistance
Differential Tolerance Differential Tolerance
°F °C °F °C ±°F ±°C °F °C ±°F ±°C
0 -17.8 15 8.3 5 2.8 25 13.9 8 4.4
10 -12.2 15 8.3 5 2.8 25 13.9 8 4.4
20 -6.7 15 8.3 5 2.8 25 13.9 8 4.4
30 -1.1 15 8.3 5 2.8 25 13.9 8 4.4
40 4.4 15 8.3 5 2.8 25 13.9 8 4.4
50 10.0 15 8.3 5 2.8 25 13.9 8 4.4
60 15.6 15 8.3 5 2.8 25 13.9 8 4.4
70 21.1 15 8.3 5 2.8 25 13.9 8 4.4
80 26.7 15 8.3 5 2.8 25 13.9 8 4.4
90 32.2 15 8.3 5 2.8 25 13.9 8 4.4
100 37.8 15 8.3 5 2.8 25 13.9 8 4.4
110 43.3 15 8.3 5 2.8 25 13.9 8 4.4
120 48.9 15 8.3 5 2.8 25 13.9 8 4.4
130 54.4 15 8.3 5 2.8 25 13.9 8 4.4
140 60.0 15 8.3 5 2.8 25 13.9 8 4.4
150 65.6 15 8.3 5 2.8 25 13.9 8 4.4
160 71.1 15 8.3 5 2.8 25 13.9 8 4.4
170 76.7 15 8.3 5 2.8 25 13.9 8 4.4
180 82.2 15 8.3 5 2.8 25 13.9 8 4.4
190 87.8 15 8.3 5 2.8 25 13.9 8 4.4
200 93.3 15 8.3 5 2.8 25 13.9 8 4.4
210 98.9 25 13.9 7 3.9 30 13.9 10 5.6
220 104.4 25 13.9 7 3.9 30 13.9 10 5.6
240 115.6 25 13.9 7 3.9 30 13.9 10 5.6
260 126.7 25 13.9 7 3.9 30 13.9 10 5.6
280 137.8 25 13.9 7 3.9 30 13.9 10 5.6
300 148.9 25 13.9 7 3.9 30 13.9 10 5.6
325 160.0 45 25.0 12 6.7 45 13.9 12 6.7
350 176.7 45 25.0 12 6.7 45 13.9 12 6.7
*375 190.6 60 33.3 15 8.3 60 13.9 15 8.3
*400 204.4 60 33.3 15 8.3 60 13.9 15 8.3
*425 218.3 60 33.3 15 8.3 60 13.9 15 8.3
*450 232.2 60 33.3 15 8.3 60 13.9 15 8.3
* NOTE: Available in automatic reset only
Consult Sensata Technologies if desired operating temperature does not appear on table.


CONFIGURATIONS

Our most common configurations and options are depicted below. Other styles are also available.
Drawing

TYPICAL MOUNTINGS

Drawing
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