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Klixon Probe Packages |
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Related |
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ORDERING
Here’s a breakdown of our part numbering system for probe packages:
Field 1 |
21542
(or 21544, 21548, 21549)
Basic package describes general physical appearance and basic thermostat incorporated into device |
Field 2 |
xx
Probe length times 2 (probe length is the length in inches from bottom of the hex to bottom of the device) |
Field 3 |
xxx
Operating characteristics, assigned consecutively (Sensata will assign this number at the time your order is taken) |
Field 4 |
xx
For wire leads, this is the length of wire in 6 inch increments (for 6" it would be 1, for 12" it would be 2, for 18" it would be 3, etc.). For connectors, contact Sensata Technologies for this code. |
So, a ½" pipe thread/connector (see "Standard Part Numbers and Configurations" at right) with probe length of 3" and with an 18" wire lead would be numbered: 21549-06-xxx-03.
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Sensata > Products > Klixon Brand > Thermostats > Precision Thermostats >
Klixon® Thermostat Probe Packages: Immersion Type
Extreme Temperature Protection Probe–Type Thermal Switches
These Klixon ® snap–acting thermostat
probes are designed to provide reliable, consistent performance over a long cycle life in
the harshest of environments. These probes provide excellent shock and vibration resistance
and operate as low as -65°F and as high as 550°F and incorporate the reliable Klixon M1 thermostat.
For more information, see the page of free drawings available or download the data sheet (file type: PDF).
Qualifications
Performance
The standard M1 utilizes silver contacts. Gold plated contacts can be furnished to
assure reliable circuit switching under low wattage conditions. (See second table below.)
Ratings for UL and UL–Canadian for 28303 Series Package Devices |
|
Max. Voltage |
Max. Current Non–inductive |
Max. Temp. |
Cycles |
Notes |
UL |
120 VAC |
2.5 A |
450°F |
100,000 |
Break but not make, ungrounded cup |
UL |
110–300 VAC |
720 VA |
392°F |
10,000 |
Make and break, ungrounded cup |
UL |
300 VAC |
360 VA |
392°F |
10,000 |
Make and break, grounded or ungrounded cup |
UL |
24–240 VAC |
120 VA |
393°F |
10,000 |
Make and break, grounded or ungrounded cup |
UL–C |
120 VAC |
2.5 A |
450°F |
100,000 |
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Contact Ratings (Resistive) Based on standard differential |
30 VAC/DC |
125 VAC |
250 VAC |
Life
Cycles |
5.0 Amperes |
2.5 Amperes |
1.0 Amperes |
100,000 |
5.5 Amperes |
3.0 Amperes |
1.5 Amperes |
50,000 |
6.0 Amperes |
4.0 Amperes |
2.0 Amperes |
25,000 |
6.5 Amperes |
5.0 Amperes |
2.5 Amperes |
10,000 |
7.0 Amperes |
6.0 Amperes |
3.0 Amperes |
5,000 |
Gold Contact Ratings (Resistive) Gold-plated contacts are not suitable for higher loads. |
30 VAC/DC |
500 mA and below |
115 VAC |
200 mA and below |
230 VAC |
100 mA and below |
Characteristics |
Contact Resistance |
0.100 ohms per MIL-STD-202, Method 307 |
Dielectric Strength |
1250 VAC, rms, 60 cycles for 1 minute, terminal to case 1000 VAC, 60 cycles for 1 minute, terminal to terminal with contacts open per MIL-STD-202, Method 301 |
Salt Spray Resistance |
Per MIL-STD-202, Method 101, Condition B, 5% Solution |
Ambient Temperature Range |
-80°F to 550°F, (-62.2°C to 287.8°C)
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) |
Operating Temperature |
Differential |
Tolerance * |
°F |
°C |
°F |
°C |
±°F |
±°C |
-65 to -1 |
-53.9 to -18.4 |
30 |
16.7 |
12 |
6.7 |
0 to 200 |
-17.8 to 93.3 |
20 |
11.1 |
7 |
3.9 |
201 to 300 |
93.9 to 148.9 |
30 |
16.7 |
10 |
5.6 |
301 to 450 |
149.5 to 223.2 |
40 |
22.2 |
14 |
7.8 |
451 to 550 |
223.8 to 287.8 |
70 |
38.9 |
30 |
16.7 |
* Tolerances based on precision factory calibration and test equipment. Customers checking tolerances should allow for differences in test equipment of ±1°F. Temperature settings outside the ranges indicated or to closer tolerances will be considered on special request.
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Configurations
Standard M1 probe packages are comprised of the following physical features, but many other variants are available. The standard material is stainless steel, but nickel plated brass versions are available.
PLEASE NOTE: The orientation of the connector with respect to the package body is not controlled.
Configuration Options - Custom configurations are available |
Probe Body Thread Sizes |
Standard lengths are available in ½" increments from 1.5" to 6". |
Termination |
Standard connector is a Sealtron B8002G-10SL-4P-F (or equivalent) |
Standard wire leads are AWG #18 stranded wire with white or black Teflon* insulation (per MIL-W-22759) (Teflon is a trademark of E. I. Dupont de Namers and Co.) |
Other |
Other styles are available, as well as custom designs |
Standard Part Numbers and Configurations - Many other styles are available, including SPDT. Also, see free drawings available for download. |
21542 |
¾" - 16 thread/connector |
21543 |
½" pipe thread/leads |
21548 |
¾" - 16 thread/leads |
21549 |
½" pipe thread/connector |
For more information, see the page of free drawings available.
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