The Klixon 7BT2 thermostat is
a snap–acting disc type control designed to provide crisp, positive switching action. The
bimetal disc and electrical contacts are enclosed in a stainless steel cup. The 7BT2 is available in a variety of
configurations, making it a versatile candidate for your thermal protection needs.
All 7BT2 thermostats are supplied with single–pole, single–throw switching that can be constructed as either normally open or normally closed.
For more information, see the
page of free drawings available for download.
Ratings for 7BT2 |
Agency |
Max. Voltage |
Max. Current
Non–inductive |
Max. Temp. |
Cycles |
UL |
120 VAC |
10 A |
400°F |
30,000 |
UL |
240 VAC |
10 A |
400°F |
30,000 |
UL |
277 VAC |
7 A |
400°F |
30,000 |
UL / UL–C |
120 VAC |
10 A |
400°F |
100,000 |
UL / UL–C |
240 VAC |
10 A |
400°F |
100,000 |
UL / UL–C |
277 VAC |
7.2 A |
400°F |
100,000 |
KEMA |
240 VAC |
10 A |
420°F |
100,000 |
Performance
Contact Ratings (Resistive) Based on standard differential |
120 VAC |
240 VAC |
10 amps |
10 amps |
Characteristics |
Dielectric Strength |
1500 VAC, rms, 60 cycles for 1 minute, terminal to case |
Ambient Temperature Range |
-40°F to +464°F (-40°C to +240°C) |
Operating Temperature Range |
+30°F to 400°F (-1.1°C to +204.4°C) |
Operating Temperature Dash Number
Dash |
Operating
Temperature |
Differential |
Tolerance |
# |
°F |
°C |
°F |
°C |
±°F |
±°C |
* |
30 |
-1.1 |
20 |
11.1 |
5 |
2.8 |
* |
40 |
4.4 |
20 |
11.1 |
5 |
2.8 |
* |
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 |
Dash |
Operat. Temp. |
Differential |
Tolerance |
# |
°F |
°C |
°F |
°C |
±°F |
±°C |
* |
110 |
43.3 |
20 |
11.1 |
5 |
2.8 |
1 |
120 |
48.9 |
20 |
11.1 |
5 |
2.8 |
2 |
125 |
51.7 |
20 |
11.1 |
5 |
2.8 |
3 |
130 |
54.4 |
20 |
11.1 |
5 |
2.8 |
4 |
135 |
57.2 |
20 |
11.1 |
5 |
2.8 |
5 |
140 |
60.0 |
20 |
11.1 |
5 |
2.8 |
6 |
145 |
62.8 |
20 |
11.1 |
5 |
2.8 |
7 |
150 |
65.6 |
20 |
11.1 |
5 |
2.8 |
Dash |
Operat. Temp. |
Differential |
Tolerance |
# |
°F |
°C |
°F |
°C |
±°F |
±°C |
8 |
155 |
68.3 |
20 |
11.1 |
5 |
2.8 |
9 |
160 |
71.1 |
20 |
11.1 |
5 |
2.8 |
10 |
165 |
73.9 |
20 |
11.1 |
5 |
2.8 |
11 |
170 |
76.7 |
20 |
11.1 |
5 |
2.8 |
12 |
175 |
79.4 |
20 |
11.1 |
5 |
2.8 |
13 |
180 |
82.2 |
20 |
11.1 |
5 |
2.8 |
14 |
185 |
85.0 |
20 |
11.1 |
5 |
2.8 |
15 |
190 |
87.8 |
20 |
11.1 |
5 |
2.8 |
Dash |
Operat. Temp. |
Differential |
Tolerance |
# |
°F |
°C |
°F |
°C |
±°F |
±°C |
16 |
195 |
90.6 |
20 |
11.1 |
5 |
2.8 |
17 |
200 |
93.3 |
20 |
11.1 |
5 |
2.8 |
40 |
315 |
157.2 |
40 |
22.2 |
12 |
6.7 |
18 |
205 |
96.1 |
30 |
16.7 |
8 |
4.4 |
19 |
210 |
98.9 |
30 |
16.7 |
8 |
4.4 |
20 |
215 |
101.7 |
30 |
16.7 |
8 |
4.4 |
21 |
220 |
104.4 |
30 |
16.7 |
8 |
4.4 |
22 |
225 |
107.2 |
30 |
16.7 |
8 |
4.4 |
Dash |
Operat. Temp. |
Differential |
Tolerance |
# |
°F |
°C |
°F |
°C |
±°F |
±°C |
23 |
230 |
110.0 |
30 |
16.7 |
8 |
4.4 |
24 |
235 |
112.8 |
30 |
16.7 |
8 |
4.4 |
25 |
240 |
115.6 |
30 |
16.7 |
8 |
4.4 |
26 |
245 |
118.3 |
30 |
16.7 |
8 |
4.4 |
27 |
250 |
121.1 |
30 |
16.7 |
8 |
4.4 |
28 |
255 |
123.9 |
30 |
16.7 |
8 |
4.4 |
29 |
260 |
126.7 |
30 |
16.7 |
8 |
4.4 |
30 |
265 |
129.4 |
30 |
16.7 |
8 |
4.4 |
Dash |
Operat. Temp. |
Differential |
Tolerance |
# |
°F |
°C |
°F |
°C |
±°F |
±°C |
31 |
270 |
132.2 |
30 |
16.7 |
8 |
4.4 |
32 |
275 |
135.0 |
30 |
16.7 |
8 |
4.4 |
33 |
280 |
137.8 |
30 |
16.7 |
8 |
4.4 |
34 |
285 |
140.6 |
30 |
16.7 |
8 |
4.4 |
35 |
290 |
143.3 |
30 |
16.7 |
8 |
4.4 |
36 |
295 |
146.1 |
30 |
16.7 |
8 |
4.4 |
37 |
300 |
148.9 |
30 |
16.7 |
8 |
4.4 |
38 |
305 |
151.7 |
40 |
22.2 |
12 |
6.7 |
Dash |
Operat. Temp. |
Differential |
Tolerance |
# |
°F |
°C |
°F |
°C |
±°F |
±°C |
39 |
310 |
154.4 |
40 |
22.2 |
12 |
6.7 |
41 |
320 |
160.0 |
40 |
22.2 |
12 |
6.7 |
42 |
325 |
162.8 |
40 |
22.2 |
12 |
6.7 |
43 |
330 |
165.6 |
40 |
22.2 |
12 |
6.7 |
44 |
335 |
168.3 |
40 |
22.2 |
12 |
6.7 |
45 |
340 |
171.1 |
40 |
22.2 |
12 |
6.7 |
46 |
345 |
173.9 |
40 |
22.2 |
12 |
6.7 |
47 |
350 |
176.7 |
40 |
22.2 |
12 |
6.7 |
Dash |
Operat. Temp. |
Differential |
Tolerance |
# |
°F |
°C |
°F |
°C |
±°F |
±°C |
* |
360 |
182.2 |
40 |
22.2 |
12 |
6.7 |
* |
370 |
187.8 |
40 |
22.2 |
12 |
6.7 |
* |
380 |
193.3 |
40 |
22.2 |
12 |
6.7 |
* |
390 |
198.9 |
40 |
22.2 |
12 |
6.7 |
* |
400 |
204.4 |
40 |
22.2 |
12 |
6.7 |
Consult Sensata Technologies if desired operating temperature does not appear on table. |
Configurations
Our most common configurations are depicted below, but many other styles are available. The 7BT2 can be custom packaged to meet your specific design requirements.
Configuration Options - Custom configurations are available |
Terminals |
A = Solder Type, Flat |
B = 3/16 QC, outset at 90° |
C = Weld Type, Flat |
D = Weld Type, outset at 90° |
F = ¼ QC, outset at 90° |
G = ¼ QC, Flat |
Mounting Style |
2 = No Mounting |
3 = Loose Bottom Bracket |
4 = Fixed Top Flange |
6 = 6-32 x .187 stud |
Wire Leads |
Standard wire is 18 gauge stranded, tinned copper wire with black 0.31" PVC
insulation (600V, 105°C). Standard lengths are shown below, but other lengths are available upon request.
1 = 6"
2 = 12"
3 = 18"
4 = 24" |
Below is a sample of possible mounting style configurations.
Any terminal
style may be matched with any mounting style.
