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Klixon 7270 and 7271 Series
 
 
Aircraft Circuit Breakers
 
    ACB Catalog



Klixon
klixon@sensata.com
Phone: 1-508-236-3287
Fax: 1-508-236-1598
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Part numbers
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Site Updated October 16, 2016

* * * Sensata > Products > Klixon Brand > Circuit Breakers > Aircraft >

Klixon® 7270 and 7271 series
Toggle switch or pushbutton, single–phase



Features and Overview Performance Characteristics
Calibration Chart Spec Sheet PDFs
Calibration Chart By Amps Trip Curve
Drawings and Dimensions  
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Features and Overview /\ Top

Trip–free operation
Snap–acting thermal element
Small size
Light weight
MIL-C-5809 qualified
Current rating: 3 to 35 amps
High interrupting capacity
 
Available with neck mounting (7270-1 and 7271-8 devices) or standard cover plate (7270-7 and 7271-3 devices)
Typical use: Aircraft and ground support equipment


Klixon 7270 and 7271 series circuit breakers were designed to utilize less space behind the panel while protecting wire and cable in aircraft and ground support equipment on 120 VAC, 400 Hz or 30 VDC systems.

Inherently resistant to shock and vibration, the Klixon disc element is capable of calibration within close tolerances throughout the service life of the breaker.



Performance Characteristics /\ Top
Vibration
10G minimum, 50–500 Hz (other vibration levels available)
Mechanical Shock
30G
Acceleration
10G
Weight
39 grams maximum (7270-1 and 7271-8)
Interrupt Current
4,000 amps at 30 VDC
3,500 amps at 120 VAC, 400 Hz
Endurance
5,000 cycles: 120 VAC. 400 Hz, inductive
5,000 cycles: 120 VAC 400 Hz, resistive
5,000 cycles: 30 VDC, inductive
2,500 cycles: 30 VDC, resistive
5,000 cycles: Mechanical, no load
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Klixon
7270
7270

7271


Calibration Chart For a Standard Device /\ Top
Temp.
Minimum Ultimate Trip
Maximum Ultimate Trip
Trip Time in seconds
200%
500%
1000%
25°C
105%
145%
15–65
2–10
1.4
-40°C
138%
175%
15–65
2–10
1.4
70°C
80%
125%
15–65
2–10
1.4
The most typical device is 3–35 amps. For others, please contact us.


Calibration Chart By Amps /\ Top
Amps
Calibration at 25°C
200%
400%
600%
3 amps
40–120 seconds
3–26 seconds
1–12 seconds
5 amps
40–100 seconds
3–22 seconds
1–10 seconds
7.5 amps
10–70 seconds
0.75–7.0 seconds
0.25–2.5 seconds
10 amps
10–70 seconds
0.75–7.0 seconds
0.25–2.5 seconds
15 amps
10–70 seconds
0.75–7.0 seconds
0.25–2.5 seconds
20 amps
10–70 seconds
0.75–7.0 seconds
0.25–2.5 seconds
25 amps
10–70 seconds
0.75–7.0 seconds
0.25–2.5 seconds
30 amps
10–70 seconds
0.75–7.0 seconds
0.25–2.5 seconds
35 amps
10–70 seconds
0.75–7.0 seconds
0.25–2.5 seconds


Trip Curve /\ Top

Approximate Time-Current Curves


Drawings and Dimensions For Reference Only /\ Top
7270X
Device Type
Envelope Drawing
7270d1
- - -
7271d3
- - -
7270d8
- - -
7270-1 Diagram

7270-8 Diagram


Diagram


Spec Sheets For Our Most Popular Devices /\ Top
Specification sheets contain detailed drawings, amp ratings, characteristics, and more...
7270X
Device Type
Spec Sheet
7270-1
- - -
7270-7
- - -
7271-8
- - -
For others, please contact us.
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