*
*
Klixon 7274 Series
 
 
Aircraft Circuit Breakers
 
    ACB Catalog



Klixon
klixon@sensata.com
Phone: 1-508-236-3287
Fax: 1-508-236-1598
more »
Part numbers
Don’t risk ordering the wrong part. Contact us or a distributor.



About these pages
Sensata Technologies is in the process of updating our web pages. Please bear with us during this process. If you have questions or comments, we’d like to hear from you. Please see contact us.



Voltage Drop /\ Top
Amp Rating
Max. Voltage Drop*
½
2.00
¾
1.45
1
1.10
2
0.70
0.70
3
0.55
4
0.45
5
0.35
0.30
10
0.28
15
0.25
20
0.25
* Maximum voltage drop at nominal rated current.

Site Updated October 16, 2016

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

Klixon® 7274 series
½ to 20 amp, single–phase, non–compensated, high performance



Features and Overview Performance Characteristics
Voltage Drop Spec Sheet PDFs
Calibration Chart Trip Curve
Drawings and Dimensions  
Ask a question » Contacts and distributors »




Features and Overview /\ Top

Uses minimum space
Light weight
Trip–free
MIL-C-5809 qualified
Current rating: ½ to 20 amp
Low amp
High vibration resistance
 
Options: Long push button, dust boot (part #14500-1 fits 15/32 bushing, part #14500-5 fits 7/16 bushing), auxiliary switch, waterproof panel seal
Typical use: Military airborne vehicle and equipment protection
* * *
Klixon
7274     7274
7274
Klixon 7274 series are small, lightweight, low amperage devices that are specifically designed to protect aircraft/aerospace cable and components in airborne vehicles and equipment.

The commercial grade version of this circuit breaker is the Klixon 7277 series. The 7277 and 7274-2 series circuit breakers are physically and electrically identical, with the exception that the 7277 has wider calibration limits. Trip–Free
The 7274 features a trip–free, indicating reset button and is available in standard ratings from ½ to 20 amps.

Wiping Action
A "wiping action" contact design assures low voltage drop, faster trip time and high reliability in low voltage applications. They are available in standard ratings from ½ to 20 amps.

Water Resistant Panel
A water resistant panel seal designed to fit over the push button actuator is available for applications that require this type of protection. [Part #14500-1 fits 7274-11 and others with 15/32" (1.19 cm) mounting brushing. Part #14500-5 fits 7274-2 (7/16 bushing).]



Performance Characteristics /\ Top
Vibration
10G minimum, 50–500 Hz (other vibration levels available)
Mechanical Shock
35G
Acceleration
10G
Weight
7274-2 (MS 26574): 28 grams maximum
7274-4 (MS 26574 A): 28 grams maximum
7274-11 (MS 22073): 33 grams maximum
7274-69 (MS 22073V): 33 grams
7274-70 (MS 26474L): 33 grams
Interrupt Current
0.50–5 amps: unlimited at 28 VDC
7.50–15 amps: 2,000 amps at 28 VDC
0.50–1.50 amps: unlimited at 120 VAC, 400 Hz
2–5 amps: 800 amps at 120 VAC, 400 Hz
7.50–20 amps: 500 amps at 120 VAC, 400 Hz
Endurance
2,500 cycles: 120 VAC, 400 Hz inductive
5,000 cycles: 120 VAC, 400 Hz resistive
2,500 cycles: 30 VDC inductive
5,000 cycles: 30 VDC resistive
10,000 cycles: Mechanical, no load


Calibration Chart For a Standard Device /\ Top
Temp.
Minimum Ultimate Trip
Maximum Ultimate Trip
Trip Time in seconds
200%
500%
1000%
25°C
115%
150%
2–20
0.16–1.20
0.046–0.80
-55°C
135%
180%
- - -
- - -
- - -
71°C
90%
130%
- - -
- - -
- - -
The most typical device is 1–20 amps. For others, please contact us.


Trip Curve /\ Top

Approximate Time-Current Curves


Drawings and Dimensions For Reference Only /\ Top
7274X
Device Type
Envelope Drawing
7274d1
- - -
7271d2
- - -
7274d4
- - -
7271d69
- - -
7274-2 and 7274-4 Diagram

7274-11 and 7274-69 Diagram


Spec Sheets For Our Most Popular Devices /\ Top
Specification sheets contain detailed drawings, amp ratings, characteristics, and more...
7274X
Device Type
Spec Sheet
7274-2
- - -
7274-4
- - -
7274-11
- - -
7274-69
- - -
7274-70
- - -
The World Depends on Sensors and Controls