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Klixon 7274 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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Voltage Drop /\ Top
Amp Rating
Max. Voltage Drop*
0.50
2.00
0.75
1.45
1
1.10
2
0.70
2.50
0.70
3
0.55
4
0.45
5
0.35
7.50
0.30
10
0.28
15
0.25
20
0.25
* Maximum voltage drop at nominal rated current.


Site Updated March 19, 2009
* * * 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
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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
Coming soon!
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