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Klixon 6752-12 Series
 
 
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Site Updated September 19, 2017

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

Klixon® 6752-12 series
2½ to 65 amp, single–phase, ambient compensated



Features and Overview Performance Characteristics
Amps, Volts, MS Number Part Numbering
Calibration Chart Spec Sheet PDFs
Drawings and Dimensions Trip Curve
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Features and Overview /\ Top

Trip–free design
Single–phase
Ambient compensated
MIL-DTL-27715 qualified
Current rating: 2.5 to 65 amps
Long, trouble–free operation: 20,000 operating cycles
High vibration resistance
High interrupting capacity
Option available: Auxiliary circuits
 
Circuit protection unaffected by temperature fluctuations (ambient compensated from -53.9°C to 93.3°C)
Only faulted line circuits opened (coordination ratings insure that branch circuit breakers trip first under fault conditions)
Typical use: Aircraft electrical systems
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Klixon
Aircraft Circuit Breakers

The Klixon 6752-12 series thermal–magnetic circuit breakers are designed and manufactured to meet the more stringent military standards of today’s aircraft electrical systems.

The interrupting capacity, vibration resistance and longer cycling life of the 6752-12 series exceed previous military standards. In addition, the 6752-12 series provide ambient compensation, fault coordination of all ratings, and an option for auxiliary circuits.

Coordination
The 6752-12 series breaker ratings are coordinated so any rating will trip before another rating twice its capacity in the event of a fault. This results in improved overall equipment performance since only the smallest faulted circuit is interrupted, while larger circuits remain operational.

Ambient Temperature Compensation
Substantially unaffected by ambient temperature, the 6752-12 circuit breakers maintain their performance capabilities by means of a thermal compensator in the temperature range of -53.9°C to 93.3°C.

High Short Circuit Capacity
A de–ionizing grid and magnetic assist enable the 6752-12 to successfully interrupt four fault currents of 6,000 amperes — two at sea level and two at 60,000 feet — on either a 120 VAC, 400 Hz system or a 30 VDC system.

Auxiliary Circuit
The 6752-12 is available with auxiliary switch. For part numbers and characteristics, please contact Sensata Technologies



Performance Characteristics /\ Top
Vibration
10G minimum, 5–2,000 Hz (other vibration levels available)
Mechanical Shock
25G
Acceleration
10G
Weight
0.2 pound maximum
Interrupt Current
2½–65 amps: 6,000 amps at 30 VDC
2½–50 amps: 6,000 amps at 120 VAC, 400 Hz
65 amps, 3000 amps at 120VAC, 400 Hz
Endurance
5,000 cycles: 120 VAC, 400 Hz inductive
5,000 cycles: 120 VAC, 400 Hz resistive
10,000 cycles: Mechanical, no load
20,000 cycles: Total


Amps, Volts, MS Cross Reference /\ Top
Klixon Part
Mil–spec Number
Amp
Voltage Drop
6752-12-2½
MS 24571-2
MS 24571-2V
2.5
0.60
6752-12-5
MS 24571-5
MS 24571-5V
5
0.40
6752-12-7½
MS 24571-7
MS 24571-7V
7.5
0.30
6752-12-10
MS 24571-10
MS 24571-10V
10
0.25
6752-12-15
MS 24571-15
MS 24571-15V
15
.025
6752-12-20
MS 24571-20
MS 24571-20V
20
.025
6752-12-25
MS 24571-25
MS 24571-25V
25
.025
6752-12-35
MS 24571-35
MS 24571-35V
35
.025
6752-12-50
MS 24571-50
MS 24571-50V
50
.025
6752-12-65
-
-
65
.030
When ordering, request S.R. 12507-356 to mark MS part number with "V". To view qualifications on all Klixon aircraft circuit breakers, see the cross reference chart.


Calibration Chart For a Standard Device /\ Top
Device
Trip Time in seconds
200%
400%
1000%
6752-12-2½
12–32
2.30–6.50
0.32–1.10
6752-12-5
14–36
2.50–6.50
0.45-1.10
6752-12-7½
16–40
2.50–7.00
0.34–1.10
6752-12-10
18–42
2.70–7.75
0.45–1.20
6752-12-15
20–45
2.70–8.00
0.36-1.20
6752-12-20
20–48
2.70–8.00
0.36–1.20
6752-12-25
20–50
2.70–9.50
0.36–1.20
6752-12-35
20–53
2.70–8.00
0.36-1.20
6752-12-50
20–55
2.70–10.00
0.36–1.40
6752-12-65
15-65
2.3-7.5
 


Trip Curve /\ Top

Approximate Time-Current Curves


Drawings and Dimensions For Reference Only 6752-12 (2.5-50A depicted) /\ Top
6752-12
Envelope Drawing
6752-12
6752-12-65
6752-12 Diagram


Part Numbering /\ Top
6752-12-X
Where 6752-12 is the basic part number and –X is the amp rating.


Spec Sheets /\ Top
Specification sheets contain detailed drawings, amp ratings, characteristics, and more...
6752-X
Spec Sheet
6752-12
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