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Klixon 3TC Series |
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Aircraft Circuit Breakers |
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Amp Rating |
Max. Voltage Drop* |
15 |
0.25 |
20 |
0.25 |
25 |
0.25 |
30 |
0.25 |
35 |
0.25 |
* Maximum voltage drop at nominal rated current. |
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Sensata > Products > Klixon Brand > Circuit Breakers > Aircraft >
Klixon® 3TC series
15–35 amp, single–phase, miniature ambient compensated
Features and Overview |
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Miniature size |
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Light weight |
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Trip–free design |
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Options include: longer push button, high vibration, random vibration, metric mounting thread, metric terminal thread, dust boot (part #14500-1 fits 15/32 bushing, part #14500-5 fits 7/16 bushing), terminal hardware |
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AS58091 qualified |
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Current rating: 15 to 35 amps |
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Coordinated ratings |
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High vibration resistance (option) |
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High interrupting capacity |
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Typical use: Where ambient temperature exceeds the 160°F (71°C) maximum of non–ambient compensated thermal circuit breakers |
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Klixon single–phase TC devices are
the smallest, lightest, high performance aircraft circuit breakers available today. They
represent the state-of-the-art protection of today’s aerospace power systems. Their light
weight and small size make them especially well suited for aircraft, avionics and electronic
systems.
The Klixon trademark has set the standard for aerospace circuit breakers. For a small,
light weight configuration, the TC series offers the endurance and reliability required by
exacting military specifications, and are available in standard current ratings from 15
through 35 amperes. The 3TC is available in 15 to 35 amps.
Coordination
The 3TC single–phase and three–phase breaker ratings are coordinated so that in the event of a fault of up to 6,000 amps let–through current any rating will trip before another circuit breaker twice its rating. This results in improved overall equipment performance since only the smallest faulted circuit is interrupted, while larger circuits remain operational.
Ambient Temperature Compensation
Ambient compensated circuit breakers permit system designers to specify smaller gauge wire where the circuit breaker and wiring are exposed to different ambient temperatures. They are especially suited for application where ambient temperature exceeds the 160°F (71°C) maximum of non–ambient compensated thermal circuit breakers. The TC series may be applied where operating temperatures are as high as 250°F (121°C) with no derating of the circuit breaker. This eliminates the need for cooling air and allows substantial weight, space, and cost savings.
Trip–Free
The complete line of TC series circuit breakers is trip–free. The circuit breaker cannot be maintained closed during an overload even with the actuator button held closed.
High Short Circuit Capacity
For its miniature size, the 3TC series offers unusually high current interrupting capacity. Overloads up to 6,000 amps at 28 VDC or 2,000–3,500 amps at 120 VAC, 400 Hz can be safely interrupted without affecting calibration or operating performance in the standard 3TC series.
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Performance Characteristics |
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Vibration |
10G minimum, 50–500 Hz (other vibration levels available) |
Mechanical Shock |
50G |
Acceleration |
10G |
Weight |
36 gram maximum (3TC14) |
Interrupt Current |
15–35 amps: 6,000 amps at 28 VDC
15–35: 2,000 amps at 120 VAC, 400 Hz
25 amps: 1,800 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 |
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Temp. |
Minimum Ultimate Trip |
Maximum Ultimate Trip |
Trip Time in seconds |
200% |
500% |
1000% |
25°C |
115% |
138% |
4–20 |
0.40–1.70 |
0.10–0.40 |
-54°C |
115% |
165% |
6–35 |
0.55–3.00 |
0.15–0.70 |
121°C |
85% |
145% |
2–15 |
0.25–1.00 |
0.06–0.25 |
For others, please contact us. |
Drawings and Dimensions For Reference Only |
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Klixon 3TC14 is shown here: |
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3TCX-Y |
Where 3TCX is the basic part number and –Y is the amp rating. For more detailed information, please see spec sheets below. |
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Spec Sheets For Our Most Popular Devices |
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Specification sheets contain detailed drawings, amp ratings, characteristics, and more... |
3TCX |
Device Type |
Spec Sheet |
3TC2 |
MS14105 |
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3TC14 |
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3TC27 |
MS14105(L) |
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