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).]

10G minimum, 50–500 Hz (other vibration levels available)

35G

10G

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

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

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

Trip Time in seconds

25°C

115%

150%

2–20

0.16–1.20

0.046–0.80

-55°C

135%

180%

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71°C

90%

130%

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7274d1

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7271d2

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7274d4

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7271d69

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