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7277 Series

Home Products Circuit Breakers Aircraft Circuit Breakers 7277 Series
General
Features
Specifications
General
  • Single–phase
  • 0.5–20 amps
  • 115VAC 400Hz, 28VDC
  • Non–temperature compensated
7277

Klixon 7277 series is designed for applications that do not require the tighter performance characteristics and approvals of our military circuit breakers. Originally developed as an alternative to slow blow fuses, the trip–free 7277 is used extensively as primary electrical circuit protection on general aviation aircraft.

The military grade version of this circuit breaker is the Klixon 7274-2 series. The 7277 and 7274-2 series circuit breakers are physically and electrically identical, with the exception that the 7277 has wider calibration limits.

Features
  • Miniature size
  • Light weight
  • Trip–free design
  • Current rating: 0.5 to 20 amps
  • High vibration resistance
  • Options include: dust boot (part #14500-1 fits 15/32 bushing, part #14500-5 fits 7/16 bushing), auxiliary switch, terminal hardware, longer push button
Specifications
Vibration
10G minimum, 50–500 Hz (other vibration levels available)

Mechanical Shock
35G

Acceleration
10G

Weight
28 grams maximum

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

DEVICE APPLICATION APPROVAL ACTUATOR RATING (Amp) REMARKS
2TC, 3TC Aircraft power distribution MS 3320, MS 14105 Button 1-35 Subminiature, ambient compensated 1 pole, auxiliary switch available.
5TC Aircraft, avionics, and electrical systems - Button 20-50 Ambient compensated
6TC, 9TC Aircraft power distribution MS 14154, MS 14153 Button 1-35 Subminiature, ambient compensated, 3 pole
2TC49 Aircraft power distribution M5809/1 Button 2.5-15 Dual Safety 2TC
3TC7 Aircraft, avionics, and electrical systems MS 25244 Button 5-35 Lightweight, high performance, non-ambient temperature, compensated
6752-12, 6752-100, 6752-305 Aircraft power distribution, ground support MS 24571, MS 25361 Button 2.5-100 1 Pole – 6752-12, 1 Pole – 6752-100, 3 Pole – 6752-305
7274 Aircraft power distribution, Avionics, ground support, missile systems MS 26574, MS 22073 Button 0.5-20 Quick acting, subminiature, auxiliary switch available
7277 Protection of wire, motors, solenoids, transformers in electronics - Button 0.5-20 Wide calibration version of 7274
7270, 7271 Aircraft power distribution MS 24509, MS 24510 Toggle, Button 3-35 Toggle or push button
20TC2 Combination circuit switching & protection, light aircraft, electronics, vehicles - Rocker 3-35 Rocker switch type
3SB Commercial and military simulators Button - Push button
WP Data Tables