Part# 7270-1-71/2
MFR Model# 7270-1-7.5


The 7270/7271 series circuit breakers were designed to utilize less behind panel space while protecting wire and cable in aircraft and ground support equipment on either 120 VAC, 400 Hz or 30 VDC systems.

The units are available with neck mounting (7270-1 and 7271-8) or standard cover plate (7270-7 and 7271-3). In each of these circuit breakers, the bi-metallic element assures uniform current distribution throughout its responsive area. This design reduces current density at the critical areas, resulting in an element having a much higher interrupting capability than conventional design. Inherently resistant to shock and vibration, the disc element is capable of precise calibration settings and will retain the initial calibration within close tolerances throughout the service life of the breaker.

Both circuit breakers have conventional actuator action; i.e., the toggle actuator on the 7270 moves to the OFF position for trip indication and the button the 7271 pops out. A standard black button with a white collar is used.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


  • Trip-free
  • Snap-acting Thermal Element
  • Simplicity of Design
  • Lightweight
  • High Rupture Capacity - 3500 Amps, 120 VAC, 400 Hz 4000 Amps, 30 VDC
  • Small Size


Our avionics department uses these as needed.

Cindy M
October 30, 2017


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Can these Klixon breakers be used in a 12 volt systems?

Yes, these can be used in 12 volt.

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