This standard specifies the characteristics of single-pole circuit breakers, temperature compensated with a
rated current from 1 A to 25 A, used in aircraft on-board circuits at a temperature between - 55 °C and
125 °C and at a maximum altitude of Z = 22 000 m.
These circuits breakers are operated by a push-pull type single push button (actuator), with delayed action
"trip-free" tripping with a polarized signal contact which is open when main contacts are closed, and inversely.
They will continue to function up to the short-circuit current.