This standard specifies the characteristics of three-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 for ratings <= 15 A and - 55 °C to 90 °C for ratings > 15 A and at an altitude of 22 000 m max.
These circuit breakers are operated by a push-pull type single pushbutton (actuator), with delayed action
"trip-free" tripping with a signal contact which is open when main contacts are closed, and inversely.
They will continue to function up to the short-circuit current.