Aerospace series Circuit breakers@ single-pole@ temperature compensated@ rated currents 20 A to 50 A Part 004: UNC thread terminals Product standard (Edition P 2)
"This standard specifies the characteristics of single-pole circuit breakers@ temperature compensated with a rated current from 20 A to 25 A@ used in aircraft on-board circuits at a temperature between ?C 55 ??and 125 ??and at an altitude of 15 000 m max. These circuit breakers are operated by a push-pull type single push button (actuator)@ with delayed action ""trip-free"" tripping. They will continue to function up to the short-circuit current."