Aerospace series Arc Fault Circuit breakers@ single-pole@ temperature compensated@ rated current 3 A to 25 A 115 V a.c. 400 Hz constant frequency Part 001: Technical specification (Edition P 1)
"This standard specifies the single-pole temperature compensated arc fault circuit breakers with or without signal contacts@ rated from 3 A to 25 A and used in aircraft on-board circuits. In any operating state a ""trip-free"" tripping is ensured. These items are designed to protect aircraft wiring system from circuit overload and arc faults. It describes specific environmental@ electrical and mechanical characteristics and the stringency of tests to be applied according to test methods of EN 3841-100. If the design of the arc fault circuit breakers contains software or complex hardware@ as a minimum@ the software and hardware shall be developed in accordance with RTCA DO-178B or C@ DAL C and RTCA DO-254@ DAL C@ respectively. These arc fault circuit breakers are intended for use in aircraft with electrical supplies in accordance with EN 2282."