This standard defines the required characteristics for single-pole, temperature compensated circuit breakers, rated currents from 20A to 50A, metric thread terminals, for use in aircraft electrical systems, at temperatures between -55degreeC and 125degreeC and at a maximum altitude of Z = 15000m. It shall be used together with EN2794-001. These circuit breakers are intended for use in aircraft with electrical supplies in accordance with EN2282.