BSI 21/30439940 DC:2021 Edition
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BS EN 3774-004. Aerospace series. Circuit breakers, three-pole, temperature compensated, rated currents 1 A to 25 A – Part 004. UNC thread terminals. Product standard
| Published By | Publication Date | Number of Pages |
| BSI | 2021 | 14 |
This document 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.
They will continue to function up to the short-circuit current.
