What is BS EN 4838-004 - Arc fault circuit breakers about ?
BS EN 4838-004 is a European standard that specifies required characteristics for single-pole, arc fault circuit breakers rated currents from 3 A to 25 A, switching capacity 65 In, for use in aircraft electrical systems. Their operating temperatures are between − 40 °C to 85 °C at a maximum altitude of Z = 15 000 m. The thermal protection is temperature compensated and operates between − 55 °C and 125 °C.
These arc fault 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.
Who is BS EN 4838-004 - Arc fault circuit breakers for ?
BS EN 4838-004 on arc fault circuit breakers is applicable for:
- Aerospace avionic electrical and fibre optic technology
- Manufacturers of circuit breakers
- Aerospace and defence industries
- Designers of circuit breakers
- Aircraft electrical manufacturers
- Design engineers for airplanes
Why should you use BS EN 4838-004 - Arc fault circuit breakers ?
Arc fault circuit breakers protect the branch circuit wiring from dangerous arcing faults that could initiate an electrical fire.
BS EN 4838-004 provides best practice guidance on the panel mounting, mass, material, surface treatment, and Arc fault performance.
BS EN 4838-004 also provides you with dimensional, mechanical, electrical, and environmental characteristics of arc fault circuit breakers. By using these guidelines, you can make the best quality circuit breakers that support aircraft systems.
