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BS EN 4839-003:2018

BS EN 4839-003:2018

$102.76

Aerospace series. Arc Fault Circuit breakers, three-pole, temperature compensated, rated currents 3 A to 25 A, 115/200 V a.c. 400 Hz constant frequency – Without auxiliary contacts. Product standard

Published By Publication Date Number of Pages
BSI 2018 16
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This European Standard specifies the required characteristics for three-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.

PDF Catalog

PDF Pages PDF Title
2 undefined
6 1 Scope
2 Normative references
3 Terms and definitions
7 4 Dimension and mass
4.1 Dimensional characteristics
8 4.2 Electrical diagram
4.3 Mass
4.4 Panel mounting
5 Characteristics
5.1 Material, surface treatment
9 5.2 Mechanical characteristics
5.2.1 Fasteners
5.2.2 Recommended tightening torque of attaching nut for installation
5.2.3 Recommended tightening torque of connection hardware for installation
5.2.4 Resistance to vibrations
5.2.4.1 Combined test: ambient temperature at 70 °C and vibrations
5.2.4.2 Combined test: ambient temperature at 85 °C, altitude and vibrations
5.2.5 Resistance to shocks
5.2.6 Mechanical endurance
5.3 Environment characteristics
5.3.1 Humidity
5.3.2 Corrosion
5.3.3 Contaminating liquids
5.3.4 Susceptibility towards electrical perturbations
10 5.4 Electrical characteristics
5.4.1 Nominal voltage of operational circuits
5.4.2 Voltage drop at In and low current
5.4.3 Minimum and maximum tripping thresholds
11 5.4.4 Overload trip
5.4.5 Short-circuit values
12 5.4.6 No-load and load endurance
5.4.7 Dielectric rigidity
5.4.8 Insulation resistance
5.5 Arc fault performance
13 6 Designation
7 Rated current code
8 Delivery codes
14 9 Marking
10 Technical specification

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BS EN 4839-003:2018
$102.76