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ISO 3456:1975

ISO 3456:1975

Aircraft — Lever-operated manual switches (Class 3) — Performance requirements

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General Information

Status : Active

Standard Type : Main

Document No : ISO 3456:1975

Document Year : 1975

Pages : 6

Edition : 1

Section Volume : Aerospace electrical requirements (ISO/TC 20/SC 1.)

ICS : Aerospace electric equipment and systems (49.060)

Specifies the values for single- and triple-hole mounting of these switches for use in nominal 28 V d. c. and 115/200 V three-phase, 400 Hz a. c. systems. They are environmentally sealed and suitable for higher altitude and temperature conditions than are Class 2 switches which are sealed only at the lever entry. They do not have the positive action features of the Class 1 and Class 2 switches specified in ISO 1466.