MIL-PRF-83383E
SOCIETY OF AUTOMOTIVE ENGINEERS
SAE - AS1241 - Fire Resistant Phosphate Ester Hydraulic Fluid for Aircraft.
SAE - AMS1424 - Deicing/Anti-Icing Fluid, Aircraft, SAE Type l.
(Copies of these documents are available from https://www.sae.org/ or the Society of Automotive Engineers, 400
Commonwealth Drive, Warrendale, PA 15096-0001)
(Non-Government standards and other publications are normally available from the organizations that prepare or
distribute the documents. These documents also may be available in or through libraries or other informational
services.)
2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited
herein (except for associated specifications, specification sheets, or MS sheets), the text of this document takes
precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific
exemption has been obtained.
3. REQUIREMENTS
3.1 Specification sheets. The individual item requirements shall be as specified herein and in accordance with the
applicable specification sheet. In the event of any conflict between the requirements of this specification and the
specification sheet, the latter shall govern.
3.2 Qualification. RCCB's furnished under this specification shall be products that are authorized by the qualifying
activity for listing on the applicable qualified products list before contract award (see 4.4 and 6.3).
3.3 Materials. The materials shall be as specified herein. When materials are not specified, materials shall be
used which enable the RCCB's to meet the performance requirements of this specification. Acceptance or approval
of any constituent material shall not be construed as a guarantee of the acceptance of the finished product.
3.3.1 Metals. All metals used in the construction of circuit breakers shall be corrosion resistant or shall be suitably
protected to resist corrosion. The use of dissimilar metals shall be avoided. Where contact between dissimilar metals
is unavoidable, the metals shall be protected against electrolytic corrosion. When thermostatic bimetals and trimetals
are used, corrosion resulting from tests specified herein shall not adversely affect the performance of the breaker.
3.3.1.1 Dissimilar metals. When dissimilar metals are used in intimate contact with each other, protection against
electrolysis and corrosion shall be provided. The use of dissimilar metals in contact, which tend toward active
electrolytic corrosion is not acceptable. However, metal plating or metal spraying of dissimilar base metals to provide
similar or suitable abutting surfaces is permitted. The use of dissimilar metals separated by a suitable insulating
material is also permitted. Dissimilar metals are defined in 6.4.
3.3.2 Plastics. Plastic materials may be used provided the RCCBs meet all the performance requirements of this
specification. The plastic materials used shall neither support combustion nor give off noxious gases when subjected
to arcs, such as those caused by interrupting heavy short circuit currents, or explosions of gaseous vapors to which
the materials may be subjected in service. Plastic materials with cellulose fillers will not be permitted in parts that may
be subjected to arcing or surface creepage. For guidance on plastics, see 6.4.1.
3.3.3 Fungus resistance. Materials shall be used that are not nutrients for fungus. For guidance on fungus
resistance, see 6.4.2.
3.3.4 Solder. Solder for electronic components shall be of such a quality as to enable the RCCB to meet the
performance requirements of this specification. For guidance on solder, see 6.4.3.
3.3.5 Soldering flux. Soldering flux for electronic components shall be of such a quality as to enable the RCCB to
meet the performance requirements of this specification. No acid, acid salts, or type RA fluxes shall be used in
preparation for or during soldering. For guidance on soldering flux, see 6.4.3.
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