SIST EN 4644-003:2016

Overview

SIST EN 4644-003:2016 is a European Standard developed by CEN and ASD-STAN that defines the product specifications for rectangular inserts used in aerospace series connectors. These connectors are designed for electrical and optical applications with rectangular, modular inserts capable of continuous operation at high temperatures of 175 °C or 125 °C. This standard ensures interoperability, quality, and reliability of inserts that are coupled using a locking mechanism or rack and panel system. It is part of a multipart series focused on aerospace-grade connectors, emphasizing durability and performance in demanding environments.

Key Topics

• Rectangular Inserts Specifications: Specifies dimensions, mass, and physical characteristics of inserts for male and female contacts, including variants with or without size 8 contact cavities.
• Temperature Ratings: Defines endurance for continuous operation at either 175 °C or 125 °C, critical for aerospace applications with high thermal requirements.
• Environmental Classes: Categorizes inserts into environmental (with seals and grommets), semi-environmental, and non-environmental types to guide usage based on operational conditions.
• Connector Coupling: Details coupling by secure locking mechanisms or rack and panel configurations to ensure stable and reliable connections in aerospace systems.
• Marking and Identification: Establishes rules for marking inserts with identifiers including standard number, contact arrangement, type (male/female), polarization, grounding, manufacturer info, and date code for traceability.
• Interoperability: Insets conform to EN 4644-001 and EN 4644-002 standards for technical specs and contact arrangements ensuring compatibility within the aerospace connector family.

Applications

SIST EN 4644-003:2016 inserts are integral components in aerospace and defense electrical and optical connector systems. Practical applications include:

• Aircraft Avionics and Systems: Ensuring reliable high-temperature connections for flight control, navigation, and communication equipment.
• Spacecraft Electrical Modules: Providing rugged inserts capable of withstanding extreme thermal conditions in space environments.
• Military Aerospace Equipment: Supporting harsh environmental conditions with robust sealing and grommets in connectors for tactical systems.
• Industrial Aerospace Manufacturing: Standardized components optimize assembly, maintenance, and interoperability in aerospace production lines.

Related Standards

• EN 4644-001: Technical specification for aerospace series rectangular modular electrical and optical inserts.
• EN 4644-002: Defines performance requirements and contact arrangements for the same family of connectors.
• ASD-STAN Standards: Developed by the Aerospace and Defence Industries Association of Europe, governing related aerospace connector products and systems.

Using SIST EN 4644-003:2016 ensures that electrical and optical modular rectangular inserts meet stringent European aerospace standards for performance, safety, and environmental resistance. Manufacturers, engineers, and system integrators benefit from its detailed requirements for thermal endurance, environmental sealing, and mechanical interface, facilitating high-quality aerospace connector solutions.