EN 3682-004:2012

Overview

EN 3682-004:2012 is a European Standard developed by CEN that specifies the requirements for Size 2 receptacles in the aerospace series of rectangular electrical connectors. These connectors are designed for rack-to-panel applications and feature interchangeable inserts, supporting continuous operating temperatures up to 150 °C. This standard forms part of a family of standards governing electrical connectors used extensively in aerospace and defense industries, ensuring reliability, interchangeability, and high-performance under rigorous conditions.

The standard complements EN 3682-005, which defines the corresponding Size 2 plug, together forming a matched pair for electrical connections in aerospace systems.

Key Topics

• Connector Family and Use
  EN 3682-004 defines dimensions, characteristics, and performance requirements for Size 2 receptacles in the rectangular connector series, designed for aircraft and spacecraft electrical systems.

• Design and Dimensions
  The receptacle features a rack-to-panel design with interchangeable contact inserts that allow flexible configurations. Dimensions, mounting hole sizes, and spacing are precisely detailed to ensure interoperability and adherence to aerospace mechanical requirements.

• Operating Temperature
  Rated for continuous use at 150 °C, this standard ensures connector performance in high-temperature environments typical in aerospace applications.

• Interchangeable Inserts
  Contact insert combinations include coaxial, triaxial, and quadrax contacts among others, providing versatility for varied signal and power requirements.

• Marking and Identification
  Clear marking requirements include manufacturer identification, part number, date of manufacture, and polarization codes, enabling traceability and reducing the risk of mismatching in critical aerospace systems.

• Panel Cut-Out and Mounting
  Recommended panel cut-out dimensions and mounting provisions are specified to facilitate precise installation and maintain mechanical integrity under operational stresses.

• Designation System
  The standard provides a detailed connector identification scheme based on housing type, size, insert combination, polarization, and contact delivery, enabling standardized ordering and engineering documentation.

Applications

EN 3682-004:2012 connectors are critical for aerospace and defense industry applications where high-reliability electrical connections are mandatory. Typical applications include:

• Avionics rack systems requiring standardized, removable, and rugged electrical interfaces.
• Military aircraft electrical systems demanding connectors that withstand high temperatures and mechanical vibrations.
• Spacecraft and satellite rack-to-panel assemblies requiring secure, standardized connectors with repeatable performance.
• Ground support equipment interfacing with aerospace systems to ensure compatibility and maintenance convenience.

The standard ensures interoperability across a wide range of aerospace platforms, optimizing maintenance, logistics, and lifecycle costs.

Related Standards

• EN 3682-001: Technical specification for aerospace series connectors, providing general requirements applicable across the connector family.
• EN 3682-002: Details performance specifications and contact arrangements, essential for understanding insert configurations compatible with the Size 2 receptacle.
• EN 3682-005: Defines the mating Size 2 plug for the receptacle, completing the connector pair specification.
• ISO 263: Refers to screw thread standards applicable to mounting hardware, ensuring mechanical compatibility in connector installation.

By conforming to EN 3682-004:2012 and its related aerospace connector standards, manufacturers and system designers guarantee compatibility, safety, and performance in demanding aerospace environments.

Keywords: EN 3682-004, aerospace connectors, rectangular electrical connectors, size 2 receptacle, rack to panel connectors, interchangeable inserts, high-temperature connectors, aerospace electrical systems, CEN aerospace standards, plug and receptacle connectors.