CostSaver Composite EMI/RFI Junction Boxes

Glenair is the recognized leader in composite thermoplastic research and development for the interconnect accessory industry. Glenair's lightweight/high-strength CostSaver Composite EMI/RFI Junction Boxes are ideally suited for use in harsh environments where resistance to electromagnetic interference, corrosive fluids, high temperatures, shock and vibration is a critical requirement.

The boxes are designed to meet the shock and vibration requirements of MIL-C-901C and MIL-STD-167SHIPS. Box materials also meet stringent EMI/RFI/HIRF and indirect lightning strike performance specifications.



Box Configuration Guide

Step One: Select Box Size
Step Two: Select Box Color, Plating and Plating Coverage
Step Three: Select the (Optional) Grounding/Earthing Device
Step Four: Select Internal Terminal Rail Mounting Plate and Drilling
Step Five: Select Box Input-Output Components: Feed-Through Fittings
Step Six: Select Box Input-Output Components: Environmental Connectors
Step Seven: Select Wire and Cable Construction
Step Eight: Select Additional Penetrations for Hole-Cap Assemblies
Step Nine: Mount the Finished Assembly

Box Specification Worksheet (PDF) OR Online Worksheet Submission Form

Test Plan
Electrical Performance Specifications

Product Selection Guide
The 104-100 Mini is Glenair’s smallest and lightest box and is well suited for applications that do not require immersion protection from fluids. All other boxes are equipped with gasketed tongue and groove covers, and are appropriate for use in harsher application environments. All boxes are equipped with screw-type covers and stainless steel fasteners. Box selection is based principally on the internal volume and the external package size.

Box series numbers are for reference only. Please complete the online box specification worksheet for your specific box configuration.


Mini Junction Box (Series 140-100)
Typically used in controlled (non-environmental) applications (such as instrument cases) or as an junction box for miniature connectors.
Small Junction Box (Series 140-101)
Designed for use in harsh environmental applications (shipboard weather deck, up-mast, etc.) which require EMI/RFI protection and resistance to vibration and shock.
Medium Junction Box (Series 140-102)
Used in high-performance military and commercial applications as a terminal block enclosure, interconnect junction box or instrument case. Size is suitable for larger shell size connectors and fittings.
Large Junction Box (Series 140-103)
This large volume box is geared for cable storage and for use in large electrical and optical interconnect junctions. Top and side surface area accommodate large numbers of circular and rectangular connectors and fittings. The box is fully gasketed and ready for use in harsh environments.
Small Low-Profile Junction Box (Series 140-104)
Ideal for use in limited size and space applications, this composite box is geared for fiber optics and other miniaturized interconnect components. The box has been used extensively in high-performance air and space retrofit applications.
Medium Low-Profile Junction Box (Series 140-105)
This low-profile box is geared for tight spaces, such as under-seat cockpit and in-flight-entertainment systems. The box features three (optional) internal dividers for increased isolation of radiated EMI.
Terminal Rail/Block Mounting Plate (687-466)
Dimensional Details


Terminal Block Mounting Rail (687-467)
Dimensional Details
Hole Cap Assembly (687-461)
Dimensional Details

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