Eaton 85100A2255SX50 Receptacle - MIL-DTL-26482 SI
Part Number: 85100A2255SX50
Quick Summary
The Eaton Souriau 85100A2255SX50 MIL-DTL-26482 SI qualified square flange receptacle is built for rugged industrial applications. Engineers often face compatibility, corrosion risk, and space constraints on demanding panels, and this design addresses those pain points with tight tolerances and robust materials. MIL-DTL-26482 SI qualification and REACH environmental compliance underpin reliability in aerospace and harsh industrial environments, while the aluminium shell and cadmium plating deliver durability without adding excessive weight. By combining dense circuit density with straightforward installation, this connector helps streamline procurement and reduce total cost of ownership for control panels and automation equipment.
Product Information
Extended Description
85100A2255SX50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, female solder contacts, pos X; 85100A2255SX50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100A2255SX50
Product Length/Depth
44 mm
Product Height
40 mm
Product Width
40 mm
Product Weight
58.5 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Adaptor
Connector accessory option
Delivered with connector
Connector orientation
X
Connector type
Receptacle
Contact delivery
Loaded
Contact gender
Socket (Female)
Contact type
Solder Cup
Coupling type
1/3 Bayonet
Layout
55
Plating
Cadmium
Shell material
Aluminium
Shell size
22
Operating temperature - max
125 °C
Operating temperature - min
-40 °C
Receptacle type
Square Flange Receptacle
Number Of Contacts
55
Number of cavity #20
55
Feature: MIL-DTL-26482 SI qualification and pre-loaded solder cup contacts. Business Impact: Delivers reliable mating performance and reduces assembly risk on critical panels. Application: Aerospace control panels and rugged industrial equipment where integrity matters. The 55-contact layout supports dense wiring, enabling high I/O density in a compact receptacle and reducing harness complexity while accelerating panel fabrication. Feature: 1/3 Bayonet coupling with straight backshell adaptor and delivered-with-connector configuration. Business Impact: Enables fast, tool-free mating and repeatable field maintenance, cutting installation time and error rates. Application: On-site equipment and modular panels in automation lines. Feature: Cadmium plating on an aluminium shell with a size 22 shell and 58.5 g weight. Business Impact: Provides corrosion resistance in harsh environments while maintaining lightweight, space-efficient designs. Application: Outdoor and industrial installations where durability and weight savings matter. Feature: Operating temperature range from -40 °C to 125 °C. Business Impact: Ensures reliable performance across extreme plant temperatures and altitudes, reducing downtime. Application: Automotive, rail, and process automation exposed to temperature swings. Feature: 55 contacts across 55 cavities with a square flange receptacle form factor and X orientation. Business Impact: Supports scalable circuit density with a stable, compact footprint, improving panel layout and reliability. Application: Complex control cabinets and multi-circuit connectors in harsh environments.
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FAQs
Installation starts with aligning the square flange recess on the 85100A2255SX50 to the panel cutout. Use the straight backshell adaptor for straightforward conduit routing and secure the 55-contact receptacle with standard panel mounting hardware. The 1/3 bayonet coupling enables quick mating with the corresponding plug, while solder cup contacts are ready for manual soldering or automated termination. Confirm compatibility with the mating connector and ensure a clean, corrosion-protected finish for long-term reliability.
Key specs include MIL-DTL-26482 SI qualification, 55 contact positions (cavities), cadmium plating on an aluminium shell, shell size 22, and operating temperature range from -40 °C to 125 °C. It features a 1/3 bayonet coupling, straight backshell adaptor, and is delivered with connector contacts loaded in solder cup configuration. These details translate into robust, high-density I/O suitable for demanding environments.
Yes. The MIL-DTL-26482 SI qualification is designed for aerospace-grade reliability, while cadmium plating provides additional corrosion resistance on an aluminium shell. The -40 to 125 °C operating range supports extreme environments found in aerospace and heavy industry, and the square flange form factor helps maintain secure panel integration in challenging installations.
The connector is REACH compliant, addressing chemical management requirements in European regulations. MIL-DTL-26482 SI qualification ensures formalized performance in rugged applications. The cadmium plating, while providing corrosion protection, should be evaluated against any internal sustainability or supplier guidelines for cadmium use.
The 85100A2255SX50’s dense 55-contact arrangement reduces harness complexity and panel footprint, lowering assembly time and cabling costs. Its robust materials and plating offer long service life in harsh environments, minimizing maintenance downtimes. Quick mating via the 1/3 bayonet and pre-loaded solder cups further reduce field labor and improve uptime for automated systems.