Eaton 85100A2255SZ50 Receptacle - MIL-DTL-26482 SI qualified

Part Number: 85100A2255SZ50
Manufacturer
Eaton
Part number
85100A2255SZ50

Quick Summary

The Eaton Souriau 851 series MIL-DTL-26482 SI qualified receptacle enables rugged, field-ready electrical connections for aerospace, defense, and industrial automation. Engineers face challenges achieving reliable mating under vibration, shock, and wide temperature swings, which can drive downtime and costly warranty work. With MIL-DTL-26482 SI qualification, REACH environmental compliance, and a wide -40 °C to 125 °C operating range, this connector supports rugged, compliant mission profiles. For harnesses with a square flange receptacle and 55 solder-cup contacts, this solution delivers consistent performance, straightforward installation, and scalable channel counts for growing systems. It also integrates with aluminium shell and cadmium plating for corrosion resistance in harsh environments.

Product Information

Extended Description

85100A2255SZ50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, female solder contacts, pos Z; 85100A2255SZ50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100A2255SZ50
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
Z
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: High-density 55-contact square flange receptacle supports 55 cavities, enabling multi-circuit connectivity in compact harnesses. Business impact: Reduces loom complexity and installation time while improving signal integrity, which translates to lower assembly costs and higher equipment reliability in aerospace and defense applications. Application: Ideal for avionics racks, military control panels, and industrial automation controllers with tight form factors. Feature: 1/3 Bayonet coupling provides quick, secure mating with vibration resistance. Business impact: Speeds field assembly and maintenance while preserving mating reliability under dynamic loads, reducing downtime during servicing and inspections. Application: Suitable for harsh environments where frequent connector connections are required, such as mobile platforms and on-site equipment. Feature: Aluminium shell with cadmium plating delivers robust mechanical protection and corrosion resistance. Business impact: Extends service life in harsh environments and simplifies compliance with legacy salt spray and environmental exposure requirements. Application: Solar, marine-independent installations and rugged industrial environments. Feature: Straight backshell adaptor and Z orientation enable flexible routing and easy panel mounting. Business impact: Improves installation ergonomics and compatibility with existing harness designs, lowering integration risk. Application: Panel-mount avionics and multi-cable harness assemblies in plant floors and aircraft interiors. Feature: 55 solder cup contacts, socket (female) gender, and loaded contact delivery ensure ready-to-wire performance. Business impact: Reduces on-site preparation and soldering steps, boosting field performance and traceability. Application: Controlled production lines, test rigs, and repair depots where quick, reliable solder connections are required.

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FAQs

Yes. The 85100A2255SZ50 uses a 1/3 Bayonet coupling and is designed as a square flange receptacle, enabling fast, secure mating in constrained spaces typical of avionics panels and rugged industrial equipment.
The connector operates from -40 °C to 125 °C, offering reliable performance across extreme temperatures. It features an aluminium shell with cadmium plating for robust mechanical and corrosion resistance.
Absolutely. The MIL-DTL-26482 SI qualification, square flange receptacle design, and 55 solder-cup contacts make it suitable for aerospace and defense harnesses as well as rugged industrial automation systems requiring high-density connectivity.
This receptacle is MIL-DTL-26482 SI qualified and REACH compliant, aligning with stringent aerospace, defense, and environmental standards while supporting compliant channel densities in critical installations.
Delivered with a connector, loaded with solder cups, and featuring a straight adaptor with Z orientation, it reduces field prep time, simplifies maintenance, and enhances reliability—delivering measurable uptime improvements and lower lifecycle costs.