Eaton 85100AC2255S50 Receptacle - MIL-DTL-26482 SI
Part Number: 85100AC2255S50
Quick Summary
Eaton Souriau 851 series MIL-DTL-26482 SI qualified connectors enable rugged, reliable receptacles for aerospace and industrial equipment. Design engineers often wrestle with space, mating reliability, and environmental exposure in harsh settings. This solution carries MIL-DTL-26482 SI qualification and REACH compliance to support compliant, long-life connections. Used in aerospace, defense, and industrial harnesses, it delivers compact density, compatibility with solder-cup contacts, and lightweight aluminium construction for cost-effective assemblies. The 53 mm depth and 40 mm width provide a compact footprint suitable for tight equipment bays, while the 55-position layout supports high-density cable harnessing. Cadmium plating offers corrosion resistance in aggressive environments, complemented by a straight backshell adaptor for straightforward field assembly and maintenance.
Product Information
Extended Description
85100AC2255S50 Eaton: Square flange receptacle, straight adaptor, cadmium plating, female solder contacts, pos N; 85100AC2255S50
Product Name
Eaton Souriau 851 series MIL-DTL-26482 SI qualified
Catalog Number
85100AC2255S50
Product Length/Depth
53 mm
Product Height
40 mm
Product Width
40 mm
Product Weight
69.8 g
Environmental conditions
REACH
Backshell angle
Straight
Backshell type
Adaptor
Connector accessory option
Delivered with connector
Connector orientation
N
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 1: 55 contacts in a square flange receptacle layout with a 53 mm depth and 40 mm footprint. Business impact: enables high-density wiring within tight enclosures, reducing panel space and wiring complexity while maintaining signal integrity. Application: aerospace panel assemblies and compact industrial equipment harnesses. Feature 2: 1/3 Bayonet coupling. Business impact: faster mating and demating, improving field service time and reducing downtime on production lines. Application: on-aircraft or mobile equipment where quick connection cycles are critical. Feature 3: Solder Cup contact type with socket (female) delivery. Business impact: secure, reliable terminations for cable harnesses, lowering reheating and rework costs. Application: high-reliability control cabinets and motor drives. Feature 4: Cadmium plating on an aluminium shell (Shell size 22). Business impact: corrosion resistance with lightweight construction, supporting long-term durability and lower lifecycle costs. Application: humid or salt-spray environments in defense and industrial automation. Feature 5: Straight backshell adaptor and delivered-with connector configuration. Business impact: simplified installation and replacement, reducing field engineering time and error rates. Application: retrofit projects and OEM assemblies requiring predictable fit. Feature 6: Wide operating temperature range (-40 °C to 125 °C). Business impact: broad environmental tolerance, ensuring performance across geographies and seasonal swings. Application: aerospace, automotive test rigs, and outdoor industrial systems. Feature 7: REACH compliance and aluminium shell with cadmium plating. Business impact: regulatory alignment and durable electrical performance in harsh environments, lowering compliance risk. Application: global deployments with strict material restrictions and long service life.
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FAQs
This model uses a straight backshell adaptor with a 1/3 bayonet coupling. Start by aligning the 55-contact interface with the mating plug, engage the bayonet lugs for a secure, quick-mating connection, and verify solder-cup terminations for each contact. Ensure the aluminium shell and cadmium finish are intact to maintain corrosion resistance in harsh environments.
Yes. The connector delivers with socket (female) solder cup contacts and a 55-contact layout. The 55 cavities (layout 55) support high-density wiring, making it suitable for compact cable harnesses in aerospace and industrial automation.
The unit is MIL-DTL-26482 SI qualified and operates from -40 °C to 125 °C, with REACH compliance. Its aluminium shell with cadmium plating provides corrosion resistance for harsh environments such as aerospace, defense, and outdoor industrial applications.
MIL-DTL-26482 SI qualification confirms military-spec, high-reliability performance. REACH compliance ensures regulatory adherence for chemical substances in many regions. Together they support long service life, reduced compliance risk, and suitability for global deployments in regulated industries.
The straight backshell adaptor simplifies alignment and mating, enabling faster field installations and easier maintenance. With the connector delivered as a complete solution, technicians can reduce assembly time and minimize the risk of incorrect orientation, which is crucial in dense harness environments.