MS3112E22-55S Equivalent & Substitute Parts

Part Overview

The MS3112E22-55S is a 55-position circular connector receptacle manufactured by Amphenol Industrial Operations, conforming to MIL-DTL-26482 Series I specifications. This panel-mount receptacle features female sockets with solder cup termination and bayonet lock fastening, designed for aerospace, industrial, instrumentation, mass transit, and military applications. The connector is currently in active production status with 809 units in stock.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same connector category, enabling component interchangeability in applications where the primary part becomes unavailable or when alternative sourcing is required.

Substiute Parts

MS3112E22-55S

Amphenol Industrial OperationsIn Stock: 858MS3112E22-55S Datasheet

Current PartRFQ

MSW02E22-55S

Milspecwest, LLCIn Stock: 1225MSW02E22-55S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The MSW02E22-55S qualifies as a substitute for the MS3112E22-55S based on the following critical parameters:

• Connector Type & Position Count: Both are 55-position receptacles with female sockets
• Shell Size: Identical 22-55 shell size and insert configuration
• Mounting Configuration: Both feature panel mount with flange mounting
• Termination Method: Both use solder cup termination
• Fastening Mechanism: Both employ bayonet lock fastening
• Current & Voltage Ratings: Both rated for 7.5A continuous current
• Operating Temperature: Identical -55°C to 125°C range
• Environmental Sealing: Both provide environment-resistant ingress protection

These parameters define the mechanical and electrical interchangeability envelope for this connector category.

Parameter Comparison

Engineering Selection Recommendations

Both the MS3112E22-55S and MSW02E22-55S maintain active production status and share identical mechanical and electrical specifications for the critical parameters governing connector interchangeability. The MS3112E22-55S conforms to MIL-DTL-26482 Series I specifications with Amphenol as the original manufacturer. The MSW02E22-55S is classified as a 26482 Style Connector from Milspecwest.

The MSW02E22-55S carries RoHS non-compliant status and undefined REACH compliance, whereas the MS3112E22-55S does not specify these compliance states in the provided data. Selection between these parts should account for application-specific compliance requirements and supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can the MSW02E22-55S directly replace the MS3112E22-55S in existing assemblies?

A: Yes, from a mechanical and electrical standpoint. Both connectors share identical position count (55), shell size (22-55), mounting configuration (panel mount with flange), termination method (solder cup), and fastening type (bayonet lock). Current and temperature ratings are equivalent. Compliance requirements must be evaluated separately based on application specifications.

Q: What is the difference in voltage rating between these two parts?

A: The MS3112E22-55S is rated for 600VAC, while the MSW02E22-55S is rated for 800V. Both exceed typical industrial and military application requirements. Selection should be based on the specific voltage environment of the application.

Q: Are there differences in shell finish or contact plating?

A: The MS3112E22-55S features olive drab chromate over cadmium shell finish with gold mating contact finish. The MSW02E22-55S specifies cadmium shell finish with cadmium contact finish. These differences may affect corrosion resistance and contact performance in specific environmental conditions.

Q: What does "Environment Resistant" ingress protection mean?

A: Both connectors provide environment-resistant sealing, protecting internal contacts from moisture, dust, and contaminants during normal operation and storage. This classification is standard for military-grade circular connectors in this category.

Q: Which part should be selected for new designs?

A: Selection should be based on compliance requirements, supply availability, and application environment. The MS3112E22-55S offers established MIL-DTL-26482 Series I compliance from a primary manufacturer. The MSW02E22-55S provides alternative sourcing with higher current inventory levels.