MS3112E12-10P | 10-Pin MIL-DTL-26482 Series I Box Mount Receptacle (Size 12)
The MS3112E12-10P is a size 12 MIL-DTL-26482 Series I box mount receptacle with 10 pin contacts. Features “E” class environmental sealing and a rugged olive drab cadmium finish.
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MS3112E12-10P Optimization of Signal Density in Fixed Electronic Grids
The MS3112E12-10P is a high-precision interconnect solution specifically designed for specialized electronic grids that require a high concentration of signal channels within a minimal panel footprint. Utilizing the size 12 aluminum alloy shell, this box mount receptacle facilitates ten independent conductive paths through its 12-10 insert arrangement. This layout is highly valued in tactical communication systems and localized control units where ten Size 20 contacts provide the necessary capacity for multi-channel data telemetry. By offering a flush-mounted profile on equipment chassis, the MS3112E12-10P ensures a streamlined mechanical design while maintaining a high level of functional integration for complex digital interfaces.
Key Specifications
Shell Material | Voltage Rating | Current Rating | Operating Temp | Ingress Protection | Mating Cycles | Keying & Polarization | Coupling |
|---|---|---|---|---|---|---|---|
Aluminum alloy | ~1000 VAC | ~23 A | -65 °C to +200 °C | IP67 | 500 | N | quick bayonet coupling |

Tactical Environmental Defense and E-Class Sealing
The “E” class designation of the MS3112E12-10P signifies an environmentally resistant construction that incorporates an advanced interfacial seal and a rear wire-sealing grommet. This internal sealing grid is engineered to prevent the ingress of humidity, particulates, and chemical vapors, ensuring that the ten conductive channels remain isolated from harsh atmospheric contaminants. The aluminum housing is treated with olive drab cadmium plating over an electroless nickel underplate, providing a certified multi-layered defense against corrosion. This level of protection is essential for ground-based monitoring stations and maritime sensor grids where equipment is subject to constant moisture and salt air exposure.
Rapid Bayonet Coupling and Mechanical Integrity
As a MIL-DTL-26482 Series I component, the MS3112E12-10P utilizes a three-point bayonet coupling system that enables rapid and secure mating with a compatible plug. This design allows for a quick-disconnect interface that can be fully engaged or disengaged with only a partial turn of the coupling nut, providing tactile and audible confirmation of a verified lock. The bayonet mechanism is inherently resistant to self-decoupling even in high-vibration environments, making it a superior choice for vehicle-mounted telemetry systems and heavy-duty industrial machinery. This mechanical stability ensures constant electrical continuity for the ten conductive lines, even under harmonic stress.
Precision Pin Fidelity and 12-10 Layout Performance
Within the size 12 housing, the MS3112E12-10P employs ten Size 20 pin contacts, offering a reliable interface for a variety of digital and low-level analog signal sets. These pins are precision-machined from copper alloy and finished with high-grade gold plating to maintain a low-resistance electrical path throughout the equipment’s operational life. The gold plating protects the contact surfaces from oxidation and environmental degradation, ensuring signal purity for sensitive command loops. The high-performance dielectric insert provides exceptional insulation resistance between the ten channels, preventing electrical crosstalk and leakage in mission-critical command and communication grids.

Structural Robustness and Shielding Effectiveness
The mechanical reliability of the MS3112E12-10P is supported by its rigid aluminum shell and the standardized square flange mounting pattern. This configuration provides a solid mechanical bond between the receptacle and the equipment bulkhead, ensuring that the physical stresses of frequent mating cycles are not transferred to the internal electronics. Furthermore, the conductive nature of the cadmium-plated shell provides essential EMI and RFI shielding, protecting the ten signal lines from external electromagnetic interference. This combination of physical durability and electrical isolation makes the MS3112E12-10P a dependable choice for ruggedized digital environments where signal reliability is the highest priority.
FAQ
How many contacts are provided in the 12-10 layout?
How many contacts are provided in the 12-10 layout?
The 12-10 layout provides ten independent conductive channels using Size 20 pin contacts, offering one of the highest signal densities for a size 12 shell in the 26482 series.
What mounting style does the MS3112E12-10P use?
What mounting style does the MS3112E12-10P use?
This is a box mount receptacle featuring a four-hole square flange for permanent attachment to a flat panel, chassis, or bulkhead.
What does the "E" class rating signify?
What does the "E" class rating signify?
The “E” class signifies environmental resistance, meaning the connector includes internal seals and grommets to protect against moisture, dust, and other contaminants.
Is this receptacle compatible with other Series I plugs?
Is this receptacle compatible with other Series I plugs?
Yes, it is designed to mate with any MIL-DTL-26482 Series I plug of the same shell size (12) and layout (10), provided it utilizes the standard bayonet coupling system.
What finish is applied for corrosion resistance?
What finish is applied for corrosion resistance?
The shell features a standard olive drab cadmium finish over electroless nickel, providing excellent corrosion protection and shell-to-shell conductivity for EMI shielding.
Certification
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