PT06E22-55S(SR) | 55-Socket MIL-DTL-26482 Series I Plug with Strain Relief (Size 22)
The PT06E22-55S(SR) is a size 22 MIL-DTL-26482 Series I straight plug with 55 socket contacts and an integrated strain relief (SR) clamp. Features “E” class environmental sealing.
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- 100% Intermateable with original parts.
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PT06E22-55S(SR) Efficiency of Massive Signal Consolidation in Mobile Grids
The PT06E22-55S(SR) is a high-precision interconnect solution specifically designed for specialized electronic grids that require an extensive concentration of signal paths within a portable, high-capacity interface. Utilizing the size 22 aluminum alloy shell, this straight plug facilitates fifty-five independent conductive paths through its high-density 22-55 insert arrangement. This layout is a critical asset for modern mobile mission computers, centralized flight test instrumentation, and large-scale automated control systems where fifty-five Size 20 socket contacts provide the necessary capacity for vast data telemetry. By offering a lightweight yet durable housing, the PT06E22-55S(SR) ensures a streamlined mechanical design while maintaining a superior level of functional integration for advanced 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 Protection
The “E” class designation of the PT06E22-55S(SR) signifies a superior environmental construction that incorporates an advanced interfacial seal and a high-performance dielectric insert. This internal sealing grid is engineered to prevent the ingress of humidity, fine particulates, and chemical vapors, ensuring that the fifty-five 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 field-deployed command centers and maritime sensor grids where equipment is subject to constant outdoor exposure and high-humidity operational zones.
Integrated Strain Relief and Mechanical Stress Management
A defining technical feature of the PT06E22-55S(SR) is the inclusion of the (SR) strain relief cable clamp backshell, which is essential for managing the significant weight and volume of a 55-conductor cable bundle. In environments where cables are subject to accidental pulling, twisting, or vibration, this mechanism absorbs physical tension by securing the cable jacket firmly to the connector body. This ensures that the mechanical load is not transferred to the fifty-five delicate solder or crimp joints at the socket interface, significantly reducing the risk of fatigue-related failures. For large-scale mobile industrial machinery and tactical communication arrays, the structural security provided by the SR backshell is a vital factor in maintaining consistent system uptime.
Precision Socket Fidelity and 22-55 Layout Performance
Within the size 22 housing, the PT06E22-55S(SR) employs fifty-five Size 20 socket contacts, offering a reliable female interface for a vast array of digital and low-level analog signal sets. These sockets are precision-machined from copper alloy and finished with high-grade gold plating to maintain an ultra-low-resistance electrical path throughout the equipment’s lifespan. The socket design provides inherent electrical safety, as the conductive elements are recessed within the dielectric insert, preventing accidental short-circuits during the mating process. The high-performance dielectric insert provides exceptional insulation resistance between the fifty-five channels, preventing electrical crosstalk and leakage in mission-critical command and communication grids.

Rapid Bayonet Coupling and EMI Shielding Effectiveness
The PT06E22-55S(SR) utilizes a three-point bayonet coupling system, allowing for rapid and secure mating with a simple partial turn of the coupling nut. This mechanical interface provides tactile and audible confirmation that the connection is fully locked, which is essential for rapid assembly in high-stress or low-visibility field conditions. Furthermore, the conductive nature of the cadmium-plated aluminum shell provides essential EMI and RFI shielding, protecting the fifty-five signal lines from external electromagnetic interference. This combination of physical durability, mechanical cable protection, and electrical isolation makes the PT06E22-55S(SR) a dependable choice for ruggedized mobile environments where signal integrity and structural stability are paramount.
FAQ
How many signal channels does the PT06E22-55S(SR) support?
How many signal channels does the PT06E22-55S(SR) support?
The 22-55 layout supports fifty-five independent conductive channels using Size 20 socket contacts, providing the highest signal density for the size 22 shell in the PT series.
What is the benefit of the (SR) backshell on this large connector?
What is the benefit of the (SR) backshell on this large connector?
The (SR) strain relief backshell is critical for large connectors because it prevents the weight and tension of heavy 55-core cables from damaging the internal contact terminations.
Is this plug intermateable with other MIL-DTL-26482 Series I connectors?
Is this plug intermateable with other MIL-DTL-26482 Series I connectors?
Yes, it is designed to mate with any MIL-DTL-26482 Series I pin receptacle (such as PT00, PT02, or MS3112) of the same shell size (22) and layout (55).
What type of finish is used for the PT06E22-55S(SR)?
What type of finish is used for the PT06E22-55S(SR)?
The standard finish is olive drab cadmium over electroless nickel, which offers superior corrosion resistance in salt-spray environments and ensures shell-to-shell conductivity for shielding.
Why are socket contacts used in this plug instead of pins?
Why are socket contacts used in this plug instead of pins?
Socket contacts provide a “dead-face” safety feature where the conductive elements are recessed, protecting them from damage and preventing accidental electrical shorts when the plug is unmated.
Certification
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