2PM Russian GOST Standard Circular Connector 4-50 Pin Bayonet Lock

OHS Circular Connector

2PM Russian Standard (GOST) Industrial Connector

The 2PM series is a line of circular connectors engineered to meet Russian GOST standards, purpose-built for heavy-duty industrial, railway, military, and aerospace applications. Designed to thrive in extreme conditions, these connectors deliver consistent, uninterrupted performance even when faced with severe vibration, wide temperature swings, and moisture ingress. Whether for power transmission or critical signal connections, they offer a robust, compliant solution for projects requiring adherence to Russian technical specifications.

Key Selection Criteria

When evaluating the 2PM series for your application, consider these decision points:

• Pin Count and Configuration: Available from 4 to 50 pins in male or female gender, the series covers both power and signal transmission needs. Confirm the exact pin layout required for your mating interface.
• Locking Mechanism: Choose between a bayonet quick-lock (1/4 turn) for rapid, vibration-resistant connections, or a threaded lock for enhanced IP67/IP68 sealing in demanding conditions.
• Environmental Rating: The IP67 ingress protection rating supports outdoor, marine, and high-dust industrial settings, but verify the unmated protection level for your specific installation.
• Temperature Range: With an operating range of -40°C to +150°C, the connector suits applications with wide thermal swings, though the insulation material (PA66 or PBT) may influence the upper limit.
• Mating Cycles: Silver-plated contacts support over 500 mating cycles, making the series suitable for maintenance-intensive equipment where repeated connection is expected.

Construction and Materials

The 2PM series uses an aluminum alloy housing with a nickel-plated finish for corrosion resistance in harsh outdoor and industrial environments. The insulator is manufactured from PA66 or PBT thermoplastic, providing stable electrical performance and UL94 V-0 flame retardancy. Contacts are brass plated with silver, ensuring low-resistance connectivity and long-term reliability.

Application Scope

The 2PM series is suited for environments where vibration, temperature extremes, and moisture are present. Typical applications include:

• Railway and rolling stock systems
• Military and aerospace equipment
• Industrial automation and robotics
• Outdoor power distribution networks
• Marine and offshore installations
• Heavy machinery and construction equipment

Suitability Boundaries

While the 2PM series is robust, it is not intended for every scenario. The connector is not designed for submersion beyond its IP67 rating while mated, and the unmated protection level should be confirmed for your application. For projects requiring continuous submersion or higher ingress protection, verify whether the threaded locking option with IP68 sealing meets your specification. The series is engineered for GOST compliance; for non-Russian standards, confirm the applicable certification requirements separately.

Quality and Reliability Evidence

The 2PM series is designed for long operational lifespan, minimizing maintenance and downtime. The rugged aluminum alloy housing and silver-plated contacts are selected for durability in demanding environments. The bayonet quick-lock mechanism provides a secure, vibration-resistant connection, while the threaded option offers enhanced sealing for the most challenging conditions.

Customization Options

Tailored pin configurations and plating finishes are available to meet specific project requirements. For OEM and aftermarket applications, engineering assistance is provided to confirm the correct mating interface, pinout, and cable range. When requesting a quote, include the following information:

• Required pin count and gender (male/female)
• Locking mechanism preference (bayonet or threaded)
• Cable diameter and termination type
• Operating temperature and environmental conditions
• Applicable standards or certifications

For related Russian standard connector options, review the OHS Circular Connector series. For applications requiring higher pin density, the 12G Series Circular Connectors may be relevant.