XCD Series Power Circular Electrical Connector

XCD Series Power Circular Electrical Connector | High-Current 5A to 300A Supply Solutions

The XCD Series represents our specialized solution for high-current power distribution in demanding military and industrial environments. Covering a broad spectrum from 5A to 300A (with select contacts up to 400A), these connectors leverage proven hyperboloid wire spring socket technology to deliver low contact resistance, smooth mating, and exceptional durability. Whether you need to power heavy machinery, military vehicles, or renewable energy systems, the XCD Series provides the reliability and flexibility required for mission-critical power connections. Each connector is designed to withstand extreme temperatures, vibration, shock, and corrosive atmospheres, ensuring uninterrupted power transfer in the world’s harshest conditions.

Description

The XCD Series Power Circular Electrical Connector is a robust interconnect solution purpose-built for high-current power transmission across a wide range of applications. Available in both high-strength aluminum alloy and stainless steel shell options, these connectors combine mechanical ruggedness with advanced contact technology. The hyperboloid wire spring sockets create multiple line contact points, significantly reducing contact resistance and insertion force while maintaining consistent performance over thousands of mating cycles. With contact sizes ranging from φ1.0mm (5A) to φ14mm (400A), the XCD Series offers unparalleled scalability for power system designers. The five-key polarization system ensures error-free mating in complex installations, while the availability of both pin and socket configurations in either half provides maximum design flexibility. Every XCD connector is sealed against moisture, salt spray, fungal growth, and particulate ingress, making it suitable for deployment in naval, ground, airborne, and industrial environments where reliable power is non-negotiable.

Specifications

Applications

• Military Ground Vehicles: Power distribution for communication systems, weapon platforms, and auxiliary equipment.
• Naval Vessels: High-current connections for propulsion control, radar, and onboard power networks.
• Aerospace & Aviation: Ground support equipment, test stands, and aircraft power systems.
• Industrial Automation: Heavy machinery, robotic arms, and factory power distribution.
• Renewable Energy: Solar inverters, wind turbine controls, and energy storage systems.
• Rail Transportation: Locomotive power systems, signaling equipment, and passenger amenities.
• Oil & Gas: Drilling rigs, subsea equipment, and remote monitoring stations.

Functionality

• Hyperboloid Wire Spring Socket: Provides multiple contact points for low resistance and smooth mating, even after repeated cycles.
• Five-Key Polarization System: Eliminates mismating in multi-connector panels with five distinct keyway positions.
• Flexible Gender Options: Plugs and receptacles can be ordered with either pins or sockets, simplifying inventory and design.
• Multiple Termination Styles: Choose from various rear-end configurations to match your cable assembly requirements.
• Wide Contact Range: From 5A signal-level contacts to 400A power contacts, all in a single connector family.
• Environmental Sealing: Built-in gaskets and sealing materials protect against moisture, salt, and particulate ingress.

Key Features

• Broad Current Coverage: One connector family handles everything from 5A control circuits to 400A main power feeds.
• Proven Hyperboloid Technology: Field-tested contact design ensures low resistance and long-term reliability.
• Dual Shell Material Options: Aluminum alloy for weight-sensitive applications; stainless steel for maximum corrosion resistance.
• Harsh Environment Qualification: Tested to military standards for vibration, shock, temperature, and humidity.
• Five-Key Polarization: Prevents costly miswiring and equipment damage.
• Gender-Neutral Design: Both halves available with pins or sockets, offering unmatched design flexibility.
• Global Standards Compliance: Manufactured under enterprise standard 21E0.204.086JT, with materials and performance meeting international expectations.

Custom Design

The XCD Series platform is highly adaptable to meet specialized power distribution requirements:

• Mixed Contact Arrangements: Combine power and signal contacts in a single shell to reduce panel space.
• Custom Plating: Specify enhanced finishes for extreme marine, chemical, or high-altitude environments.
• Special Termination Styles: Develop unique rear-end configurations for specific cable types or assembly methods.
• Keying Customization: Design unique polarization schemes for complex multi-connector systems.
• Cable Assembly Integration: Complete custom harness solutions with overmolding, strain relief, and labeling.
• High-Current Variants: For currents beyond 400A, contact our engineering team for custom contact development.

Why Select MXTD

At MXTD, we specialize in high-reliability interconnect solutions that power the world's most demanding applications. With decades of cumulative experience in circular connector design and manufacturing, we understand the critical nature of power connections in defense, aerospace, and industrial systems. The XCD Series embodies our commitment to engineering excellence—combining proven hyperboloid contact technology with rugged mechanical construction to deliver unwavering performance under extreme conditions. Every XCD connector is manufactured under strict quality controls per enterprise standard 21E0.204.086JT, ensuring batch-to-batch consistency and long-term reliability. When you partner with MXTD, you gain access to a team of technical experts dedicated to helping you select or design the optimal power interconnect solution for your unique requirements.

FAQ

Q: What current ranges are available in the XCD Series?
A: The XCD Series offers contact sizes covering 5A to 400A, with specific ratings listed in the specifications table. For currents exceeding 400A, custom solutions may be available—please consult our engineering team.

Q: What is a hyperboloid wire spring socket, and why is it beneficial?
A: A hyperboloid socket uses multiple wires arranged in a hyperbolic pattern to create numerous line contact points with the mating pin. This design results in lower contact resistance, reduced insertion/extraction forces, and significantly longer mechanical life compared to conventional stamped or machined sockets.

Q: Can I use the same connector for both power and signal circuits?
A: Yes. The XCD Series allows mixed contact arrangements within a single shell, enabling you to combine power contacts (e.g., φ5.5 for 150A) with signal contacts (e.g., φ1.0 for 5A) in one connector, saving space and simplifying cabling.

Q: What termination options are available?
A: The XCD Series supports multiple rear-end termination styles, including crimp, solder, and PCB mount. Custom terminations can also be developed for specific applications.

Q: How does the five-key polarization work?
A: The connector shell is available with five different keyway positions. By selecting matching key positions on plug and receptacle, you can prevent connectors of the same shell size but different circuits from being mated incorrectly, protecting sensitive equipment.

Q: What shell materials and platings are offered?
A: Standard shell materials include high-strength aluminum alloy and stainless steel. Plating options include zinc olive drab passivation, electroless nickel, black anodizing (non-shielded), and stainless steel passivation for maximum corrosion resistance.

Q: Is the XCD Series suitable for outdoor use?
A: Absolutely. The XCD Series is designed to withstand moisture, salt spray, fungal growth, rain, sand, and dust, making it ideal for outdoor deployment in naval, coastal, and desert environments.

Q: What is the mechanical life of these connectors?
A: The XCD Series is rated for 1,000 mating cycles minimum, with contact resistance remaining within specified limits throughout its life.

Contact Us

Ready to power your most demanding applications with our XCD Series high-current circular connectors? Our technical experts are standing by to discuss your specific power requirements and recommend the optimal configuration for your project. Whether you need standard units for immediate deployment or custom-designed high-power solutions for specialized systems, we're here to help you achieve your performance objectives.

Reach out to our team today: manager04@mxtdinfo.com

Let us show you how our XCD Series power connectors can deliver reliable, high-current performance in even the harshest environments, ensuring your systems stay online and operational.