YGD Series Circular Power Connectors

YGD Series Circular Power Connectors

When you need a reliable connection solution for critical high‑power and harsh‑environment applications, the YGD Series Circular Power Connector stands out as the industry’s most robust choice. Our advanced connector series combines high-current carrying capacity with exceptional shock and vibration resistance, making it perfect for military vehicles, heavy industry, radar systems, and high-power equipment. With a proven track record in meeting strict military standards (GJB5371-2005), Xi'an Mingxi Taida Information Technology Co., Ltd. delivers proven solutions that meet the most demanding requirements for high-current, long-duration, and extreme-environment equipment installations.

Product Descriptions from the Supplier

As an authorized partner of JONHON, MXTD is proud to present the YGD Series Circular Power Connectors—the high-current interconnection solution engineered for the most demanding military, industrial, and heavy-duty power applications. Designed to exceed the benchmarks set by GJB598 (MIL-C-26482), this series expands the envelope with larger 28# and 32# shell sizes and ultra-high-current 0# contacts, filling the gap for heavy-power connection needs in rugged environments.

Crafted to meet the stringent requirements of GJB5371-2005, the YGD Series features a robust bayonet lock mechanism for rapid mating under field conditions and crown spring sockets paired with solder-terminated pins, ensuring unwavering electrical contact even under extreme shock and vibration. With a sealing performance that withstands 1.8m water immersion for 48 hours and a wide operating temperature range of -55°C to 125°C, these connectors deliver exceptional reliability in wet, dusty, or high-vibration scenarios.

Backed by MXTD’s deep expertise in power interconnection systems and global supply chain, we provide end-to-end solutions for the YGD Series, including customized contact configurations and cable assemblies. Every unit undergoes rigorous environmental and electrical testing to ensure compliance with military standards, making it the trusted choice for your high-current power connection projects.

Description

The YGD Series Circular Power Connectors are military-grade power interconnection components designed to deliver robust, high-amperage performance in the most challenging operating environments. Developed in accordance with GJB5371-2005 and optimized to complement the GJB598 (MIL-C-26482) series, the YGD Series addresses the critical need for larger, more powerful connectors by introducing 28# and 32# shell sizes and heavy-duty contacts (ranging from 20# up to 0#), supporting rated currents from 7.5A to an impressive 150A.

At its core, the YGD Series utilizes a bayonet connection system that enables quick, quarter-turn mating—ideal for applications where speed and security are paramount, such as field-deployed military equipment or industrial power systems. The contact system features crown spring sockets mated with solder-terminated pins, a design that ensures low contact resistance, high current-carrying capacity, and resistance to fretting corrosion even under severe mechanical stress (196m/s² vibration, 980m/s² shock).

Engineered for environmental resilience, the YGD Series boasts exceptional sealing capabilities: sockets maintain airtight integrity under 2×10⁵Pa pressure for 1 minute, and mated connectors withstand 1.8m water immersion for 48 hours. With a wide operating temperature range (-55°C to 125°C), 96-hour salt spray resistance (N/R/B classes), and insulation resistance exceeding 5000 MΩ, these connectors thrive in extreme conditions from arctic cold to desert heat, and from coastal saltwater to industrial humidity.

Available with multiple cable installation forms and compatible with a wide range of contact hole arrangement codes, the YGD Series offers unparalleled flexibility for high-current power distribution in military vehicles, industrial machinery, renewable energy systems, and heavy-duty test equipment.

Specifications

Core Standards

• Military Standard: GJB5371-2005
• Enterprise Standard: Q/21EJ679
• Reference Standard: GJB598 (Equivalent to MIL-C-26482)
• Insulation Resistance: ≥5000 MΩ (Normal); ≥100 MΩ (Damp Heat)

Applications

The YGD Series marine corrosion-resistant electrical connectors are designed for a wide range of demanding applications, including:

• Military & Defense: Armored vehicles, radar systems, missile launchers, field power distribution units
• Heavy Industry: Industrial machinery, power generation equipment, welding systems, heavy-duty robotics
• Renewable Energy: Wind turbine power converters, solar farm combiner boxes, energy storage systems
• Marine Engineering: Shipboard power distribution, offshore platform heavy-power equipment
• Test & Measurement: High-current test benches, power supply units, battery testing systems
• Aerospace Ground Support: Aircraft ground power units (GPU), missile maintenance equipment

Functionality

• Bayonet Quick Connection: Quarter-turn mating for fast, secure engagement in field and industrial settings.
• High-Current Conductivity: Crown spring socket design ensures low resistance and stable power delivery up to 150A.
• Environmental Sealing: Waterproof (1.8m/48h) and airtight performance protects against moisture and contaminants.
• Shock & Vibration Resistance: Maintains connectivity under extreme mechanical stress (196m/s² vibration, 980m/s² shock).
• Wide Voltage Compatibility: Supports 300V and 1000V rated voltage classes for diverse power systems.
• Flexible Installation: Multiple cable installation forms adapt to different equipment and wiring requirements.

Key Features​​​​​​​

• Military-Grade Compliance: Built to GJB5371-2005, exceeding the performance of standard MIL-C-26482 connectors.
• Expanded Power Range: 28#/32# shells and 0# contacts support up to 150A for heavy-power applications.
• Robust Contact System: Crown spring sockets deliver superior contact stability and resistance to fretting corrosion.
• Exceptional Sealing: 1.8m waterproof rating and airtight socket design for harsh environment reliability.
• Wide Environmental Tolerance: Operates from -55°C to 125°C with 96h salt spray resistance for extreme conditions.
• Low Contact Resistance: Minimal power loss with post-life test resistance as low as 0.17mΩ (0# contact).

Custom Design

MXTD offers tailored customization for the YGD Series to meet your unique high-current application needs:

• Contact Configuration: Custom combinations of high/low current contacts (7.5A–150A) for hybrid power/signal systems.
• Housing Modifications: Custom shell materials (stainless steel), plating options, or color coding for system identification.
• Sealing Upgrades: Fluororubber sealing components for enhanced chemical resistance or extreme temperature tolerance.
• Cable Assembly: Pre-assembled high-current cable connectors with custom wire gauges, terminations, and shielding.
• Mounting Adaptations: Custom flange mounts, bulkhead fittings, or cable glands for non-standard installation scenarios.
• Tailor-Made Terminations: Custom solder cup dimensions or crimp termination options for specialized wiring systems.

Contact us today to discuss your custom design needs and let us help you find the perfect connector solution for your application.

Why Choose MXTD

When you choose MXTD for your marine electrical connector needs, you're choosing a partner dedicated to quality, reliability, and innovation. Here's why we stand out:

• Authorized JONHON Distributor: 100% genuine YGD Series connectors, fully compliant with GJB5371-2005 military standards.
• High-Current Expertise: Our engineering team specializes in power interconnection solutions, providing precise product matching.
• Rigorous Qualification Testing: Every batch undergoes vibration, waterproof, and electrical performance testing to ensure reliability.
• Customization Speed: Rapid response to custom design requests for tight-deadline military and industrial projects.
• Global Logistics Network: Efficient delivery to defense contractors, manufacturers, and test facilities worldwide.
• Lifetime Technical Support: 24/7 assistance for installation, maintenance, and troubleshooting of high-current systems.

FAQ

Q: What military standard does the YGD Series comply with?

A: The YGD Series strictly complies with the national military standard GJB5371-2005 and enterprise standard Q/21EJ679.

Q: What is the maximum current rating of the YGD Series?

A: The 0# contact size supports a rated current of 150A, making it ideal for heavy-power applications.

Q: What is the waterproof performance of the YGD Series?

A: After mating, the connectors can withstand 1.8 meters of water immersion for 48 hours without water ingress.

Q: What is the mechanical life of these connectors?

A: The YGD Series is rated for 500 mating cycles, meeting the durability requirements of military and industrial use.

Q: What is the difference between YGD and GJB598 (MIL-C-26482) connectors?

A: The YGD Series expands on GJB598 by adding 28#, 32# shell sizes and larger 0# contacts for higher current capacity.

Q: What termination method is used for the YGD Series contacts?

A: The contact pins use solder termination, and the sockets are crown spring type for stable electrical connection.

Q: Can I get custom cable assemblies for the YGD Series?

A: Yes, MXTD provides fully customized high-current cable assemblies tailored to your specific length and wiring requirements.

Contact Us

Ready to discuss your connector requirements? Our technical team is here to help you find the perfect solution for your application.

When you choose our YGD Series Circular Power Connectors, you're investing in proven technology backed by comprehensive support. Contact us today to learn how we can enhance your next project.

Email: manager02@mxtdinfo.com