KAIPU FS1 Series IP67 Waterproof Threaded Circular Connector Supports Reliable Shielded Electrical Connections for Industrial and Outdoor Applications

The Growing Importance of Waterproof Shielded Threaded Circular Connectors in Modern Electrical Applications

With the continuous development of industrial control systems, communication networks and outdoor electronic equipment, reliable waterproof and EMI-shielded electrical connection solutions have become increasingly important. The waterproof shielded circular connector plays an essential role in providing stable power transmission, signal connection, and secure coupling for harsh-environment applications. Due to its robust structure, reliable threaded coupling design, IP67 ingress protection and excellent electromagnetic shielding performance, waterproof threaded circular connectors are widely used in industrial control equipment, data processing systems, medical and testing instruments, communication network devices, and outdoor or marine equipment.

Hangzhou Kaipu Electronic Technique Co.,Ltd. focuses on the development and production of standardized connector products, providing reliable connection solutions with consistent quality and stable performance. Through standardized manufacturing processes and serialized product development, Kaipu offers connector products designed to satisfy diverse electrical connection requirements for global customers.

The FS1 series waterproof circular electrical connectors adopt copper alloy housing with nickel plating, reliable threaded coupling structure, IP67 waterproof rating and integrated EMI shielding. Equipped with gold-plated copper alloy contacts and high-performance insulation, they deliver dependable electrical connections for industrial, communication and outdoor applications. This series is fully interchangeable with Amphenol C091 series and Binder 423 series, and complies with DIN 45326 and IEC 60130-9 international standards.

FS1 Series Circular Connector Improves Connection Reliability with Threaded Coupling and IP67 Protection

The performance of electrical connectors directly affects the stability and service life of electrical and electronic equipment. For equipment operating in outdoor, marine, high-humidity and vibration-prone environments, reliable contact performance, waterproof sealing and secure coupling are critical factors.

The FS1 series waterproof circular connectors adopt reliable threaded coupling structure, with contact resistance ≤3mΩ and stable contact performance. These characteristics help maintain stable electrical connections, reduce signal loss and electromagnetic interference, and support long service life during continuous equipment operation, even in demanding working conditions.

The FS1 series is interchangeable with Amphenol C091 series and Binder 423 series connectors, and supports multiple termination options including solder type, crimp type and PCB type. Contact configurations range from 3 to 8 cores, offering high flexibility for different equipment and system integration.

Product Features of FS1 Series Circular Connectors

IP67 Waterproof Design and International Certification

Waterproof performance and environmental adaptability are core indicators for connectors used in outdoor and industrial scenarios. The FS1 series circular connector uses copper alloy housing with nickel plating for excellent EMI shielding, and achieves IP67 ingress protection rating, ensuring dustproof performance and protection against temporary immersion in water.

FS1 series is UL, CE and RoHS certified waterproof circular connector. It works reliably within operating temperature range of -55°C ~ +85°C, withstands vibration (10~1000Hz, 196m/s²) and shock (490m/s²), with mechanical service life reaching 1000 mating cycles, ensuring long-term reliable service in harsh outdoor and industrial environments.

Threaded Coupling and Flexible Contact & Termination Options

Different electrical systems require diversified connection structures and termination methods for power and signal transmission. The FS1 series features threaded coupling for secure locking and reliable sealing. Contacts are gold-plated copper alloy with 1.5mm contact diameter, rated current 5A and rated voltage 60-250V AC. Available contact counts include 3, 4, 5, 6, 7, 8 positions to satisfy various circuit connection demands.

Multiple termination options including solder, crimp and PCB are available to match different assembly requirements. Standard cable plugs and panel-mount receptacles are provided, with interchangeable pin and socket configurations according to customer needs.

KAIPU FS1-3TJ/3Z1K Waterproof Circular Connector

The KAIPU FS1-3TJ/3Z1K waterproof circular connector is a 3-core mating set, consisting of a straight cable plug (FS1-3TJ) and a panel-mount receptacle (FS1-3Z1K). With threaded coupling, gold-plated contacts and IP67 sealing, it delivers contact resistance ≤3mΩ at 5A / 250V rating. This 3-core connector is suitable for low-power signal and power transmission in industrial control and small equipment interfaces.

KAIPU FS1-4TJ/4Z1K Waterproof Circular Connector

The KAIPU FS1-4TJ/4Z1K waterproof circular connector is a 4-core mating solution, including straight cable plug and panel receptacle. It maintains stable electrical performance under vibration and high-humidity conditions, with IP67 waterproof protection and EMI shielding. It is widely used in data processing equipment, testing instruments and 3G/4G/5G communication network devices.

Wide Application Compatibility of FS1 Series Circular Connectors

The application range of the FS1 series waterproof shielded circular connectors continues to expand as industries require more reliable, waterproof and anti-interference connection components. These connectors are widely used in industrial control equipment, data processing systems, testing and medical instruments, communication and network equipment (including 3G/4G/5G networks), as well as outdoor and marine equipment.

For power supply and signal transmission applications in harsh environments, waterproof and EMI-shielded connectors are essential for maintaining long-term stable equipment operation. The FS1 series supports multiple contact counts and termination options, providing practical solutions for equipment interfaces, signal transmission and power input in industrial, communication and outdoor settings.

The threaded coupling mechanism of the FS1 series also helps ensure secure locking and stable connections in vibration-prone environments. This design improves installation convenience while maintaining reliable waterproof and shielding performance during continuous equipment operation.

FS1 Series Circular Connectors Promote Efficient Equipment Development

With continuous advancement of electrical and electronic equipment technology, market demand for cost-effective, IP67 waterproof and EMI-shielded circular connectors keeps growing. The FS1 series waterproof circular connector helps improve equipment stability, simplify installation and maintenance, and support efficient operation in different environments.

Featuring threaded coupling, nickel-plated copper alloy housing, IP67 waterproof protection, EMI shielding, low contact resistance, gold-plated copper alloy contacts, UL/CE/RoHS compliance, and interchangeability with Amphenol C091 and Binder 423 series, the FS1 series provides a reliable and cost-effective waterproof connection solution for various electrical and electronic devices.

Through continuous improvement of manufacturing processes and quality control, Hangzhou Kaipu Electronic Technique Co.,Ltd. continues to provide standardized connector solutions for global applications. With reliable sealing structure, excellent shielding performance and stable electrical characteristics, FS1 series circular connectors will continue to play an important role in modern waterproof electrical connection systems.