FQ Series 4 Pin Waterproof Circular Plug Connector – Shell Size 24
Product Overview
The FQ Series 4 Pin Waterproof Circular Plug Connector is designed for dependable power transmission and electrical interconnection in industrial equipment operating under demanding environmental conditions. Manufactured in accordance with the DZ4Q/RE008-84 standard, the FQ series features an upgraded sealing structure that enhances environmental protection while maintaining stable electrical performance.
With a compact shell size, a secure bayonet locking mechanism, and high-conductivity gold-plated contacts, this connector is suitable for equipment requiring fast installation, reliable operation, and long service life. Its rugged aluminum alloy housing and precision contact design make it an ideal choice for industrial automation, outdoor electrical systems, and power distribution applications.
Key Features
-- IP67-rated sealing helps protect the connector from dust ingress and temporary water exposure when properly assembled.
-- Bayonet locking mechanism enables quick connection and secure fastening, reducing installation time.
-- Gold-plated copper contacts provide stable conductivity and help minimize contact resistance.
-- Squirrel-cage elastic contact structure maintains consistent contact pressure and improves resistance to vibration and mechanical shock.
-- Aluminum alloy shell with anodized surface treatment offers excellent corrosion resistance and structural durability.
-- Rated for up to 500 mating cycles, supporting repeated connection and maintenance operations.
Working Principle
The connector transfers electrical power through precision-engineered contact pins securely positioned inside the insulated housing. When the plug is inserted into the matching receptacle and locked using the bayonet coupling system, the elastic contact structure maintains stable contact pressure for reliable electrical continuity. The integrated sealing components help protect the internal contacts from moisture, dust, and external contaminants within the specified protection level.
Typical Applications
-- Industrial automation equipment
-- Power supply and distribution systems
-- Electrical control cabinets
-- Outdoor electrical installations
-- Communication equipment
-- Process control systems
-- Construction machinery
-- Transportation electrical equipment
Technical Specifications
| Item |
Specification |
| Connector Type |
Plug |
| Shell Size |
24 |
| Number of Positions |
4 Pin |
| Contact Size |
4 × Φ2.5 mm |
| Connection Method |
Bayonet Connection |
| Terminal Method |
Solder |
| Rated Current |
25A |
| Rated Voltage |
400V |
| Contact Resistance |
≤1mΩ |
| Contact Material |
Copper, Gold Plated |
| Insulator Material |
PBT |
| Shell Material |
Aluminum Alloy, Anodized Surface |
| Operating Temperature |
-55°C to +100°C |
| Relative Humidity |
Up to 98 ± 3% at 40°C |
| Atmospheric Pressure |
1 kPa |
| Vibration Resistance |
10–200 Hz, 150 m/s² |
| Protection Rating |
IP67 |
| Mating Durability |
500 Cycles |
Product Advantages
-- Compact 4-pin configuration suitable for power connection applications.
-- High-current 25A rating supports stable electrical transmission.
-- Reliable bayonet locking mechanism improves operational efficiency.
-- Durable anodized aluminum housing enhances resistance to corrosion and mechanical wear.
-- Stable contact structure supports consistent electrical performance during repeated use.
Manufacturing Process
The housing is manufactured from high-strength aluminum alloy using precision machining and finished with an anodized surface treatment to improve durability and corrosion resistance. The contacts are made from high-conductivity copper with gold plating to enhance electrical performance and wear resistance. Each connector undergoes routine inspections for dimensional accuracy, contact quality, and assembly consistency before shipment.
Service Support
-- OEM and customized connector solutions
-- Technical consultation for connector selection
-- Sample orders available for testing and evaluation
-- Stable production capacity for volume orders
-- Standard export packaging
-- Responsive after-sales support
FAQ
Q1: What is the advantage of the bayonet connection system?
A: The bayonet coupling mechanism enables quick installation while helping maintain a secure mechanical connection during operation, making maintenance more efficient.
Q2: Is this connector suitable for outdoor environments?
A: Yes. When correctly assembled, its IP67 protection rating helps protect against dust ingress and temporary water exposure in industrial and outdoor applications.
Q3: Why are gold-plated contacts used?
A: Gold-plated contacts help improve electrical conductivity, reduce contact resistance, and maintain stable connection performance during repeated mating cycles.
Q4: Do you provide customized connector solutions?
A: Yes. We offer customized connector configurations, cable assembly services, and OEM solutions based on specific application and project requirements.
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