Description Product Catalog Solution Quality Control Reviews

ST Series Push Pull Circular Connector

>Number Of CoresNumber Of Cores 4 Pin
Contact DiameterContact Diameter(mm) 0.6mm/1.0mm/1.6mm
IP RatingIP Rating IP68
Shell MaterialShell Material Brass Chrome Plated
Temperature RangeTemperature Range -20℃ ~ +85℃
TerminationTermination Welding Cable
Rated CurrentRated Current(A) 5A/10A
Rated VoltageRated Voltage(Ac.V) 125V/200V/250V
Test VoltageTest Voltage(Ac.V)1Min 1500V
Insulation ResistanceInsulation Resistance (MΩ) ≥1000MΩ
Contact ResistanceContact Resistance (MΩ) ≤10MΩ
CertificationCertification CE,ISO9001, RoHS
Get Quote

The ST Series push pull circular connector is a high-performance industrial connector designed for stable power and signal transmission in demanding environments. With a brass chrome plated housing, this connector offers excellent mechanical strength, corrosion resistance, and long-term durability.

Its push pull self-locking mechanism allows fast connection and secure locking without the need for additional tools. Once inserted, the connector locks automatically and can be easily released by pulling the outer sleeve. This design ensures reliable operation even in vibration-intensive applications.

The ST connector series is widely used in industrial automation, test equipment, communication systems, medical devices, and outdoor electronic equipment, where reliable electrical connection and easy operation are essential.
ST连接器.jpg

Durable Brass Chrome Plated Housing

One of the main advantages of the ST series connector is its brass chrome plated shell. Brass provides excellent electrical conductivity and mechanical strength, while the chrome plating layer enhances surface hardness and corrosion resistance.

This material combination offers several key benefits:


  • Strong resistance to wear and oxidation

  • High durability in harsh environments

  • Long service life under repeated plugging cycles

  • Stable performance in humid or dusty conditions

Because of these properties, the connector performs reliably in industrial environments, field equipment, and outdoor installations.

Reliable Push Pull Self Locking Mechanism

The push pull locking system is designed for quick and secure connections. When the plug is inserted into the socket, the connector locks automatically with a firm mechanical structure.

This mechanism provides several advantages:

  • Fast connection and disconnection

  • Secure locking without screws

  • Resistance to vibration and accidental unplugging

  • Easy one-hand operation

Such features make the ST connector ideal for equipment requiring frequent connection and disconnection, such as testing systems, instrumentation devices, and portable electronic equipment.

Waterproof and Stable Electrical Performance

The ST aviation connector is engineered to deliver stable electrical transmission and environmental protection. With proper cable assembly, the connector can achieve reliable waterproof and dustproof performance, making it suitable for challenging working conditions.

Typical electrical features include:

  • Stable current and voltage transmission

  • Low contact resistance

  • High insulation reliability

  • Excellent signal integrity

These characteristics ensure consistent performance in automation control systems, power distribution modules, and electronic equipment.
ST.jpg

Wide Range of Industrial Applications

Thanks to its robust construction and dependable locking structure, the ST push pull connector is used across many industries.

Common applications include:

  • Industrial automation equipment

  • Communication devices

  • Test and measurement instruments

  • Medical electronics

  • Military and defense equipment

  • Outdoor electronic systems

Its combination of durability, quick operation, and reliable performance makes it a practical solution for engineers and equipment manufacturers.

Conclusion

The ST Series push pull circular connector with brass chrome plated housing is designed to provide secure, durable, and efficient electrical connections. With its self locking push pull structure, strong metal shell, and dependable waterproof capability, it meets the requirements of modern industrial and electronic equipment.

Whether used in automation systems, communication devices, or precision instruments, the ST connector offers long-lasting performance and convenient operation, making it a reliable choice for demanding connection applications.

Item

Parameters

Number of Cores

4 Pin

Gender

Male/Female

Housing Material

Zinc Alloy with Blacken Nickel Plated

Cores Material

Brass Plated with Gold

Insulator Material

Phenolics

Locking System

Screw Locking

Temperature Range

-20℃, +85℃

Rated Current (A)

5A/10A

Rated Voltage (AC.V)

125V/200V/250V

Test Voltage (AV.C)1Min

1500V

Insulation Resistance ()

≤2000

Contact Resistance ()

≤10

Termination

Welding Cable


Related Resource


Quality Control
Dimensional Accuracy Testing for Connectors with 2.5D Measurement
Dimensional Accuracy Testing for Connectors with 2.5D Measurement
Ensure precise connector dimensions with our 2.5D measuring instrument, verifying terminal positions, alignment, and assembly consistency.
Electrical Performance Testing in Connector Quality Control
Electrical Performance Testing in Connector Quality Control
Automotive electrical connectors require rigorous testing for voltage withstand, insulation resistance, and contact resistance to ensure vehicle circuit safety. Millisecond-level power failures or breakdowns can cause ADAS/ECU system crashes, creating critical control risks. Learn about essential quality testing protocols and performance standards.

Customer Reviews

   

Score
 Remove

Review Title

Review Text

   Great ST80 for Cabinet Wiring!


FashionFiend  2026-02-01

Cuts clutter, shielding for high-speed, easy maintenance—game-changer!
   Great ST40 for Pro Gear!


SmartShopper88  2026-02-01

Smooth mating, high core density, tough build—will repurchase!
   ST80 for Pro High-Speed Gear!


HomeGoodsGal  2026-02-01

Zero interference, secure lock, tough build—will repurchase for sure!
   ST60 = Heavy-Duty Multi-Core Win!


QuickDeals123  2026-02-01

Tough build, tight lock, zero signal drop—great for big setups!
Need Help?
Please leave your contact information to get our latest catalog
Get In Touch Now >
KMYD Connectors

Tel: +8619924482730

Email: info@kmydconnector.com

MP/WhatsApp: +86-19924482730

Manufacturer Address:Baoan District, Shenzhen City, Guangdong Province,China

NEW KEYWORD

About Us

Products

Information