Zhejiang Yonggui Electric Equipment Co., Ltd.

QB Circular Connectors

This series of products are mainly used in the cabinet box. This series of electrical connector adopts buckle connection, and the contact parts mainly adopt crimping structure, which has the advantages of quick connection and separation, vibration resistance, shock resistance, etc. It is widely used in railroad, aviation, industry, electronics and other fields.

Specifications of QB Circular Connectors

① Electrical parameters

Rated current

φ1:5 A, φ1.6:10A, φ2.4:23A
Rated voltageφ1:110 V AC, φ1.6:300V  AC, φ2.4:500V  AC
Withstanding voltageφ1:1500   V AC  50Hz  No breakdown or flashover within 1min.
φ1.6:2000 V AC 50Hz No breakdown or flashover within 1min.
φ2.4:2500 V AC 50Hz No breakdown or flashover within 1min.

Contact resistance

φ1:≤3mΩ, φ1.6:≤2.5mΩ, φ2.4:≤1.5mΩ
Insulation resistance≥2000 M

② Mechanical parameters

Mechanical life750 times

Vibration

meet the vibration requirements of GB/T21563 in category 2

③ Other parameters

Operating temperature-55℃~+125℃
Relative humidity90%~95% (Temperature: 40±2℃)
Protection levelIP67 (with suitable tail accessories)
Environmental protectionRoHS

Housing

Aluminum alloy

Surface treatmentOxidized military green/nickel plated/oxidized black

Insulator

Engineering plastic

Flame retardant ratingEN45545

Contacts

Copper alloy

Surface treatmentgold/silver plated


Contact Yonggui Electric for Connectors
Contact Yonggui Electric for Connectors
We Can Provide
  • Customized Solutions

    Tailoring connectors to your unique needs.

  • Expert Technical Support

    Provide system-level solutions

  • Quick Response

    Respond to needs within 12 hours

Blog & News
Yonggui MQD/MQDB Liquid Cooling Quick Disconnects for Safe and Efficient AI Data Centers
As AI technology continues to advance, the power consumption of high-performance computing hardware continues to rise. Liquid cooling has evolved from an optimization option for data centers into an ...
Read More
Yonggui MCS Charging Connector and Vehicle Inlet Receive TÜV Rheinland Certification
Yonggui’s MCS charging connector and vehicle inlet have received TÜV Rheinland product certification. Separate Certificates of Conformity have also been issued under the EU Low Voltage Directive 201...
Read More
SM/SH Series Underwater Connectors: Reliable Connectivity for Deep-Sea Applications
The vast ocean holds tremendous opportunities. With the rapid development of ocean observation, underwater robotics, and deep-sea operation equipment, reliability of underwater electrical connections ...
Read More
Important Notice: Yonggui Electric's official business emails use the @yonggui.com domain. Please verify email communications before taking action. Learn more ›