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OEM Factory for Vacuum Circuit Breakers & Operating Mechanisms

Quality control from process detail. Serve at your site. Trusted by global partners since 2000.

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About JULI ELECTRIC

Zhejiang Juli Electric Co., Ltd. is a high-technology enterprise focused on the R&D, manufacturing, marketing, and after-sales service of Vacuum Circuit Breakers (VCB), Spring Operating Mechanisms, and Recloser Controllers. With over 300 employees and a technical team comprising more than 35%, we are committed to innovation and excellence in medium voltage electrical solutions.

Since our incorporation in 2000, we have built our own laboratory and maintained strict quality control throughout every production phase. As a reliable OEM factory, we serve clients across Asia, Europe, Africa, and South America.

2000
Year of Incorporation
360+
Company Staff
35%
Technical Team
Factory Interior

Our Products

High-performance vacuum circuit breakers and operating mechanisms designed for reliability, durability, and precision in medium voltage applications.

VS1-12 Indoor Vacuum Circuit Breaker

VS1-12

Indoor Vacuum Circuit Breaker

  • Rated Voltage: 12kV
  • Rated Current: 630A - 3150A
  • Short-Circuit Breaking: 25kA - 40kA
  • Indoor fixed or withdrawable type
CT19BN(W) Spring Operating Mechanism

CT19BN(W)

Spring Operating Mechanism

  • Designed for VS1 series VCBs
  • Stored energy spring operation
  • High mechanical endurance
  • Manual & motor charging options
ZW32-12 Outdoor Vacuum Circuit Breaker

ZW32-12

Outdoor Vacuum Circuit Breaker

  • Rated Voltage: 12kV
  • Sealed pole design for outdoor use
  • Weather-resistant enclosure
  • Ideal for distribution networks
CTB Spring Motor Operating Mechanism

CTB

Spring Motor Operating Mechanism

  • For medium voltage VCBs
  • Integrated motor drive
  • Auto-reclosing capability
  • Robust design for continuous operation
High-Tech Recloser Controller

RC-V12

Recloser Controller for VCB

  • Microprocessor-based control
  • Overcurrent & earth fault protection
  • Remote monitoring via SCADA
  • Programmable auto-reclose sequences
Permanent Magnet Actuator VCB

PMA-VCB

Vacuum Circuit Breaker with Permanent Magnet Actuator

  • No spring fatigue issues
  • Precise stroke control
  • Low maintenance
  • High-speed operation
GIS Vacuum Circuit Breaker Mechanism

GIS-OM

Operating Mechanism for GIS VCB

  • Compact design for GIS integration
  • High reliability in enclosed systems
  • Sealed against moisture and dust
  • Compatible with SF6 and clean air GIS
High-Voltage Test Equipment

HV-TEST-PRO

In-House Quality Testing System

  • Dielectric strength testing
  • Timing & travel analysis
  • Dynamic resistance measurement
  • Full QC validation before shipment
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Why Choose JULI?

Quality Assured

Every product undergoes rigorous testing in our in-house laboratory to ensure compliance with international standards.

OEM Expertise

Customization and private labeling available. We support global partners with tailored electrical solutions.

35% Technical Team

Our engineering team drives innovation, ensuring cutting-edge design and continuous improvement.

Global Reach

Trusted by clients in over 50 countries. Fast shipping and responsive after-sales support.

24+
Countries Served
24 Years
In Business
360+
Employees
1000+
Projects Delivered

Frequently Asked Questions

What is a Vacuum Circuit Breaker (VCB)?

A VCB is a switching device that uses a vacuum as the arc quenching medium. It is commonly used in medium voltage applications for its reliability, long life, and low maintenance.

Can JULI provide OEM/ODM services?

Yes, we are a professional OEM factory with full R&D and manufacturing capabilities. We support custom branding, packaging, and technical modifications.

What certifications do your products have?

Our products comply with IEC, GB, and other international standards. We conduct full type tests and routine tests in our in-house laboratory.

How do I request a product catalog?

You can download the latest catalogs from our official website or contact us directly. We offer the Vacuum Circuit Breaker Catalog 2023 and VCB Operating Mechanism Catalog 2023.

Get in Touch

For inquiries, technical support, or partnership opportunities, visit our official website to contact the JULI team.

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