Skip to content
XBRELE-LOGO-MAIN-official
  • home
  • products
    • Power Distribution Transformers
      • Amorphous Alloy Transformers
      • Dry Type Transformer Manufacturer: 11kV-35kV Cast Resin Units
      • oil immersed transformer
    • vacuum circuit breaker
      • VS1 vacuum circuit breaker
      • zn85 vacuum circuit breaker
      • ZW20 Vacuum Circuit Breaker
      • zw32 vacuum circuit breaker
    • vacuum contactor
      • CKG Vacuum Contactor
      • jcz vacuum contactor
      • Lcz Vacuum Contactor
      • Low Voltage & Solid Series
    • Switchgear Parts & Epoxy Insulation Components
      • Epoxy Contact Box Series (12kV – 40.5kV)
      • High-Voltage Switchgear Components & Safety Interlocks
      • Indoor Epoxy Post Insulators & Capacitive Sensors
      • Indoor HV Earthing Switches
      • SF6 Load Break Switch (FLN36-12) & Surge Arresters
      • Vacuum Circuit Breaker Parts & Contacts
      • Wall Bushings & Through-Wall Insulators (12kV-40.5kV)
  • Knowledge
    • VCB Hub
    • Vacuum Contactor Hub
    • Transformer Hub
    • Components Hub
    • RMU Recloser Hub
    • Resources
    • News
  • About
  • Contact

Need Full Specifications?

Download our 2025 Product Catalog for detailed drawings and technical parameters of all switchgear components.

Get Catalog
XBRELE-LOGO-MAIN-official
  • home
  • products
    • Power Distribution Transformers
      • Amorphous Alloy Transformers
      • Dry Type Transformer Manufacturer: 11kV-35kV Cast Resin Units
      • oil immersed transformer
    • vacuum circuit breaker
      • VS1 vacuum circuit breaker
      • zn85 vacuum circuit breaker
      • ZW20 Vacuum Circuit Breaker
      • zw32 vacuum circuit breaker
    • vacuum contactor
      • CKG Vacuum Contactor
      • jcz vacuum contactor
      • Lcz Vacuum Contactor
      • Low Voltage & Solid Series
    • Switchgear Parts & Epoxy Insulation Components
      • Epoxy Contact Box Series (12kV – 40.5kV)
      • High-Voltage Switchgear Components & Safety Interlocks
      • Indoor Epoxy Post Insulators & Capacitive Sensors
      • Indoor HV Earthing Switches
      • SF6 Load Break Switch (FLN36-12) & Surge Arresters
      • Vacuum Circuit Breaker Parts & Contacts
      • Wall Bushings & Through-Wall Insulators (12kV-40.5kV)
  • Knowledge
    • VCB Hub
    • Vacuum Contactor Hub
    • Transformer Hub
    • Components Hub
    • RMU Recloser Hub
    • Resources
    • News
  • About
  • Contact

Need Full Specifications?

Download our 2025 Product Catalog for detailed drawings and technical parameters of all switchgear components.

Get Catalog

Request a Quote for High-Voltage Components&Equipment

Tell us your requirements — rated voltage, model, quantity, and destination — and our XBR Electric team will prepare a detailed quotation within 24 hours.
Contact Form Demo
LOGO-MAIN-official-transparementLOGO-MAIN-official-transparement
  • home
  • products
    • View All Products
      Vacuum Circuit Breakers
      Indoor
      VS1 & LZND Series ZN85 Series (40.5kV)
      Outdoor
      ZW32 Pole-mounted ZW20 Boundary VCB
      Vacuum Contactors
      LV & Mining
      Low Voltage & Solid Series
      Medium & High Voltage
      CKG Series (Compact) JCZ Series (Standard) LCZ Series (HV 40.5kV)
      Power Transformers
      Distribution Types
      Dry Type (Cast Resin) Oil Immersed (S11/S13) Amorphous Alloy
      Switchgear Components
      Insulation & Connection
      Epoxy Contact Boxes Insulators & Sensors Wall Bushings VCB Arms & Contacts
      Switching & Safety
      SF6 LBS & Arresters Earthing Switches Safety Interlocks
      Featured Product JCZ5
      Featured

      JCZ5 Series

      High-voltage vacuum contactor. Optimized for frequent operation in 7.2kV systems.

      View Details
  • Service
    • serivce mega

      Manufacturing Services

      Explore XBRELE's complete OEM manufacturing capabilities for Medium & High Voltage power distribution equipment.

      View All Services
      Vacuum Circuit Breaker Factory for VS1, ZW32 & ZN85 series breakers (12kV-40.5kV).
      Vacuum Contactor High-endurance contactors for Mining, Motors & Capacitors.
      Distribution Transformer Manufacturing Oil-Immersed & Dry-Type (Cast Resin) units.
      Switchgear Components OEM parts: Insulators, Contact Boxes, Earthing Switches.

  • Knowledge
    • VCB Hub
    • Vacuum Contactor Hub
    • Transformer Hub
    • Components Hub
    • RMU Recloser Hub
    • Resources
    • News
  • About
  • Contact
QUOTATION
LOGO-MAIN-official-transparementLOGO-MAIN-official-transparement

Vacuum circuit breaker knowledge

Contact us
All (184)industry news (3)Power distribution transformer knowledge (34)switchgear parts knowledge (55)Vaccum contactor knowledge (50)Vacuum circuit breaker knowledge (71)
Indoor vs outdoor VCB selection overview showing VS1/ZN85 vs ZW20/ZW32 use cases

Indoor vs Outdoor VCB: what “environment” changes in the breaker design

  • Hannah
  • December 25, 2025
  • Vacuum circuit breaker knowledge

“Indoor vs outdoor” is a boundary condition. It changes what must be sealed, what ages first, and what you’re actually…

XBRELE-style infographic cover explaining vacuum circuit breaker ratings kV A kA BIL TRV and Icw

Vacuum Circuit Breaker Ratings Explained: kV, kA, BIL, Icw, Duty

  • Hannah
  • December 22, 2025
  • Vacuum circuit breaker knowledge

Decode key vacuum circuit breaker ratings including voltage class, interrupting current, BIL, short-time withstand, and duty cycle before RFQ submission.

Feature illustration of an epoxy contact box showing insulated terminals, sealing, and key components

Epoxy Contact Box Basics: Selection, Installation and Inspection Guide

  • Hannah
  • December 21, 2025
  • switchgear parts knowledge, Vacuum circuit breaker knowledge

A practical epoxy contact box guide for panel builders and maintenance teams covering selection, installation, inspection and failure checks.

High voltage ceramic vacuum interrupter component on a dark industrial background.

What Is a Vacuum Interrupter (VI) and How Does It Work?

  • Hannah
  • December 17, 2025
  • switchgear parts knowledge, Vacuum circuit breaker knowledge

Executive Summary: Engineering Quick View The “Heart” of VCBs: The Vacuum Interrupter (VI) is the globally accepted standard for medium-voltage…

High-voltage SF6 load break switchgear mechanism in a modern electrical substation environment.

What Is an SF6 Load Break Switch (LBS)? The Definitive Engineering Guide

  • Hannah
  • December 16, 2025
  • switchgear parts knowledge, Vacuum circuit breaker knowledge

Engineering Key Takeaways 🔹 LBS vs. VCB Distinction: An LBS is designed for load management (switching nominal currents), whereas a…

Modern medium voltage vacuum circuit breaker (VS1 type) installed in a high-tech substation switchgear panel.

What Is a Vacuum Circuit Breaker (VCB) and How Does It Work?

  • Hannah
  • December 15, 2025
  • Vacuum circuit breaker knowledge

 Executive Summary: Engineering Quick View The Vacuum Circuit Breaker (VCB) is the globally accepted standard for medium-voltage switching, offering…

The difference between vcb and contactor

The difference between vcb and contactor

  • Hannah
  • November 29, 2025
  • Vacuum circuit breaker knowledge

The difference between vcb and contactor lies in protection and switching: VCBs interrupt faults, while contactors handle frequent load switching.

Vacuum Contactor or Vacuum Circuit Breaker Which Fits Your Medium Voltage Panel

Vacuum Contactor or Vacuum Circuit Breaker Which Fits Your Medium Voltage Panel

  • Hannah
  • November 29, 2025
  • Vacuum circuit breaker knowledge, Vaccum contactor knowledge

Compare vacuum contactor vs vacuum circuit breaker to choose the best fit for your medium voltage panel based on switching, load, and protection needs.

Request a Quote or Technical Support

Tell us your voltage class, rated current, breaking capacity, standards (IEC/IEEE), and application. If you have a BOM or single-line diagram, attach it—our engineers typically respond within 24 hours.

Factory Direct 24h Response OEM / ODM
Contact Form Demo
XBRELE Logo

XBRELE is a dedicated MV/HV manufacturer for switchgear components, vacuum switching devices, and power transformers—supporting OEM panel builders, utilities, and EPC projects worldwide.

  • No.196-28, Wei 12 Road, Yueqing Economic Development Zone, Yueqing City, Zhejiang Province, China 325600
  • +86 138 1977 6763
  • sale@xbrele.com

Vacuum Circuit Breakers

  • VCB Hub (12kV–40.5kV)
  • VS1 Indoor VCB
  • ZN85 40.5kV Indoor
  • ZW32 Outdoor Pole-mounted
  • ZW20 Recloser / Sectionalizer

Vacuum Contactors

  • Vacuum Contactor Hub
  • CKG Series (Motor / Capacitor)
  • JCZ Series (MV Switching)
  • LCZ Series (12kV–40.5kV)
  • LV & Solid Insulated Series

Power Transformers

  • Transformer Hub
  • Oil-Immersed Transformers
  • Dry-Type Transformers
  • Amorphous Alloy Series
  • Transformer OEM Solutions

Switchgear Parts & Company

  • Switchgear Parts Hub
  • Epoxy Contact Boxes
  • Safety Interlocks & Auxiliaries
  • VCB Parts & Contacts
  • Service & Engineering Support
  • Manufacturing Capabilities
  • About XBRELE
  • Resources
  • Contact
© 2025 XBRELE. All Rights Reserved.
Privacy Policy Terms & Conditions Sitemap

English
हिन्दी Русский தமிழ் Français Italiano Deutsch العربية Español Português do Brasil