2 product lines
Indoor Vacuum Circuit Breakers
Indoor VCB platforms for switchgear assemblies and MV distribution protection.
Back to products
Protection Devices
Circuit Breakers for Medium and Low Voltage Protection
Indoor vacuum circuit breakers, outdoor vacuum breakers, SF6 breakers, air circuit breakers and molded case breakers for distribution protection.
Product Functions
Organized by Product Function
1 product lines
Outdoor Vacuum Circuit Breakers
Pole-mounted outdoor VCBs for distribution networks and rural feeders.
Project configured
SF6 Circuit Breakers
SF6 breaker products supplied according to project voltage and protection requirement.
Project configured by engineering
This product type is configured case by case through engineering inquiry.
Product Options
Available Product Lines
VS1
VS1 Indoor Vacuum Circuit Breaker
12kV indoor VCB for KYN28 switchgear.
View product lineZN63A(VS1) / ZN85
ZN63A(VS1) / ZN85 Indoor Vacuum Circuit Breaker
Indoor vacuum circuit breaker family for 12kV to 40.5kV systems.
View product lineZW32-12
ZW32-12 Outdoor Vacuum Circuit Breaker
Outdoor vacuum circuit breaker platform for pole-mounted distribution.
View product lineDW45 ACB
DW45 Air Circuit Breaker
Air circuit breaker platform for LV main incomers.
View product line
CM1 MCCB
CM1 Molded Case Circuit Breaker
MCCB platform for feeder and branch protection.
View product lineEngineering Value
Built Around Real Project Requirements
Circuit breakers protect electrical systems by interrupting fault current and switching circuits under defined operating conditions. Selection depends on voltage, current, breaking capacity, installation type, mechanism, trip unit and coordination with switchgear or panel assemblies.
Switchgear integration
Indoor vacuum circuit breakers can be matched with MV panels such as KYN switchgear according to rated parameters and panel structure.
Outdoor feeder protection
Outdoor vacuum breaker platforms can support pole-mounted distribution, rural feeders and automation-ready networks.
LV panel protection
ACB and MCCB selections can be coordinated with busbar rating, feeder current and project protection settings.
Applications
Where This Product System Is Used
MV switchgear assemblies
Indoor VCBs for incoming, outgoing, transformer and bus-tie feeders.
Overhead distribution lines
Outdoor vacuum breakers for feeder switching and network protection.
Low-voltage switchboards
ACB and MCCB devices for main incomers, couplers and outgoing feeders.
Industrial protection systems
Breaker selection for motors, transformers, capacitor banks and auxiliary loads.
Procurement Support
What to Confirm Before Quotation
A clear technical request helps us recommend the right configuration, prepare drawings faster and avoid repeated clarification during procurement.
Buyer Checklist
Rated voltage, rated current and frequency
Breaking capacity and short-time withstand requirement
Indoor, outdoor, fixed, withdrawable or pole-mounted installation
Operating mechanism, auxiliary contacts and control voltage
Trip unit, relay interface and protection setting needs
Panel compatibility and mounting dimensions
Technical FAQ
Common Buyer Questions
What is the main difference between VCB and ACB products?
VCB products are used mainly in medium-voltage systems and interrupt current in a vacuum chamber. ACB products are used in low-voltage main distribution panels and are selected for LV busbar and feeder protection.
Can outdoor breakers support distribution automation?
Outdoor breaker projects can be configured with control, measurement and communication requirements when the project needs feeder automation or remote operation.
What should be checked before replacing a circuit breaker?
Rated voltage, rated current, breaking capacity, installation type, mechanism, control voltage, interlock interface and panel dimensions should be checked before replacement.
Send Your Specs
Get a Project-Matched Recommendation
Share the basic electrical and site requirements for Circuit Breakers. Our team will review the fit, suggest the right product line and prepare quotation-ready follow-up.
What to Send
Rated voltage and frequency
Capacity, current or feeder quantity
Indoor / outdoor installation site
Destination country and quantity
Related Downloads
Datasheets and Catalog Files
Use these files for early supplier screening, then send voltage, rating, quantity and destination country for a project-specific quotation.
Approved Download Center
Latest CEO-approved product datasheets and catalogs. Legacy catalog files have been replaced.
YB / ZGS11 Compact Substation Catalog
Compact substation package reference for MV-transformer-LV projects.
KYN28A-12 MV Switchgear Datasheet
Medium-voltage panel ratings and project checklist.
LV Switchgear Selection Guide
Low-voltage switchgear configuration and RFQ preparation.
Send Inquiry
Ask for drawings, lead time and quotation support.