10KV 12KV Withdrawable Vacuum Circuit Breaker 3 Pole VCB for Electrical Panel

(ZN63)VS1-12 indoor high voltage handcart vacuum circuit breaker is applied to 7.2KV~12KV, three-phase, AC50Hz/60Hz. It is applicable in occasions with frequent operations, acting to protect and control line and electric apparatus.

The product conforms to IEC62271-100, GB1984. It can be used in KYN28A-12 and other center-mounted handcart switchgears.

The fixed type could also be used in the XGN series fixed switchgear.

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10KV 12KV Withdrawable Vacuum Circuit Breaker 3 Pole VCB for Electrical Panel

Product Description

(ZN63)VS1-12 indoor high voltage handcart vacuum circuit breaker is applied to 7.2KV~12KV, three-phase, AC50Hz/60Hz. It is applicable in occasions with frequent operations, acting to protect and control line and electric apparatus. The product conforms to IEC62271-100, GB1984. It can be used in KYN28A-12 and other center-mounted handcart switchgears. The fixed type could also be used in the XGN series fixed switchgear.

Technical Parameters

Main technical parameters
Item nameUnitData
Rated Voltagekv12
Rated Short-Time Working Frequency Withstand Voltage(1 Min)kv42
Rated Lightning Shock Withstand Voltage(Peak)kv75
Rated FrequencyHz50
Rated CurrentA630 12501600.2000.2500. 3150.4000
Rated Short Circuit Breaking CurrentKA2531.540
Rated Short Time Withstand CurrentKA2531.540
Rated Short Circuit DurationS444
Rated Peak Withstand CurrentKA6380100
Rated Short Circuit Closing CurrentKA6380100
Secondary Circuit Power Frequency Withstand Voltage(1Min)V2000
Rated Single/Back-To-Back Capacitor Bank Switchgear On And Off CurrentA630/400 (40KA is 800/400)
Rated Capacitor Bank Closing CurrentKA12.5 (frequency≤1000Hz)
Break-Brake Timems≤50
Closing Timems≤70
Mechanical LifeTimes30000
Wear Thickness Of Dynamic And Static Contacts Is Allowedmm3
Rated Closing Operating VoltageVAC110/220 DC110/220
Rated Tripping Operating VoltageVAC110/220 DC110/220
Rated Voltage Of Energy Storage MotorVAC110/220 DC110/220
Rated Power Of Energy Storage MotorW90
Energy Storage TimeS≤15
Contact Frommm9±1
Over Travelmm3.5±0.5
Contact Closing Bounce Timems≤2
Three-Phase Separation And Closing Are Not Of The Same Periodms≤2
Average Breaking Speed     (Contact Separation-5Mm)m/s0.9–1.3
Average Closing Speed (5Mm–Contact Closing)m/s0.6–1.0
Break-Brake Overshootmm≤2
Main Circuit ResistanceμΩ≤50(630), ≤45(1000/1250), ≤35(1600/2000), ≤25(2500/3150), ≤20(4000)
Contact Closing PressureN3100±200(25-31.5KA) / 4600±2500(40KA)
Operation SequenceO-0.3s-CO-180S-CO

10KV 12KV Withdrawable Vacuum Circuit Breaker 3 Pole VCB for Electrical Panel

Drawing

10kv 12kv vacuum circuit breaker 3 pole fixed type vcb for medium voltage switchgear electrical panel

Technical Support & FAQs

Our products are designed and manufactured in strict compliance with major international standards, including IEC 62271-100, IEC 62271-200 and IEEE C37.04 standards. All products are inspected by our Quality Control department.

We specialize in the medium-voltage range. Our vacuum circuit breakers and switchgear components are suitable for rated voltages from 7.2kV to 40.5kV. The normal current rating covers up to 4000A, and the short-circuit breaking capacity can be designed up to 40kA or higher to meet the demands of various applications, from simple distribution to heavy industrial use.

 Yes, customization is one of our core strengths. We understand that compatibility with existing equipment is critical. We offer OEM and ODM services and can customize components (like brackets, linkages, shutters) and modify breakers to be compatible with major switchgear brands such as Siemens, ABB, Schneider, GE, and others. Please provide your technical drawings or specifications for a precise solution.

Our quality assurance is embedded in every step of the process:

Material Sourcing: We use premium-grade raw materials and components from certified suppliers.

Manufacturing: Advanced CNC machinery and automated production lines ensure precision and consistency.

Testing: 100% routine tests (e.g., contact resistance, mechanical operation, HV withstand) are performed on every unit. We also conduct destructive and non-destructive tests on samples.

For standard products, our lead time is typically 1-4 weeks. For large or customized orders, the lead time will be confirmed based on the project's complexity and quantity.

Certainly. We provide comprehensive pre-sales and after-sales technical support. Our team of engineers can assist with product selection, technical drawings. We also offer detailed documentation, including manuals and drawings. In the rare event of an issue, we provide remote troubleshooting and have a efficient warranty claim process.

Our vacuum circuit breakers are engineered for superior performance and reliability, offering these key benefits:

High Breaking Capacity: Advanced vacuum interrupter technology ensures reliable interruption of high short-circuit currents.

Long Electrical and Mechanical Life: Designed for thousands of operations with minimal maintenance, significantly reducing life cycle costs.

Maintenance-Free Operation: The sealed vacuum interrupters eliminate the need for regular maintenance of the quenching medium, unlike oil or SF6 breakers.

Safety and Environmental Friendliness: They operate silently, are fire-safe, and contain no greenhouse gases (SF6), making them an eco-friendly choice.

Compact Design: Allows for space-saving switchgear designs, which is ideal for retrofitting or modernizing existing substations.

Our products are designed for global deployment. Please specify your environmental conditions for the most suitable product recommendation.

We stand behind our products with a standard 12-month warranty from the date of shipment, covering any defects in materials or workmanship under normal use and service conditions. Our warranty terms are clearly stated in our commercial contract.

 You can request a quote easily by clicking the Contact Us or  Request a Quote button. To provide you with the most accurate and competitive quotation, please have the following information ready:

Product name and model number (if known)

Technical specifications (such as Rated Voltage, Current, Short-circuit breaking current, etc.)

Quantity required

Any special requirements (customization, etc.)

Why Choose Us

technical support

Technical Support

From pre-sales consultation to after-sales service, we offer end-to-end technical support to maximize your project success. Our experts assist with product selection, system integration, troubleshooting, and maintenance, backed by continuous project tracking to keep your operations smooth and efficient.

customized solutions

Customized Solutions

We specialize in tailor-made solutions for switchgear and components, designed to fit your unique requirements. Our team collaborates closely with you to develop products optimized for performance, efficiency, and reliability—ensuring they excel in your specific application.

quality control

Quality Control

Quality is embedded at every stage. We rigorously test all materials prior to production and monitor manufacturing processes to ensure product stability. Before shipment, each unit undergoes comprehensive electrical, mechanical, and safety performance tests to comply with industry standards.

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Quick Response

Our experienced service team provides 24/7 support year-round. Thanks to streamlined processes and a dedicated staff, we deliver 90% of quotations within 24 hours.

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