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mart Power Solutions by Rockwill – Engineered for Reliability & Efficiency

Rockwill delivers integrated electrical solutions for smart grids, urban infrastructure, renewable integration, and industrial applications. From medium-voltage automation to EV charging networks and prefabricated substations, our systems ensure stable, efficient, and future-ready power distribution. Customized. Connected. Reliable.

ROCKWILL 12kV Indoor Vacuum Circuit Breaker (VSC Series) Technical Solution

Rockwill 06/10/2025

Ⅰ. Core Functions & Performance​

  1. ​Electrical Parameters​

Parameter

Value

Notes

Rated Voltage

12kV

-

Rated Current

630A, 800A, 1250A, 1600A

Customizable

Short-Circuit Breaking Capacity

20kA, 25kA, 31.5kA

Customizable

Power-Frequency Withstand Voltage (1min)

Dry: 48kV / Wet: 38kV

DL/T403 Compliant

Lightning Impulse Withstand Voltage

75kV

-

Mechanical Life

≥10,000 operations

Spring mechanism, oil-free design

Short-Time Withstand Current (4s)

31.5kA

-
  1. ​Control Characteristics​
    • ​Operating Mechanism:​​ Spring-operated (maintenance-free)
      • Coil Voltage (Closing/Tripping): AC/DC 110V/220V (optional)
      • Motor Operating Voltage: Customizable
    • ​Auxiliary Contacts:​​ 8 NO (Normally Open) + 8 NC (Normally Closed)
    • ​Monitoring:​​ Mechanical counter (operation records)

 

​II. Applications & Compatibility​

  1. ​Typical Applications​
    • ​Power Systems:​​ Power plants, substation in/outlet protection
    • ​Industrial:​​ Petrochemical, metallurgical, main distribution cabinets for manufacturing
    • ​Public Facilities:​​ Airports, data centers, residential distribution networks
  2. ​Switchgear Compatibility​

Cabinet Series

Compatible Models

Domestic Cabinets

KYN28, KYN96, XGN series

International Cabinets

ABB ZS series

​Installation Type:​​ Fixed (Lateral Type)

  
  1. Note: Custom non-standard cabinets supported; installation drawings required.

 

​III. Technical Advantages & Innovations​

  1. ​Reliability Enhancement​
    • ​Vacuum Interrupter:​​ Explosion-proof, maintenance-free
    • ​APG Epoxy Casting:​​ Monolithic insulation parts (humidity resistance ≤95%, pollution-proof)
    • ​VSC Terminal Buffer:​​ Shock/vibration resistant (-25℃~+40℃)
  2. ​Safety & Maintenance​
    • ​Interlocking:​​ Mechanical lock to prevent load switching errors
    • ​Visual Position Indicator:​​ Mechanical ON/OFF status display
    • ​Modular Design:​​ Rapid replacement of coils/auxiliary switches

 

​IV. Customization Services​

Customization Item

Options

Insulation Medium

Air-insulated / Gas-insulated (SF₆ alternative)

Secondary Wiring Layout

Front/Rear/Side wiring

Special Current Ratings

>1600A or >31.5kA designs

High-altitude Adaptation

≤2500m (derating required for higher elevations)

 

​V. Installation & Maintenance​

  1. ​Environmental Requirements​
    • Altitude: ≤2500m (15% derating beyond)
    • Temperature: -25℃ ~ +40℃
    • Humidity: Daily average ≤90% (non-condensing)
    • IP Rating: IP2X (upgrades to IP4X when installed)
  2. ​Documentation Support​
    • Certificates, installation drawings, wiring diagrams
    • Type test reports compliant with GB/DL/IEC standards

 

​VI. Typical Configurations (Examples)​​

Application Scenario

Recommended Configuration

Protection Target

Substation Inlet Cabinet

VSC-1250A/31.5kA + Motorized

Main transformer short-circuit

Industrial Distribution Center

VSC-1600A/25kA + Rear Wiring

Large motor control

Commercial Complex

VSC-800A/20kA + Front Wiring

LV busbar segmentation

 

​VII. Support Services​

​Rockwill Electric Technical Guarantee:​​

  • ​Technical Consultation:​​ +86-577-27869966, support@rockwill.com
  • ​Customization Response:​​ ≤3 business days
  • ​Warranty:​​ 2 years (core components included)
  • ​Resources:​​ http://www.rockwill.cn
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