The Promoda 11 kV Vacuum Circuit Breaker (VCB) Switchgear Panel is a high-reliability medium voltage distribution solution designed for industrial power networks, captive substations, and utility power systems. Built using a metal-clad air-insulated switchgear architecture, the panel ensures dependable switching, system protection, and operational safety in modern electrical installations.
This switchgear integrates a withdrawable vacuum circuit breaker mounted on a racking trolley mechanism that allows the breaker to be moved between service, test, and isolated positions. This configuration enables safe inspection and testing without disturbing connected power cables, significantly reducing maintenance downtime in operational facilities.
The panel is engineered for 11 kV distribution networks, which are commonly used in industrial plants, infrastructure power systems, and utility substations. Its compartmentalized construction separates the circuit breaker, busbars, cables, and control equipment into independent sections, minimizing fault propagation and improving personnel safety.
Manufactured with heavy-duty sheet steel enclosures, insulated copper busbars, and high-performance vacuum interrupters, the switchgear provides excellent electrical endurance and mechanical stability. The vacuum switching technology ensures rapid arc quenching, minimal contact erosion, and long operational life even under frequent switching conditions.
Designed according to IEC 62271-200 for metal-enclosed switchgear and IEC 62271-100 for circuit breakers, the Promoda 11 kV VCB switchgear panel delivers a reliable and safe power distribution platform suitable for demanding industrial environments.
Key Highlights
Designed for Industrial 11 kV Distribution
Optimized for medium voltage electrical systems widely used in industrial plants and utility substations.
Withdrawable Breaker Configuration
Allows the circuit breaker to move between service, test, and isolated positions for safe maintenance.
High Electrical Endurance
Vacuum interrupter technology ensures consistent switching performance and extended service life.
IEC Standard Compliance
Engineered according to IEC 62271-200 and IEC 62271-100 medium voltage switchgear standards.
Modular Metal-Clad Construction
Fully compartmentalized design improves safety, insulation, and maintenance accessibility.
Reliable Fault Interruption
Capable of interrupting high fault currents in demanding power distribution systems.
Panel Architecture
The switchgear panel incorporates a multi-compartment metal-clad design that enhances operational safety and maintenance accessibility.
- Circuit Breaker Compartment
Contains the withdrawable vacuum circuit breaker mounted on a racking trolley. - Busbar Compartment
Houses insulated copper busbars designed for high current carrying capacity. - Cable Compartment
Provides space for incoming and outgoing cable termination. - Low Voltage Compartment
Contains protection relays, control wiring, metering devices, and auxiliary equipment.
Major Components
- Vacuum Circuit Breaker
Ensures reliable interruption of fault currents. - Withdrawable Breaker Truck
Allows movement between service, test, and isolated positions. - Copper Busbar System
High conductivity busbars designed for stable current distribution. - Automatic Safety Shutters
Metal shutters isolate live contacts when the breaker is withdrawn. - Interlocking System
Prevents incorrect switching operations and enhances operational safety.
Materials and Finish
- Heavy gauge sheet steel enclosure
- Powder-coated corrosion resistant finish
- Silver-plated electrical contacts
- High-grade insulation materials for electrical reliability
| Parameter | Specification |
|---|---|
| Voltage Range | 3.3 kV – 33 kV |
| Rated Current | Up to 3150 A |
| Short Circuit Breaking Capacity | Up to 40 kA |
| Short Time Withstand Current | Up to 40 kA for 3 seconds |
| Circuit Breaker Type | Withdrawable Vacuum Circuit Breaker |
| Internal Arc Classification | AFL / AFLR as per IEC 62271-200 |
| Operating Mechanism | Stored Energy Spring Mechanism |
| Panel Construction | Metal-clad, compartmentalized switchgear |
| Ingress Protection | IP42 / IP54 |
| Panel Height | Approx. 2200 mm |
| Control Wiring | FRLS copper wiring, ferruled and numbered |
| Applicable Standards | IEC 62271-100, IEC 62271-200 |
Safety and Operational Reliability
- Metal-clad enclosure ensuring segregation of high-voltage components
- Automatic metallic shutters isolating energized contacts
- Mechanical and electrical interlocks preventing unsafe switching operations
- Internal arc classification for enhanced operator safety
- Independent compartments for breaker, busbars, cables, and control circuits
Vacuum Switching Technology
- Maintenance-free vacuum interrupters
- Long electrical and mechanical endurance
- Reliable arc interruption under fault conditions
- High switching capacity for industrial power systems
- Suitable for both industrial and utility installations
Design Advantages
- Withdrawable breaker truck enabling safe inspection and servicing
- Front-operated switchgear design for operator convenience
- Expandable panel configuration for future system expansion
- Standardized modular construction
- Optimized insulation and heat dissipation layout
Compared to SF₆ Gas Switchgear
- No greenhouse gas emissions
- No gas pressure monitoring requirements
- Lower environmental impact
- Simplified maintenance procedures
Compared to Oil Circuit Breakers
- No oil leakage or fire risk
- Higher switching reliability
- Reduced maintenance intervals
- Longer equipment lifespan
Compared to Fixed Breaker Panels
- Withdrawable breaker simplifies inspection
- Testing possible without disconnecting cables
- Reduced service downtime
- Improved operator safety
Key Industry Sectors
- Power generation and distribution utilities
- Steel and heavy manufacturing industries
- Cement production facilities
- Oil and petrochemical plants
- Infrastructure and large industrial complexes
Common Installations
- Industrial incoming power distribution systems
- Utility 11 kV distribution substations
- Captive power plant electrical systems
- Transformer feeder protection panels
- Motor feeder switchgear installations
