33kV VCB Panel
A 33kV VCB panel is a medium-voltage vacuum circuit breaker switchboard designed for switching, control, and protection of 33kV feeders and power transformers. Simartech’s IS/IEC 62271-200-compliant panels support up to 3200A, use draw-out or fixed-type vacuum breakers, and feature IP4X CRCA/Aluzinc enclosures with copper or aluminium air-insulated busbars for utility and industrial substations.
The 33kV VCB panel or switchboard integrates Vacuum Circuit Breakers (VCBs), Current Transformers (CTs), Potential Transformers (PTs), Relays, and Meters to efficiently safeguard feeders and transformers. Available in 800A – 20/18.4kA, 1250A – 26.3kA, and ≥1600A – 40kA, this panel or switchboard provides customizable breaker configurations to meet diverse site requirements. While predominantly designed as indoor units, it can be tailored for outdoor installations based on specific environmental needs.
33kV VCB Panel Specifications
| Purpose | Feeders of Transformer Switching/Control and Protection |
| Voltage | 3.3 to 33kV AC |
| STR | As Per Transformer of Client's Requirements |
| Current Rating | Up to 3200A |
| Breaker Type | Vacuum (draw out or fixed type) |
| Reference Standard | IS/IEC 62271 - 200 |
| Maximum Transporting Length | 1000mm |
| Ingress Protection (IP) | 4X |
| Busbar Material | Aluminium or Copper (as Per Client's Requirements) |
| Busbar Insulation | Air Insulated |
| Cublicle Enclosure Material | CRCA/Aluzinc/GP Sheets |
| Sheet Thickness | Main body 2.0 mm and partitions 1.5mm |
| Painting | Powder Coating Thickness between 60-80 microns |
| Wiring | Copper flexible wires as per rating required with sleeved lugs, number ferules, phase color coding |
| Current Transformer | Resin Cast CT with rated primary and secondary as per relays and meters with required VA burden and class of protection and metering |
| Potential Transformer | Resin Cast PT with rated primary and secondary as per relays and meters with required VA burden and class of protection and metering |
| Protection Relays | As per requirement of the feeder/transformer including auxiliary relays |
| Metering | As per requirement of the feeder/transformer like Ampere, Voltage, TVM or equivalent parameters |
| Indications/Annunciations | For status of the panel like ON, OFF or TRIP |
| Auxiliary Supply | DC 24 to 220V and AC 110V to 415V as per requirement of the customer |
| Main Power Connection Terminals | Cable entry from Top or Bottom |
“33kV distribution is shifting to vacuum technology due to SF6 phase-out regulations. VCBs offer 30,000 mechanical operations with zero GHG emissions.” — Lead Design Engineer, Simartech
Source: IS/IEC 62271-200:2021, Central Electricity Authority Guidelines 2024
Applications
33/11kV Primary Substations: Incoming/outgoing feeder protection, transformer switching
Industrial HT Consumers: Steel, cement, textile plants with 33kV dedicated feed
Solar & Wind Farms: Inverter/transformer pooling at 33kV level
Metro Rail & Airports: Traction substations, ring main units
Water Treatment Plants: HT motor feeders, capacitor banks
Commercial Complexes: 33kV bulk supply, bus coupler
Data Centres: 33kV dual feed, auto-changeover
Infrastructure Projects: Airport, hospital, smart city 33kV ring main units
Benefits of 11kV VCB Panels
Superior Safety: Arc quenching in a vacuum means no fire risk, no toxic gas. Internal arc tested per IEC 62271-200 for operator safety
Fast Fault Clearing: Interrupts faults in 3–5 cycles. Protects transformers, cables, and costly equipment from damage
Low Maintenance: No oil replacement, no SF6 gas checks. Sealed vacuum interrupters last 30,000+ operations
Long Service Life: Mechanical life >20,000 operations. Electrical endurance up to 100 short-circuit operations
Compact Design: Metal-clad, draw-out type saves switchyard space vs. traditional breakers. Indoor IP4X design
Environment Friendly: No oil pollution, no SF6 greenhouse gas. Supports green grid and ESG compliance
SCADA & Smart-Grid Ready: Compatible with numerical relays, metering, and IoT. Remote monitoring & control built-in
Low Operating Cost: Minimal spares, no gas handling, reduced downtime. High reliability = lower TCO over 25 years
Benefits of 33kV VCB Panels
We are the top 33kV VCB Panel exporter from India to clients worldwide, trusted for reliable LT/HT switchgear solutions.
Manufacturing Plant: Baddi, Himachal Pradesh and Mohali, Punjab
PAN-India Supply: Delhi NCR, Chandigarh, Ludhiana, Baddi, Gurgaon, Noida, Jaipur, Ahmedabad, Mumbai, Bangalore and other states and Union territories
Export: Nepal, Bhutan, Bangladesh, UAE, Africa, Canada, Japan, USA, Australia and worldwide.
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