Overview of Withdrawable VCB Vacuum Circuit Breaker 12KV Electrical Power Distribution Switchgear Panel / Switchboard

Withdrawable VCB Vacuum Circuit Breaker 12KV Electrical Power Distribution Switchgear Panel / Switchboard is a type of circuit breaker where the arc quenching medium is a high vacuum. Unlike older breakers that used air, oil, or SF6 gas to extinguish the electrical arc, a VCB utilizes the superior dielectric properties of a vacuum to rapidly extinguish the arc when the contacts separate, thereby interrupting the current flow and protecting the electrical system.

Characteristics of Withdrawable VCB Vacuum Circuit Breaker 12KV Electrical Power Distribution Switchgear Panel / Switchboard

Strong arc extinguishing ability: using vacuum medium to quickly extinguish the arc, with high breaking ability.

Safe and environmentally friendly: No fire or explosion risks, no greenhouse gas emissions.

Easy maintenance: Vacuum bubbles are maintenance free, with a long overall maintenance cycle and low workload.

Long lifespan: Both mechanical and electrical lifespan are very long.

Small size: Compact structure, saving space.”

Specifications of Withdrawable VCB Vacuum Circuit Breaker 12KV Electrical Power Distribution Switchgear Panel / Switchboard

This Withdrawable VCB Switchgear Panel handles 12KV power distribution. It uses a Vacuum Circuit Breaker (VCB) as the core protection device. The breaker interrupts electrical faults fast. Vacuum technology inside the breaker extinguishes arcs effectively. This ensures safe operation under short circuit conditions.

The breaker mounts on a movable chassis. You can pull this chassis out from the panel easily. This design makes maintenance and inspection simple. The panel remains live during breaker removal. Workers stay safe. Shutters automatically cover the live busbar contacts. This prevents accidental contact. Mechanical interlocks block unsafe operations. These interlocks stop you closing the breaker when it’s partially inserted. They also stop you racking the breaker when it’s closed.

The main panel structure is robust sheet steel. It provides a strong enclosure. Copper busbars carry high current safely. Insulators support the busbars. Arc chutes contain any internal arcs. The breaker connects to fixed primary contacts. Secondary contacts handle control signals. These stay connected until the breaker moves almost out.

Key specifications include a 12KV rated voltage. It handles up to 630A or 1250A continuous current. The short circuit breaking capacity reaches 25kA or 31.5kA. It meets IEC 62271-100 standards. The VCB mechanism operates reliably. Spring charging is manual or motorized. Protection relays monitor the circuit. They trip the breaker during overloads or faults. The panel design is compact. It saves space in substations. Operation is straightforward. Reliability is high. This equipment minimizes downtime. It protects your electrical network efficiently.

Applications of Withdrawable VCB Vacuum Circuit Breaker 12KV Electrical Power Distribution Switchgear Panel / Switchboard

Withdrawable VCB switchgear panels are essential for managing power in industrial settings and buildings. They use a vacuum circuit breaker (VCB) rated for 12KV. This breaker safely interrupts electrical faults like short circuits. The vacuum inside the interrupter chamber stops the arc quickly. This method is much better than older air or oil breakers. Vacuum technology gives reliable performance and needs less maintenance.

The key feature is the withdrawable design. The entire VCB unit slides out from the main panel structure. Technicians can easily remove it for checks or repairs. This happens without shutting down the whole switchboard. Power keeps flowing to other sections. This design greatly reduces downtime during maintenance. It also makes the system safer for workers. Personnel access the breaker safely away from live parts.

These panels include strong safety mechanisms. Automatic shutters cover the main contacts when the breaker is removed. This prevents accidental contact with live busbars. Mechanical interlocks are also standard. They enforce safe operating sequences. You cannot close the breaker while it’s moving. You cannot rack out the breaker when it’s closed. These features prevent dangerous mistakes.

Withdrawable VCB switchgear is common in many places. Factories rely on it for their heavy machinery power. Large office buildings use it for their main electrical feeds. Hospitals need it for critical power distribution. Substations use it for controlling medium voltage circuits. The system handles high currents efficiently. It protects expensive equipment from damage. The design supports future expansion easily. New breakers can be added as power needs grow.

Company Profile

PDDN Photoelectron Technology Co., Ltd. is one of the leading enterprises in power electronics technology and power products, which is fully involved in developing solar inverters， transformers, voltage regulators, distribution cabinets, thyristors， modules， diodes， heaters, and other electronic devices or semiconductors. We will be committed to providing users with high-quality, efficient products and considerate service.

It accepts payment via Credit Card, T/T, West Union, and Paypal. PDDN will ship the goods to customers overseas through FedEx, DHL, by sea, or by air. If you want high-quality Withdrawable VCB Vacuum Circuit Breaker 12KV Electrical Power Distribution Switchgear Panel / Switchboard, please send us inquiries; we will be here to help you.

Payment Methods

L/C, T/T, Western Union, Paypal, Credit Card etc.

Shipment

By sea, by air, by express, as customers request.

Storage Conditions

1) Store in a dry environment at room temperature.

2) Avoid damp and high temperature.

3) Use immediately after opening the inner packing bag.

5 FAQs of Withdrawable VCB Vacuum Circuit Breaker 12KV Electrical Power Distribution Switchgear Panel / Switchboard

Here are 5 key FAQs about the 12KV Withdrawable VCB Switchgear Panel:

What is this Withdrawable VCB Switchgear?
This is a high-voltage electrical panel. It controls power flow in distribution networks. The core component is a 12KV Vacuum Circuit Breaker (VCB). This breaker interrupts current using a vacuum. The “withdrawable” part means the VCB assembly slides out. You can remove it for maintenance without shutting down the whole panel. This design improves safety. It also reduces downtime.

Why choose a withdrawable design?
The withdrawable feature offers major benefits. You isolate the circuit breaker easily. Do this for servicing or replacement. The rest of the switchboard stays live. You avoid total power loss to connected equipment. This enhances operational flexibility. It makes maintenance safer and faster. Fixed breakers require a full shutdown for any work. That causes more disruption.

What are the main specifications?
The key specs are voltage class and breaking capacity. This panel is rated for 12,000 volts (12KV). The VCB must handle the system’s maximum fault current. Check the rated short-circuit breaking current. Common values are 25kA, 31.5kA, or 40kA. Confirm the continuous current rating matches your load. Verify the insulation level meets standards. Look for IP protection ratings for dust and water resistance.

Where is this switchgear typically used?
This equipment is common in industrial power systems. Use it in factories, large buildings, and power plants. It fits well in substations and primary distribution points. It protects transformers, feeders, and large motors. The 12KV rating suits medium voltage networks. The withdrawable VCB is ideal for critical circuits. Minimizing downtime during maintenance is essential here.

How does the VCB ensure safety?
The vacuum interrupter inside the breaker is crucial. It extinguishes the arc when opening under load. This happens very fast. It prevents dangerous arcs and fire risks. The withdrawable mechanism adds safety layers. Operators work on the breaker isolated from live busbars. The panel structure provides solid earthing. Safety shutters block access to live parts. These features protect personnel. They also protect the equipment.