Overview of 11KV 12KV Circuit Breaker Vacuum Circuit Breaker 3 Pole VCB Fixed Type Vcb For High Voltage Switchgear Electrical Panel

11KV 12KV Circuit Breaker Vacuum Circuit Breaker 3 Pole VCB Fixed Type Vcb For High Voltage Switchgear Electrical Panel 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 11KV 12KV Circuit Breaker Vacuum Circuit Breaker 3 Pole VCB Fixed Type Vcb For High Voltage Switchgear Electrical Panel

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 11KV 12KV Circuit Breaker Vacuum Circuit Breaker 3 Pole VCB Fixed Type Vcb For High Voltage Switchgear Electrical Panel

This 11KV/12KV Vacuum Circuit Breaker is a 3-pole fixed type VCB. It fits inside high voltage switchgear and electrical panels. The breaker uses vacuum technology. This technology reliably interrupts high voltage electrical currents. It provides excellent arc quenching inside the vacuum interrupter bottle. This bottle is sealed for life. It needs no maintenance.

The breaker’s rated voltage is 11 kilovolts or 12 kilovolts. It handles continuous currents. Common ratings are 630A, 1250A, or 1600A. The breaking capacity is strong. It typically manages 25 kiloamperes or 31.5 kiloamperes at the rated voltage. This ensures it stops heavy fault currents safely. The breaker withstands high voltage surges. Its power frequency withstand voltage is 28 kilovolts. Its lightning impulse withstand voltage is 75 kilovolts. These values confirm good insulation strength.

The main contacts are silver alloy. They offer low contact resistance. They ensure efficient current flow. The operating mechanism is spring charged. This mechanism provides fast closing and opening speeds. The mechanism is dependable. It gives consistent performance over many operations. The breaker includes manual charging and closing handles. It also has electrical controls. These controls allow remote operation. The electrical controls need a DC supply. Common voltages are 110VDC or 220VDC.

The entire assembly is rugged. The frame is steel. The vacuum interrupters mount securely inside. The fixed type design means it installs permanently into the panel. It doesn’t withdraw. Terminals are clearly marked. They connect to the main busbars and cables easily. The breaker includes safety shutters. These shutters cover the contacts. They prevent accidental access when the breaker is open. The design meets relevant international standards. It ensures safe operation in demanding electrical systems. The vacuum technology offers a long electrical life. It operates reliably with minimal upkeep.

Applications of 11KV 12KV Circuit Breaker Vacuum Circuit Breaker 3 Pole VCB Fixed Type Vcb For High Voltage Switchgear Electrical Panel

These 11kV and 12kV vacuum circuit breakers protect electrical systems. They are three-pole units. They are the fixed type. They fit directly into high voltage switchgear panels. Their main job is stopping dangerous electrical faults. They do this fast. They stop the flow of electricity when problems happen. This prevents damage. It keeps people safe. It stops fires.

They are vital in many places. Use them in electrical substations. Substations manage power flow. Use them in industrial factories. Factories have heavy machinery needing protection. Use them in large commercial buildings. Buildings like hospitals or data centers need reliable power. Use them in power generation plants. Plants need to protect their equipment. Use them in mining operations. Mining has tough electrical demands. Use them for transformers. Transformers step voltage up or down. Use them for motors. Large motors need circuit protection. Use them for capacitor banks. Capacitor banks improve power quality. Use them for feeder circuits. Feeders distribute power. Use them in ring main units. These units supply power in loops. Use them in primary distribution networks. These networks carry power from substations.

Vacuum technology is key inside. It stops sparks when the breaker opens. Stopping sparks happens inside a sealed chamber. This method is very reliable. It needs little maintenance. These breakers last a long time. They handle many switching operations. They are compact. This saves space inside the switchgear panel. They are safe. They don’t use harmful gas like some older breakers. They operate quickly. Fast operation limits damage during a fault. They are designed for fixed mounting. This means they bolt permanently into the panel structure. They connect solidly to the busbars. Busbars carry the main power. They also connect to the outgoing cables. Operation can be manual. Operators use a handle locally. Operation can be remote. Signals come from a control room. Operation can be automatic. Protection relays detect faults and trigger the breaker. The contacts are rated for high voltage. They handle 11,000 or 12,000 volts. They interrupt high fault currents safely. This stops explosions. They provide isolation. This lets workers safely maintain downstream equipment. They are a standard protection device. Engineers choose them for performance and durability.

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 11KV 12KV Circuit Breaker Vacuum Circuit Breaker 3 Pole VCB Fixed Type Vcb For High Voltage Switchgear Electrical Panel, 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 11KV 12KV Circuit Breaker Vacuum Circuit Breaker 3 Pole VCB Fixed Type Vcb For High Voltage Switchgear Electrical Panel

What is an 11KV/12KV Vacuum Circuit Breaker?
It’s a high-voltage electrical switch. It stops the flow of electricity very fast during a problem, like a short circuit. It uses a vacuum inside its main contacts to do this. This vacuum is the best way to stop high currents safely at these voltage levels.

Where is this type of circuit breaker used?
You find these breakers inside electrical switchgear panels. These panels control and protect power distribution networks. They are common in substations, factories, large buildings, and mines. They handle the main power feeds.

How does the vacuum part work?
When the breaker needs to open, its contacts separate inside a sealed vacuum chamber. The vacuum has no air or gas to conduct electricity. This instantly stops the electric arc that forms when contacts open under load. Stopping the arc quickly protects the system.

What does “Fixed Type” mean?
Fixed type means the entire circuit breaker is bolted solidly onto the switchgear panel frame. It doesn’t move. You can’t take it out easily like a “draw-out” type breaker. Fixed types are simpler, cheaper, and take up less space inside the panel.

Why is it safe?
The vacuum interruption is very reliable. It stops faults incredibly fast. The breaker has strong insulation. It withstands the high system voltages. It has mechanisms to prevent accidental operation. These features keep people safe and protect expensive equipment from damage. Regular maintenance checks are still important.