ABB VD4/P-12.06.32 Medium Voltage Vacuum Circuit Breaker

1. Product Overview

The ABB VD4/P‑12.06.32 Medium Voltage Vacuum Circuit Breaker (VCB) is a 12 kV class vacuum circuit breaker designed for medium-voltage power distribution systems.
It provides reliable protection against overload, short circuit, and undervoltage, and is suitable for switching, sectionalizing, and remote control of power circuits. The VD4/P series is known for high reliability, low maintenance, and long service life, making it suitable for industrial, energy, and infrastructure applications.

2. Technical Specifications

• Model: VD4/P‑12.06.32

• Type: Medium Voltage Vacuum Circuit Breaker (VCB)

• Rated Voltage: 12 kV

• Rated Current: 630 A

• Rated Short-Circuit Breaking Capacity (Icu): 31.5 kA

• Rated Short-Time Withstand Current (Ics): 31.5 kA / 3 s

• Rated Peak Withstand Current (Icm): approx. 80 kA

• Rated Impulse Withstand Voltage (Uimp): 75 kV

• Operating Sequence: O‑0.3 s‑CO‑15 s‑CO

• Interruption Technology: Vacuum, fast arc quenching, low contact wear

• Number of Poles: 3

• Control Supply: 110 V DC (mechanical/electrical operation, other voltages optional)

• Mechanical Life: ≥ 10,000 operations

• Electrical Life: ≥ 5,000 operations

• Mounting: Fixed installation in switchgear cabinets

• Ambient Temperature: ‑25 ℃ to +55 ℃

• Protection Class: IP54

3. Key Advantages & Features

1. Vacuum Interruption Technology
   Fast arc extinction, no gas contamination, long contact life, low maintenance.

2. High Breaking Capacity
   31.5 kA short-circuit breaking capacity for safe operation under high fault currents.

3. Fast Operating Mechanism
   Advanced stored-energy mechanism enables rapid and stable open/close operation.

4. Modular Design
   Optional auxiliary contacts, trip units, shunt releases, and mechanical interlocks for flexible control and monitoring.

5. Low Maintenance
   Vacuum interrupters do not require replacement of medium, reducing on-site maintenance.

6. Wide Environmental Tolerance
   Reliable operation in dusty, humid, or standard industrial environments.

4. Typical Applications

• Medium-voltage distribution in industrial plants

• Sectioning and protection of power distribution networks

• Medium-voltage circuits in power plants and substations

• Oil, petrochemical, and energy industries

• Critical infrastructure like data centers and hospitals

• Wind power and renewable energy integration systems

5. Installation & Usage Notes

1. Electrical Compatibility
   Ensure rated voltage, current, and breaking capacity match system requirements to avoid malfunction or damage.

2. Control Power Supply
   Provide stable and reliable supply to the operating mechanism and ensure proper wiring to avoid interference.

3. Grounding & Wiring
   Proper grounding and secure connections for main and control circuits are required.

4. Environmental Conditions
   Avoid strong corrosive gases, excessive humidity, or water exposure; install in enclosed switchgear.

5. Commissioning & Calibration
   Perform mechanical operation tests, insulation tests, and operational characteristic verification after installation.

6. Routine Maintenance
   Periodically inspect contacts, operating mechanism, and control circuits to ensure reliable long-term operation.

The structure and details of the product：

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