What is BKZC(R)-12? Indoor high-voltage vacuum circuit breaker

BKZC(R)-12 Indoor vacuum contactor 12KV (Drawout)

BKZC(R)-12 can be broken down as follows:

• B: circuit breaker

• K: Vacuum

• Z: Indoor Type

• C: Drawout Type (or "Truck" Type)

• (R): Equipped with an intelligent, microprocessor-based protection relay (The "R" often stands for "Intelligent" or "Microprocessor").

• -12: Rated voltage of 12 kilovolts (kV)

Key Characteristics and Features:

1. Rated Voltage: 12 kV

2. Technology: Vacuum Interruption. The arc extinction medium is a vacuum, which is maintenance-free, environmentally friendly, and has a long lifespan.

3. Installation: Designed for indoor use, typically in switchgear panels or substations.

4. Mounting Style: Drawout type. This means the breaker is mounted on a removable truck, allowing for easy isolation from the power circuit, maintenance, testing, and quick replacement without needing to re-wire the entire panel.

5. Intelligent Protection: The "(R)" version is integrated with a digital protective relay. This relay provides advanced functions such as:

   • Overcurrent protection

   • Short-circuit (instantaneous) protection

   • Ground fault protection

   • Metering (displaying current, voltage, etc.)

   • Event recording and communication capabilities (e.g., RS485, Modbus)

Typical Applications:

• Power distribution in industrial plants

• Commercial buildings

• Mining operations

• Internal power distribution networks of utility substations

In summary, the BKZC(R)-12 is a versatile, intelligent, and reliable 12kV indoor vacuum circuit breaker, designed for safe and efficient control and protection of medium-voltage electrical circuits.