Voltage range of circuit breaker

The voltage range of a circuit breaker depends on the type and rating of the breaker. Here are some general guidelines:

Low-Voltage Circuit Breakers (LVCBs)

• Typical voltage range: 120/240 VAC (single-phase) or 208/240 VAC (three-phase)
• Common applications: residential, commercial, and industrial power distribution systems

Medium-Voltage Circuit Breakers (MVCBs)

• Typical voltage range: 1,000 to 35,000 VAC (three-phase)
• Common applications: industrial power distribution systems, commercial buildings, and utility substations

High-Voltage Circuit Breakers (HVCBs)

• Typical voltage range: 35,000 to 765,000 VAC (three-phase)
• Common applications: large industrial power distribution systems, transmission and distribution systems, and utility substations

Extra-High-Voltage Circuit Breakers (EHVCBs)

• Typical voltage range: 765,000 to 1,200,000 VAC (three-phase)
• Common applications: high-voltage transmission systems, large industrial power distribution systems, and utility substations

Specialty Circuit Breakers

• Some circuit breakers are designed for specific applications, such as:
  • Surge arresters: designed to protect against voltage surges and spikes
  • Arc fault circuit breakers: designed to detect and interrupt arc faults in electrical circuits
  • Ground fault circuit breakers: designed to detect and interrupt ground faults in electrical circuits
  • Molded case circuit breakers: designed for use in industrial and commercial applications

When selecting a circuit breaker, it's essential to consider the following factors:

1. Voltage rating: Ensure the breaker is rated for the maximum voltage of the circuit.
2. Current rating: Ensure the breaker is rated for the maximum current of the circuit.
3. Power rating: Ensure the breaker is rated for the maximum power of the circuit.
4. Application: Consider the specific application and the type of load being protected.
5. Environmental conditions: Consider the environmental conditions in which the breaker will be used, such as temperature, humidity, and vibration.

It's always recommended to consult the manufacturer's specifications and guidelines for the specific circuit breaker being used.