800 Amp 4 Pole Acb Air Circuit Breaker

The 800 amp 4 pole acb air circuit breaker has a 800A rated current and 4 poles, which is designed for low voltage AC 50 or 60 Hz electrical network. The main function of the 800 amp 4 pole acb air circuit breaker can be show as the below:

Basic Protection Functions:

1. Overload Protection: it monitors for abnormal current increases and trips the circuit to prevent equipment from overheating or being damaged.

2. Short Circuit Protection: it trips instantly within 0.01 to 0.02 seconds during a short circuit, interrupting fault currents up to 6300A.

3. Undervoltage Protection: it automatically disconnects the circuit when the voltage drops below the preset threshold, preventing abnormal operation of equipment.

Selective Protection Functions:

1. Over current Protection: it implements a three stage response to ensure that only the faulted circuit is disconnected. The name of three stage response is showed as the below:

1. long time delay (0.1 s to 30 s): Handling overload or slight over current;

2. short time delay (0.05 s to 0.5 s): Handling short circuits;

3. instantaneous (lower than 0.05 s): Handling serious short circuit, which need to cut off immediately.

2. Ground Fault Protection: it detects leakage currents to earth, helping to prevent electric shock and drop down the risk of electrical fires.

Production Parameter:

Product FAQ:

Q: What does “4 Pole” mean in the 800 amp 4 pole acb air circuit breaker?

A: A 4 pole breaker has four separate current carrying poles, one for each phase and one for the neutral. This design ensures complete protection of all conductors in a three phase system, including the neutral, which is important for systems with unbalanced loads.

Q: Can the 800 amp 4 pole acb air circuit breaker be used in smart or automated systems?

A: Yes. Many 800A ACBs support intelligent trip units and can integrate with monitoring or control systems using standard communication protocols, allowing remote operation, status monitoring, and data logging.

Q: What are the advantages to use a 800 amp 4 pole acb air circuit breaker compared to other low voltage 800 A 4P breakers?

A: 800 amp 4 pole acb air circuit breakers offer high breaking capacity, reliable protection, adjustable trip settings, and robust mechanical design. The draw out type allows easy maintenance, replacement, and inspection without disturbing the main busbars or power connections.