The difference between circuit breaker and air open

Create Date: 2024-8-30 12:03:23|Source: Eaton/Eaton

1. The air switch generally plays the role of "isolation" and "protection device" in the small current circuit, which is also called automatic switch and air circuit breaker.

2. The circuit breaker has a good arc extinguishing ability, and will automatically trip in the case of short circuit and high current; In high-voltage and high-current circuits, it is often used as an operating appliance for power outage, power transmission, and switching on and off loads.

3. The difference between voltage levels: Generally, the voltage level used for air switches is below 500V, while circuit breakers can usually be used for various voltage levels above 220V.

4. The ability to block the current is different: the load and short-circuit current that the general circuit breaker can bear are greater.

5. The difference between the arc extinguishing medium and the method: the arc extinguishing medium and method of the circuit breaker not only include air circuit breaker, but also vacuum circuit breaker, multi-oil circuit breaker, less oil circuit breaker, sulfur hexafluoride circuit breaker, etc.

6. The difference between supporting equipment: Generally, compared with the empty opening, the measurement of the circuit breaker, the equipment supporting the logic and the executive department is more complicated.

7. There are various models of circuit breakers such as vacuum circuit breakers and SF6 circuit breakers, its breaking current is larger than that of ordinary air switches, and the breaking capacity is also larger, vacuum circuit breakers are generally used in 6KV systems, SF6 circuit breakers are used in 500KV substations, both of which use DC 110V as the control power supply, which will be triggered by the control signal, and the general air opening is used in the 380/220 system, which is equivalent to the knife switch.

The difference between circuit breaker and air open

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