"Circuit breaker" and "air switch" are often used interchangeably in everyday language, but from a strictly technical and application standpoint, the two terms overlap yet are not identical. Simply put, an air switch is the most common and widely used type of circuit breaker.
Consider it like the relationship between "vehicles" and "cars": a car is a type of vehicle, but not all vehicles are cars.
• circuit breaker breaker is an umbrella term, such as "vehicle."
· An air switch is a specific type within that category, like "sedans."
Core Difference: Conceptual scope varies.
1.Circuit Breaker
Definition: An circuit conditions protection device capable of generating, carrying, and disconnecting current under normal circuit conditions and automatically interrupting the circuit under specified abnormal conditions,such as short circuit or overload.
General Term / Broad Category: is a broad category. There are several types according to their arc extinguishing medium (the substance used to extinguish the arc produced when the circuit is interrupted).
Common types:
Air Breaker: The quenching medium is air, which is commonly referred to as the "air switch."
Vacuum circuit breaker: The medium is vacuum and is often used in high voltage systems.
Oil circuit breaker: the medium is insulating oil, historically used in high voltage systems.
SF6 Circuit Breaker: The medium is SF6 gas and is used in high and ultra-high voltage systems.
2. Air switch
Definition: Full name is "air circuit breaker," a particular type of circuit breaker. It is so named because its contacts work in air, using air as a quenching medium.
Sub-category / specific term: Usually refers to switches most commonly used in low-voltage distribution networks (e.g. distribution boxes for residential and commercial buildings).
Abstracts
The air switch is a circuit breaker. In low-voltage domestic devices, they basically mean the same equipment. As a result, "air switches" have become synonymous with "low-voltage circuit breakers in households."
In a word: when discussing appliance work, it's more accurate and common to say "air switch." The generic term "circuit breaker" is used more rigorously in the broader or more specialized context of electrical engineering.