The term “air circuit breaker” refers to the type of insulating medium used in the switch. For example, a breaker that uses oil for insulation is called a “multi-oil breaker” or “low-oil breaker.” If air is used as the insulating medium (meaning it has a certain air gap), it is called an “air circuit breaker”, commonly referred to as an “air switch.” For an 1000kva generator, the arc-extinguishing medium used in the breaker is air.
🔧 Circuit Breaker Recommendation:
If the 1000kVA generator is operating at 380V, depending on the load type, you can choose a 1600A or 2000A frame-type air circuit breaker. It is recommended to use three 185mm² cables. If the cables are too thick, installation becomes more difficult. In engineering applications, 185mm² cables are commonly chosen due to their good cost-performance ratio.
📏 Cable Specification Format Example:
YJV-3×185+2×95
“YJV” refers to the cable model.
“3×185” means there are three cores, each with a cross-sectional area of 185mm².
“+2×95” means an additional two cores with a cross-section of 95mm².
Together, this forms one complete YJV cable.
⚠️ Safety & Quality Tips for Purchasing Cables
Cables must comply with national safety standards, or they may pose serious safety risks.
When choosing cables:
Inspect the outer sheath for a clear brand logo, manufacturer name, contact details, model number, and production date.
These details help ensure the cable is authentic and safe for long-term use.
✔ Visual Inspection:
The appearance of the wire is an important indicator of quality:
Check whether the cable surface is smooth and uniform.
Ensure the insulation layer is free from damage or abrasion.
If the cable shows signs of these issues, do not use it. Instead, it should be repaired or replaced immediately to avoid electrical hazards.
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