1. KYN Series: K stands for ky, Y stands for portable, and N stands for indoor. Examples include the KYN28, KNY10, and KYN24, where 28, 24, and 10 represent the design serial numbers. The circuit breakers in this type of switchgear can be removed from the cabinet. The Kyn28-12 is the most widely used model on the market.
2. XGN Series: X stands for enclosure type, G for fixed type, and N stands for indoor. Examples include the XGN2, XGN66, and XGN40, where 2, 66, and 40 represent the design serial numbers. The circuit breakers in this type of switchgear are fixed inside the cabinet.
3. HXGN Series: H stands for ring network type, X for enclosure type, G for fixed type, and N for indoor. Examples include the HXGN17 and HXGN15, where 15 and 17 represent the design serial numbers. The circuit breakers in this type of switchgear use load switches and are suitable only for low currents.
4. GG1A, GR, etc. are still available. Due to the lack of protection level, they are rarely used now.