SF1 is for 3 polar OG switch internal use. These are used for protection and switching in industry, public and commercial energy distribution between 1 – 40.5 kV. SF1 switch equipped with automatic compressing technique, uses SF6 gas during current switching. SF1 has three different versions;

Horizontal type suitable for use in LSC2A metal enclosed cells
Nominal Voltage : Up to 40.5 kV
Nominal Current : Up to 1250 A
Short Circuit Switching Current : Up to 25 kA