To monitor over voltage
Protection and control
Protection and monitor heat
Monitor under voltage
Insulating vessel
Arc shield
Arc splitters
Moving Contact
Provide insulation
Quenching arc
Providing cooling for contacts
Act as lubrication
Soda flouride circuit breaker
Sulphur hexaflouride circuit breaker
Sodium flouride circuit breaker
Sodium bicarbonate circuit breaker
Oil
Water
Nitrogen
Air