What are the purpose of protective clothing ?

"Protective clothing suppliers is any clothing specifically designed, treated or fabricated to protect personnel from hazards that are caused by extreme environmental conditions, or a dangerous work environment. Some protective clothing may be designed to protect the workers from the working environment due to infection or pollution. Protective clothing or any protective equipment is often referred to as personal protective equipment."

The main reasons behind using these material and how these material protect our body from hazards are mentioned below :-

These material covers our body so we be protect inside a material wall.
Sun rays, fire, dust etc don't get in touch with our body.
It provide resistance according to the hazards. For example, for fire resistance Twaron, Nomex (a DuPont trademark), Coated nylon etc are used for protective clothing is used, for water resistance polythene kind of material used as protective clothing is used, for dust cotton nylon is used as protective clothing.
If these protective clothing are not use then we can suffer from a lots of body injury so its necessary to use protective clothing.

The purpose of AR clothing is to protect workers from electrical arc flash hazards. Arc flash is a sudden, violent release of heat and energy. It happens when there's a fault with electrical equipment.

Electricians often need to wear AR coveralls. They have the highest potential to be affected by arc flash hazards. AR clothing helps to protect these workers. The coveralls are built to resist ignition. They won't burn or catch fire.

FR: Flame-Resistant

FR clothing is designed to protect workers from fire-related hazards. FR clothing doesn't resist ignition like AR clothing does. FR will catch fire if exposed. But it's designed to self-extinguish. So it won't continue to burn after the initial event.