What Is The Difference Between Ar And Fr Clothing?

All arc-resistant protective clothing (AR) is flame-resistant, but not all flame-resistant protective clothing (FR) is arc resistant because not all flame-resistant fabrics are tested for arc flash exposure. In short, if your FR garment is arc rated, it is arc rated.
A detailed introduction to FR clothing and AR clothing:
FR stands for Flame Retardant. The main purpose of FR clothing is to resist ignition. FR apparel is designed to protect employees from fire-related hazards such as flash fires, flames, and embers. For an article of apparel to be classified as flame retardant, the fabric must resist ignition and/or rapid self-extinguishing flames to protect the wearer. FR garments are not fire resistant, which means they will catch fire if exposed to fire. Although, FR is designed to be self-extinguishing and will not continue to burn once ignited. Flame-retardant clothing can help reduce the extent of burns.
AR stands for Arc-Rated and all arc-rated garments are flame retardant. Arc-rated garments are exposed to a series of arc flashes to determine how much energy the fabric can block in 50% of the cases before causing 2nd degree burns to the wearer. More simply, the arc rating measures the insulation of an FR fabric against arc flashes. The result of this test is expressed in calories and is called the Arc Thermal Performance Value (ATPV). You can tell if your clothing is Arc rated by checking the inner label on the clothing.
If you already understand these two types of safety workwear, you can choose the right one according to your work.