48to 50flame resistant and arc flash clothing

Arc Flash Clothing, Difference Between Arc Rated and Flame ...

The terminology referencing personal protective equipment (PPE) was changed in 2012 by NFPA. What had previously been referred to as FR (flame resistant) clothing is now called Arc Rated or AR. The reason for the change is that all clothing with an arc rating (AR) is flame resistant (FR) but not all FR clothing has an Arc...