Arc Flash Suit Selector

The National Fire Protection Association (NFPA) uses four Arc Flash PPE Categories to classify ranges of arc flash hazards, and the corresponding requirements for PPE. The categories are one of the methods used in the current NFPA 70E standard to inform workers about the protection they need while working on energized equipment.

4 CAL

PPE Category 1 covers a minimum of 4 calories in which Arc Rated PPE is required.

8 CAL

PPE Category 2 covers a minimum of 8 calories in which Arc Rated PPE is required.


25 CAL

PPE Category 3 covers a minimum of 25 calories in which Arc Rated PPE is required.


140 CAL

PPE Category 4 covers a minimum of 40 calories in which Arc Rated PPE is required.

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