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HRC / Hazard Risk Category

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Per NFPA 70E, the Standard for Electrical Safety in the Workplace, a hazard risk category (HRC) represents the potential level of risk or danger involved in completing a job responsibility. These categories are dependent on the the incident energy (measured in cal/cm²), and help to determine the appropriate flame resistant clothing (FRC) needed to safely perform the task at hand.

Hazard risk categories range from HRC 0 (least potential risk) to HRC 4 (highest potential risk). The higher the HRC, the higher the cal/cm² rating must be to ensure protection from arc flash hazards. For instance, an HRC Level 1 garment must have a minimum of 4 cal/cm², whereas an HRC 4 garment must meet a minimum of 40 cal/cm².

For more information on hazard risk categories and the electrical safety standard, see our article What is NFPA 70E? and view NFPA70E updates.

Shop the HRC clothing level that meets your needs: HRC 1, HRC 2, HRC 3, HRC 4
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