In high-risk electrical environments, protecting workers from arc flash incidents is a non-negotiable safety priority. The 40 Cal Arc Flash Coverall is among the highest-rated Personal Protective Equipment (PPE) designed to offer Category 4 protection, safeguarding wearers from the extreme thermal energy released during arc faults.
What Is a 40 Cal Arc Flash Coverall?
A 40 Cal/cm² (calories per square centimeter) arc flash coverall refers to the garment’s ATPV (Arc Thermal Performance Value). This measurement tells you how much incident energy the clothing can withstand before there’s a 50% chance of causing a second-degree burn. The 40 Cal level sits at the top tier of arc flash protection, generally required for environments with extreme exposure to electrical energy, such as electrical switchyards, substations, power plants, and heavy industrial plants.
Technical Specifications
| Feature | Specification |
| ATPV Rating | 40 Cal/cm² |
| NFPA 70E Compliance | Yes |
| Fabric | Inherently FR (Nomex, Modacrylic blends, etc.) |
| Color | Navy, Orange, Khaki (custom options available) |
| Design Options | One-piece coverall or two-piece (jacket & bib) |
| Additional Protection | Optional hood, face shield, rubber gloves |
Why Is 40 Cal PPE Important?
Working near high-voltage equipment exposes workers to dangerous arc flash events. A 40 Cal garment ensures maximum protection in such conditions. As per NFPA 70E, any task with an incident energy above 25 Cal requires Category 4 PPE. Not wearing this can result in fatal burns or long-term injuries.
How Much Does It Cost?
The price of a 40 Cal Arc Flash Coverall can vary depending on material, design (one-piece vs two-piece), and accessories.
- Standard 40 Cal Coverall (One-Piece): Starting from $250–$400 per set
- Two-Piece 40 Cal Jacket + Bib Set: $300–$500
- Full PPE Kit (Coverall + Hood + Gloves): $600–$900
Harbor365 Advantage
Harbor365’s 40 Cal Arc Flash Coveralls are manufactured using high-performance, certified FR fabrics with reinforced stitching and ergonomic cuts. Our USP includes:
- Full compliance with NFPA 70E, IEC 61482-2, and ASTM F1506
- Bulk order capability for global markets including UAE, Saudi Arabia, Qatar, and the US
- Customization for color, branding, and sizes
- Fast lead times and shipping options
- Backed by a highly rated customer support and technical team
Final Thoughts
For industries working in proximity to high-voltage equipment, investing in 40 Cal Arc Flash Coveralls is not just smart—it’s mandatory. With Harbor365, you don’t just get protection, you get reliability, customization, and international standards in every stitch.