The Fristads Flamestat 4176 ATHS is an arc-rated hi-vis jacket for substation and utility work. It is approved to EN 61482-1-2 Class 1 with an EBT of 10.5 cal/cm² under EN 61482-1-1, and adds flame, anti-static, chemical splash and hi-vis protection. Modacrylic and cotton blend, 300 g/m², sizes XS to 3XL.
Fristads Flamestat Hi-Vis Jacket 4176 ATHS
The Fristads 4176 ATHS is an arc-rated, high-visibility jacket from the Flamestat range, suited to substation, switchroom and utility work where arc flash, flame, electrostatic and visibility risks combine. It is approved to EN 61482-1-2 Class 1 (box test) and EN 61482-1-1 with an EBT of 10.5 cal/cm², covering work where the assessed incident energy sits within that figure. For a plain explanation of the ratings, see what is arc flash.
Certified ratings and specifications
| Standard | Approval / result |
|---|---|
| EN 61482-1-2 (box test) | Class 1 |
| EN 61482-1-1 (open arc) | EBT 10.5 cal/cm², HAF 81.4% |
| EN ISO 11612 (heat and flame) | A1 B1 C1 F1 |
| EN 1149-5 (electrostatic) | Approved |
| EN 13034 (chemical splash) | Type PB [6] |
| EN ISO 20471 (hi-vis) | Class 1 sizes XS-S, Class 2 sizes M-3XL |
| Material | 45% modacrylic, 35% cotton, 18% polyamide, 2% antistatic fibre |
| Fabric weight | 300 g/m² |
| Colour | Hi-Vis Yellow/Navy |
| Sizes | XS to 3XL |
The jacket is also laundry-tested to ISO 15797 and OEKO-TEX certified.
Practical features
- Dirt, oil and water-repellent fabric finish.
- Front placket with zip to the collar top and concealed snap fastening.
- Two bellowed chest pockets, one with inside D-ring and pen strap, one with radio-antenna opening.
- Zipped chest pocket plus two front pockets with concealed snaps.
- Inside button pocket and phone pocket with earpiece loop.
- Reflective shoulder detailing and tape around the sleeves.
- Adjustable waist and cuffs, with an extended back.
Fristads is one of the arc-rated workwear ranges in our arc flash protection catalogue, and our guide to selecting appropriate arc flash PPE explains how to match garment ratings to your incident-energy labels.
FAQs
What arc flash rating does this jacket carry?
It is approved to EN 61482-1-2 Class 1 (box test) and EN 61482-1-1 with an EBT of 10.5 cal/cm² and a HAF of 81.4%. Match the garment to the worst incident-energy value shown on your switchroom label or arc flash study.
Does the hi-vis class vary by size?
Yes. Under EN ISO 20471 it achieves Class 1 in sizes XS to S and Class 2 in sizes M to 3XL, as larger sizes carry more retro-reflective material. If your site requires Class 2 visibility, specify size M or above.
Not exactly what you are looking for? Contact us with your exact requirements, we’re happy to help.



