Fristads Flamestat trousers 2144 ATHS in dark navy. Arc-rated to Class 1 under EN 61482-1-2, with an open-arc EBT of 10,5 cal/cm² (EN 61482-1-1). Also EN ISO 11612 flame, EN 1149-5 anti-static and EN 13034 Type PB [6] chemical protection. For authorised persons and contractors around live switchgear.
Fristads Flamestat Trousers 2144 ATHS, Class 1 Arc-Rated
The Fristads Flamestat 2144 ATHS is an arc-rated work trouser in dark navy, approved to EN 61482-1-2 Class 1 (box test) with an open-arc result of EBT 10,5 cal/cm² under EN 61482-1-1. It also carries EN ISO 11612 A1 B1 C1 F1 flame protection, EN 1149-5 anti-static properties and EN 13034 Type PB [6] limited chemical splash protection. Serious kit, not just a pair of work trousers.
When Class 1 is enough
These are for authorised persons, utility engineers and contractors working around live switchgear. Unsure how Class 1 and open-arc values relate to your site’s incident energy? Our arc flash information page explains the test methods in plain terms. Treat 10,5 cal/cm² as the figure to check against your study.
Pockets and fit
- Dirt, oil and water repellent fabric
- Two front pockets, two back pockets with flaps
- Leg pocket, phone pocket and ruler pocket
- D-ring at waistband, detachable ID holder
- Pre-shaped knees with knee pad pockets
- Adjustable 5 cm hem, reinforced crotch seam
- OEKO-TEX certified, leasing laundry-tested to ISO 15797
Specifications
| Detail | Value |
|---|---|
| Article number | 121354 |
| Arc rating | EN 61482-1-2 Class 1; EN 61482-1-1 EBT 10,5 cal/cm², HAF 81,4 % |
| Other standards | EN ISO 11612 A1 B1 C1 F1; EN 1149-5; EN 13034 Type PB [6] |
| Material | 45% modacrylic, 35% cotton, 18% polyamide, 2% anti-static fibre |
| Weight | 300 g/m² |
| Colour | 540 Dark Navy |
| Sizes | Regular C44 to C62; Short D84 to D116 |
Pairing for Class 2
The datasheet lists certified garment combinations that reach EN 61482-1-2 Class 2, so trousers alone may not meet your study. Matching jackets live in our arc flash jackets and trousers category, within the wider arc flash protection range.
FAQs
What does Class 1 mean on these trousers?
Class 1 is the box-test rating under EN 61482-1-2, the European method for proving arc-rated clothing. This garment also has an open-arc value of EBT 10,5 cal/cm² (EN 61482-1-1). Compare that figure with your site’s incident-energy study.
Can they be industrially laundered?
Yes. The datasheet confirms leasing laundry-testing to ISO 15797, so the protection holds under industrial washing when care instructions are followed. Avoid aggressive home bleaching, it degrades protection without visible signs.
Not exactly what you are looking for? Contact us with your exact requirements, we’re happy to help.



