The Portwest FR402 WX3 Modaflame Work FR Service Trousers are multi-norm protective trousers for work where flame, heat, electric arc, static and light chemical splash are all risks. The flame resistance is inherent to the fibre, so it stays in place through washing.
Stretch panels in key movement areas, a stretch crotch gusset and pre-bent knees make kneeling, climbing and bending easier. Eight pockets, including a cargo pocket, a rule pocket and two-tier knee pad pockets, keep tools and kit close to hand.
Key features
- Inherent flame resistant fabric protects against radiant, convective and contact heat
- Contrast stretch panelling in key movement areas gives flexibility where you bend and reach
- Stretch crotch gusset and pre-bent knees give freedom of movement and reduce stress on seams
- Two-tier knee pad pockets let you set knee pads at one of two heights
- Eight pockets, including an easy-access cargo pocket and a rule pocket, for secure storage
- Side elasticated waist adjusts to your movement through the day
- Heat-applied segmented reflective tape adds visibility and flexes with the fabric
- Non-magnetic, nickel and ferrous free trims suit sites with metal detectors; suitable for ATEX environments
- UPF 40+ fabric blocks 98% of UV rays when working outdoors
- Extendable leg length from 31″ to 33″, with bartacks at all stress points for durability
Materials and performance
Shell: Modaflame Work, 60% Modacrylic, 39% Cotton, 1% Carbon Fibre, 280g. Contrast: Modaflame Work Stretch, 60% Modacrylic, 35% Cotton, 4% Elastane, 1% Carbon Fibre.
Standards and protection
Certified to EN ISO 11612 (A1+A2, B1, C1, F1), EN ISO 11611 Class 1 (A1+A2), EN 1149-5, EN 61482-2 with EN 61482-1-1 (ELIM 6.4 CAL/CM², EBT 6.8 CAL/CM²), EN 61482-2 with EN 61482-1-2 APC 1 and EN 13034 Type 6. Classed as CE Category III PPE.
Fit and sizing
Regular fit. See our Portwest Sizing Guide for detailed information.
Knee pad pockets
The two-tier knee pad pockets give two positioning options, so you can set your knee pads at the height that suits your build and the task. Combined with the pre-bent knees, this helps keep the pads in place when you kneel.
Care
- Machine wash at 60°C
- Do not bleach
- Tumble dry at low temperature
- Iron at a medium temperature (max 150°C)
- Do not dry clean
Add your logo
If you’d like to add your logo to the Portwest FR402 WX3 Modaflame Work FR Service Trousers, please contact us.

































