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👖FR412 - Arc & Flame Resistant Work Trousers – Bizflame Plus
👖FR412 - Arc & Flame Resistant Work Trousers – Bizflame Plus
👖FR412 - Arc & Flame Resistant Work Trousers – Bizflame Plus
👖FR412 - Arc & Flame Resistant Work Trousers – Bizflame Plus
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👖FR412 - Arc & Flame Resistant Work Trousers – Bizflame Plus

€32,95

Orange
S
Vendor: Portwest Categories: Multi-standard, Multi-standard Flame and Arc Protection Trousers, 🔥Flame Retardant & Multi-Standard
Description

EN ISO 11612 IEC 61482 Cl. 1 UPF 40+ CE CAT III FR412

FR412 Work Trousers
Bizflame Plus
Flame & Arc Protection

These lightweight work trousers, made from exclusive Bizflame Plus fabric (99% cotton, 1% carbon fiber), combine flame protection, arc protection, antistatic properties, and UV protection in one comfortable garment. Featuring adjustable leg length, multi-functional pockets, and washable at 60 °C.

Bizflame Plus – 99% cotton with 1% carbon fiber: comfortable to wear like regular workwear, yet permanently flame-retardant and antistatic – with no wash-out effect.
Buy Now Specifications
Product data at a glance
ModelFR412 Work Trousers
ManufacturerPortwest
TypeFlame-retardant work trousers
MaterialBizflame Plus: 99% Cotton, 1% Carbon Fiber
Weight210 g/m²
Flame ProtectionEN ISO 11612 A1, B1, C1, E2, F1
Arc ProtectionIEC 61482-1-2 Class 1 · ELIM 9 cal/cm²
Welding ProtectionEN ISO 11611 Cl. 1 A1+A2
AntistaticEN 1149-5
UV ProtectionUPF 40+ – blocks 98% UV
CertificationCE CAT III
WashingWashable at 60 °C
ColorsOrange · Navy
SizesS – 3XL
Price€ 32.95
EN ISO 11612 Flame Protection
IEC 61482 Arc Class 1
EN 1149-5 Antistatic
UPF 40+ UV Protection
CE CAT III
EN ISO 11612 A1, B1, C1, E2, F1 – Flame & Heat Protection

IEC 61482-1-2 Class 1 · ELIM 9 cal/cm² Arc Protection

EN ISO 11611 Class 1 A1+A2 – Welding Protection

EN 1149-5 Antistatic – for ATEX areas

CE CAT III Highest PPE protection category
Product Advantages

Multi-Standard Protection, Comfort
and Thoughtful Functionality

Bizflame Plus – Flame Retardant

99% cotton with 1% woven carbon fiber provides permanent flame protection according to EN ISO 11612 A1, B1, C1, E2, F1 and antistatic properties according to EN 1149-5 – without wash-out effect and with the comfort of natural cotton.

Arc Protection Class 1

Certified according to IEC 61482-1-2 Class 1 with an ELIM value of 9 cal/cm² (APC1) – reliable protection against electric arcs in electrical engineering, power supply, and switchgear construction.

Welding Protection EN ISO 11611

Class 1 A1+A2 according to EN ISO 11611 – protection against welding spatter, UV radiation, and minor heat exposure during welding. This makes the trousers also suitable for welders and metalworkers.

UPF 40+ UV Protection

The Bizflame Plus fabric blocks 98% of UV radiation – reliable protection for outdoor activities, on construction sites, and for outdoor work during long shifts.

Adjustable Leg Length

The adjustable hem allows for individual leg length adjustment – an optimal fit for every body size without the need for alterations. Elastic waistband at the side for maximum comfort and freedom of movement.

Multifunctional Pockets

Cargo pockets on the leg, a rule pocket, and 2 back pockets offer ample storage space for tools, measuring devices, and personal items – everything within reach for efficient daily work.


Technical Data

Material &
Specification

The Portwest FR412 Flame Retardant Work Trousers combine modern design with certified protection for demanding work environments. The lightweight Bizflame Plus fabric offers reliable flame protection, antistatic properties, and arc flash protection – all with high wearing comfort and optimal freedom of movement.

Thanks to the high cotton content, the trousers feel pleasant on the skin and remain comfortable even during long shifts. The integrated carbon fiber improves antistatic properties and increases material stability. Due to the lightweight 210 g/m² fabric, the FR412 is ideal for warmer work environments or as a comfortable year-round solution.

Particularly practical are the multifunctional pocket solutions, the adjustable leg length, and the elastic side waistband for more freedom of movement in daily work. The trousers are CE-CAT III certified and meet several international protection standards for industry, power supply, welding, and electro-technical applications.

Model Name FR412 Work Trousers Bizflame Plus
Manufacturer Portwest
Fabric Bizflame Plus
Composition 99% Cotton, 1% Carbon Fiber
Fabric Weight 210 g/m²
Flame Protection EN ISO 11612 A1, B1, C1, E2, F1
Arc Protection IEC 61482-2 / IEC 61482-1-2 Class 1
ELIM Value 9 cal/cm² (APC1)
Welding Protection EN ISO 11611 Class 1 A1+A2
Antistatic EN 1149-5
UV Protection UPF 40+ – 98% UV Blocking
Certification CE CAT III
Washing Washable at 60 °C
Waistband Side Elastic
Hem Adjustable Leg Length
Pockets Cargo Pockets, Rule Pocket, 2 Back Pockets
Colors Orange · Navy
Sizes S – 3XL
Price € 32.95
Certifications

Standards & Certificates
at a Glance


EN ISO 11612 A1, B1, C1, E2, F1
Protection against Heat & Flames – multi-classified, permanent without wash-out effect

IEC 61482-1-2 Class 1
Arc Flash Protection – ELIM 9 cal/cm² (APC1) for electrical engineering and power supply

EN ISO 11611 Class 1 A1+A2
Welding Protection – protection against welding spatter and UV radiation during welding

EN 1149-5 Antistatic
Electrostatic properties due to carbon fiber – suitable for ATEX areas

UPF 40+ Classified
Blocks 98% of UV rays for reliable sun protection

CE CAT III
Highest PPE protection category according to EU Regulation 2016/425
Care & Cleaning

Care Instructions

The Bizflame Plus fabric of the FR412 is particularly easy to care for and washable at 60 °C – an important advantage over many other flame-retardant trousers. The flame-retardant and antistatic properties due to the carbon fiber are permanently maintained. Do not use fabric softeners.

🌡️Washable at 60 °C – particularly hygienic
🚫No fabric softeners – affects flame protection and antistatic properties
🔥Iron according to manufacturer's recommendations
⚡Antistatic properties permanently maintained by carbon fiber – no wash-out effect
✅Flame protection remains throughout the entire service life
Available Sizes
S
M
L
XL
XXL
3XL

Size chart available upon request.

Available Colors

Orange

Navy

Both colors meet all multi-standard certifications. The Navy version is ideal as a matching pair of trousers for the MV25 high-visibility jacket. Company embroidery available upon request.

Applications

Ideal for areas with fire,
arc, and heat hazards

Electrical Engineering
Energy Supply
Switchgear Construction
Oil & Gas Industry
Petrochemicals
ATEX Areas
Welding & Metalworking
Chemical Industry
Offshore Platforms
Road & Civil Engineering

Why the FR412
is the right choice

For everyone who needs lightweight, comfortable multi-standard work trousers with permanent flame protection, arc protection, and antistatic properties – at an exceptionally attractive price of €32.95.

Four standards in one pair of trousers – EN ISO 11612, IEC 61482, EN ISO 11611 and EN 1149-5: comprehensive multi-standard protection for demanding work environments.
Bizflame Plus – Comfort like normal cotton – 99% cotton with 1% carbon fibre: as comfortable to wear as regular workwear, permanently flame-retardant without wash-out effect.
Washable at 60 °C – easier to care for than many flame-retardant trousers. High washing temperature for hygienic cleaning without loss of protective effect.
Adjustable leg length & elastic waistband – individual fit for every height without tailoring, maximum freedom of movement in daily work.
Frequently Asked Questions

FAQ

What is Bizflame Plus fabric and what makes it special?
Bizflame Plus is a fabric developed by Portwest, made from 99% cotton and 1% interwoven carbon fibre. The cotton ensures a comfortable, natural feel, similar to ordinary workwear. The carbon fibre provides permanent antistatic properties and supports flame protection – both without a wash-out effect. The fabric is also washable at 60 °C, making it more hygienic than many alternative flame-retardant fabrics.
What do IEC 61482 Class 1 and ELIM 9 cal/cm² mean?
IEC 61482 is the international standard for arc flash protection. Class 1 indicates protection against weaker electric arcs. The ELIM value (Incident Energy Limit) of 9 cal/cm² specifies how much arc energy the material can safely withstand. APC1 (Arc Protection Class 1) corresponds to the European classification system. This certification makes the FR412 ideal for electricians, switchgear manufacturers, and energy suppliers.
Is the FR412 suitable for ATEX areas?
Yes. The carbon fibre in the Bizflame Plus fabric provides permanent antistatic properties according to EN 1149-5. This makes the FR412 fully suitable for use in explosive ATEX areas where electrostatic charges pose a risk.
Why can the trousers be washed at 60 °C?
Since the flame protection is intrinsically embedded in the carbon fibre and cotton structure of the Bizflame Plus fabric – and not through a chemical finish – it withstands higher washing temperatures. 60 °C allows for more hygienic cleaning, for example, for heavy soiling in industry, without impairing the protective effect.
How does the adjustable leg length work?
The adjustable hem of the FR412 allows for continuous adjustment of the leg length – so the trousers fit perfectly for every height without the need for tailoring. Combined with the elasticated waistband at the sides, the trousers offer optimal freedom of movement for physically demanding work.
Are bulk discounts and company embroidery possible?
Yes. For orders of 10 pieces or more, we offer tiered volume discounts. Company embroidery is also available upon request. Contact us directly.

Ready to order?

Bulk quantities, company embroidery, or samples available upon request.

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FR412 Work Trousers – Bizflame Plus
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Specifications
Material 🧵 Outer Fabric: Bizflame Work – the perfect combination of comfort and safety! 🌾 99% Cotton – for a comfortable feel and breathability. ⚡ 1% Carbon Fiber – gives the fabric additional strength and durability. ⚖️ 210g Weight – optimal protection without unnecessary bulk, ideal for demanding work environments
Taschen 🎒 Cargo pockets on the leg; 📏 Ruler pocket; 👖 2 back pockets
Eigenschaften 🔥 Radiation protection;🎒 Cargo pockets on the leg; 📏 👖 2 back pockets – more space, more comfort; 🔄 Adjustable hem;💼 Functionality meets comfort; 🤸 Side elastic waistband – ensures maximum comfort and freedom of movement.