CATU AFG-4001 Multi-Risk Arc Flash Trousers

Key Specifications

• Arc Protection Class (APC): APC 2
• Arc Thermal Performance Value (ATPV): 25–40 cal/cm²
• Standards Met:
  • IEC 61482-2
  • ISO 11612 (A1, B1, C2, F2)
  • ISO 11611 Class 2
  • EN 1149-5
  • NFPA 70E - ASTM F1959
• Material Composition: 70% Kermel®, 29% Viscose FR, 1% Antistatic (425 g/m²)
• Design Features:
  • Elasticated waist for comfort
  • Adjustable inner leg length (77 cm or 82 cm)
  • Reinforced knees and crotch for durability
  • Two Italian pockets and two cargo pockets for storage
  • Comfort foam padding at the knees
• Sizes Available: XS to 5XL

Arc Flash Protection: The trousers provide protection against arc flash incidents with an ATPV rating of 25–40 cal/cm², suitable for environments classified under NFPA 70E Category 3 or 4.

Heat and Flame Resistance: Meets ISO 11612 standards, offering protection against various heat and flame hazards.

Welding Protection: Complies with ISO 11611 Class 2, suitable for more hazardous welding conditions involving higher levels of heat, spatter, and molten metal.

Electrostatic Dissipation: Complies with EN 1149-5, ensuring the trousers dissipate electrostatic charges, reducing the risk of ignition in explosive atmospheres.

To achieve comprehensive protection, it's advisable to pair the AFG-4300 jacket with the following accessories:

Hood: AFG-HOOD-4

• Designed to provide head and face protection against arc flash hazards.
• Features an integrated face shield and balaclava for full coverage.

Jacket: AFG-4000

• Offers lower body protection with an ATPV rating of 40 cal/cm².
• Designed to match the trouser's protective capabilities.

Compliance Standards Explained

IEC 61482-2 – Arc Flash Protection

• APC 2 (Arc Protection Class 2):
  • Tested using the Box Test method.
  • Withstands an arc current of 7 kA for 0.5 seconds.
  • Higher protection level than APC 1 (4 kA).
• ATPV 25–40 cal/cm² (Arc Thermal Performance Value):
  • Measures how much incident energy the fabric can withstand before causing a second-degree burn.
  • This rating is suitable for NFPA 70E PPE Category 4, the highest level.
  • Tested using the Open Arc Test (ASTM F1959 / IEC 61482-1-1).

ISO 11612 – Protection Against Heat and Flame

Specifies performance for protective clothing worn in high-temperature environments.

ISO 11611 Class 2 – Welding and Allied Processes

• Class 2 = Higher protection level than Class 1.
• Protects against:
  • Molten metal splatter
  • Short flame contact
  • Radiant heat
• Also includes requirements for mechanical strength and tear resistance.

EN 1149-5 – Electrostatic Properties

• Ensures the dissipation of static electricity to reduce ignition risks in explosive or flammable environments.
• Must be worn in conjunction with other antistatic PPE.

NFPA 70E – Electrical Safety in the Workplace (U.S.)

• Specifies PPE arc rating categories (1–4) for electrical work.
• ATPV of 25–40 cal/cm² qualifies for Category 4, the highest level of protection.
• Used alongside job hazard assessments to select proper PPE.

ASTM F1959 – Arc Rating Test Method

• U.S. standard method to determine ATPV or EBT (Energy Breakopen Threshold).
• Fabric is exposed to a controlled arc to measure thermal transfer.