FRHF is an abbreviation for Flame Retardant and Halogen Free, describing a cable sheathing material that is flame retardant, halogen free, low smoke, noncorrosive, and non fire propagating.
FRHF refers to a category of cable jacket or sheathing materials engineered to limit flame spread while avoiding the use of halogen based compounds. In commercial and industrial wiring systems, FRHF materials are selected to enhance fire performance and reduce the release of corrosive gases during combustion. The designation communicates both flame retardant characteristics and halogen free composition.
Flame retardant performance indicates that the material is formulated to resist ignition and slow the spread of flame when exposed to a fire source. In practical terms, FRHF sheathing is designed to self extinguish under specified test conditions and limit flame propagation along the cable length. This property is critical in densely cabled commercial facilities where fire growth through wiring pathways must be controlled.
The halogen free aspect of FRHF materials addresses the chemical composition of the jacket. Traditional cable compounds may contain halogens such as chlorine or fluorine. When burned, these compounds can produce corrosive gases that damage electronic equipment and building infrastructure. FRHF materials are formulated without halogens, reducing the generation of acidic byproducts in fire conditions. This helps protect sensitive commercial equipment, control systems, and structural components.
Low smoke output is another defining feature of FRHF sheathing. In enclosed commercial and industrial spaces, smoke density can significantly impact visibility and occupant safety during emergency conditions. FRHF materials are engineered to limit smoke generation under fire exposure, contributing to clearer egress pathways and improved conditions for response operations.
FRHF cables are commonly specified in data centers, transportation facilities, industrial plants, and commercial buildings where minimizing corrosive residue and smoke is a priority. While FRHF addresses flame retardance and material composition, it does not automatically imply plenum or riser classification unless specifically tested and marked accordingly.
Overall, FRHF designates a performance driven cable jacket formulation that balances flame resistance, reduced smoke emission, and noncorrosive combustion behavior for use in commercial and industrial environments.
Flame Retardant Halogen Free
LSZH
Underwriters Laboratories