OBO Bettermann Fire Protection Cable Bandage FSB-WLS 120mm x 10m Intumescent 7203170

Electricians and fire protection contractors use the OBO Bettermann FSB-WLS cable bandage to wrap cable bundles and cable trays where fire resistance is required. The bandage is made from an intumescent, fiberglass-reinforced composite that expands when exposed to heat, sealing off penetrations and maintaining circuit integrity.

Key specifications

• Fire resistance class: S90 for cable systems
• Material: Intumescent composite, fiberglass reinforced
• Roll length: 10 m
• Bandage width: 120 mm
• Material thickness: 1.5 mm
• Colour: Light grey
• Halogen-free: Yes
• Installation temperature range: -5 to +50 °C
• Operating temperature range: -20 to +80 °C
• Flammability class: B1 according to DIN 4102-1
• Standards/Certifications: DIN 4102-11, General Building Inspection Certificate

Why choose it

The FSB-WLS bandage is part of the OBO Bettermann fire protection system, designed for straightforward on-site application. Its intumescent layer reacts to fire by foaming and creating an insulating char, which helps prevent the spread of flames and smoke along cable routes.

Ideal use cases

• Fire-resistant encapsulation of cables and lines in buildings
• Wrapping cable bundles and cable trays in escape routes
• Sealing cable penetrations in walls and floors

Good to know

Store the bandage in dry, frost-free conditions. It is halogen-free, so it does not release corrosive gases in a fire. The product is certified according to DIN 4102-11 and has a general building inspection certificate.