PO Tie-On Cable Marker Low Fire Hazard – EN45545-2 HL3 (60 x 100)

Material: The ZH heatshrink are made of halogen free, flame retardant, heat shrinkable polyolefin tubing with ideal printability properties for identification purposes. The compound of the tubing is excluded for halogens and offers excellent fire safety characteristics combined with minimal smoke emission. A low smoke density allows good visibility during a fire, increasing the ease of escape and saving lives. A very low smoke toxicity and the excellent result in LOI test, complete the qualities of this item. The ZH material boasts 3 top class railway normative, being one of the best printable heat shrinkable materials for the railway market.

Standard: EN45545-2 is a standard that describes the material requirements for different hazard levels - HL1 - HL-2 -Hl3 in railway applications. The standard sets the flammability, smoke emissions and toxicity requirements for internal and external applications.

The HL levels are defined as follows:

- **HL 1**: Applies to vehicles that operate on open tracks with easy access and low speed. Examples are freight trains, shunting locomotives and maintenance vehicles.
- **HL 2**: Applies to vehicles that operate on open tracks with easy access and high speed, or on closed tracks with easy access and low speed. Examples are regional trains, trams and metros.
- **HL 3**: Applies to vehicles that operate on closed tracks with difficult access and high speed, or on open tracks with difficult access and low speed. Examples are high-speed trains, underground trains and trains that operate in long tunnels.

The higher the hazard level, the more stringent the requirements for fire behaviour of materials and components. The requirements are specified in terms of flammability, smoke emission and toxicity for internal and external applications.