Halogen free cables are identified by the following two 3P ratings:

• LS0H
  This means "Low Smoke Zero Halogen Thermoplastic". Such a cable is not fire retardant, and has only passed a flame test as specified in IEC 60332-1-2 / CENELEC EN 60332-1-2 (earlier valid as IEC 332-1 or IEC 60332-1).
• LSFR0H
  This means "Low Smoke Fire Retardant Zero Halogen Thermoplastic. Such a cable is also fire retardant, and has passed both a flame test specified in IEC 60332-1-2 / CENELEC EN 60332-1-2 and a fire test as specified in IEC 60332-3-24 (Cat. C) / CENELEC EN 50266-2-4 (Cat. C) or IEC 60332-3, Cat. C:1992 / CENELEC HD 405.3.

Other Names

Unfortunately, no internationally recognized names exist for the two cable types. Some other commonly applied names for LS0H are:

LSZH (Low Smoke Zero Halogen)
HFFR (Halogen Free Flame Retardant),
which is totally confused with the same name also being used for the fire retardant cable (see below).

Other commonly applied names for LSFR0H are:

LSFRZH (Low Smoke Fire Retardant Zero Halogen)
HFFR (Halogen Free Fire Retardant),
which is totally confused with the same name also being used for the flame retardant cable (see above).