Cable marking methods: which one fits your install?
Heat-shrink markers, clip-on tags, wrap-around labels or writable cable ties - each has its right place. This guide compares the four common methods by mounting type, durability and standard, and shows when each solution fits.
Browse marking suppliesWhat cable marking methods are there?
The four common methods differ mainly in whether they go on before or after the cable is terminated, and how permanent the print is. Heat-shrink markers slide on before the connector and are fixed with hot air, clip-on tags and wrap-around labels can be added at any time, and writable cable ties combine fastening and marking in one step.
The choice depends on cable diameter, environment (oil, UV, temperature), required service life and whether the cable is already terminated. In industrial wiring several methods often work side by side.
- Heat-shrink markers: permanent, only fit before termination.
- Clip-on tags: on ferrules and terminals, swappable anytime.
- Wrap-around labels: self-laminating, protecting the print.
- Cable ties with tag: fasten and mark at the same time.
When is each solution correct for the install?
The deciding factor is timing: closed ring markers such as heat-shrink sleeves need an open cable end. Anything added later to already-plugged cables must be able to go on from the side.
Thermal transfer or laser - how to print smudge- and oil-proof.
Read the guideWhat matters in selection and printing?
Beyond the mounting type, cable diameter and print method decide legibility and durability. Heat-shrink markers must match the diameter: a 3:1 shrink ratio covers a wide range with one size, but only sits crease-free with the correct pre-selection.
- Check diameter before and after shrinking (2:1 or 3:1 ratio).
- Thermal transfer print is smudge-proof and outlasts direct thermal.
- Build the marking systematically and uniquely per EN 62491.
- Match the marker temperature range to the application (up to 135 °C).
- For retrofits on plugged cables, choose side-mounting types only.
Frequently asked questions
Which method suits already-terminated cables?
Clip-on tags, wrap-around labels or writable cable ties, because they mount from the side. Heat-shrink markers need an open cable end and cannot be fitted afterwards.
What does a 3:1 shrink ratio mean?
The marker shrinks to a third of its starting diameter. That covers a wide diameter range with one size and sits crease-free and permanent once heated.
Does a standard govern cable marking?
IEC/EN 62491 sets out how cores and cables are marked systematically. It defines the structure of the designation, not the material - material choice follows the environment and durability needs.
Which print lasts longest?
Thermal transfer print resists smudging, oil and UV better than direct thermal. Combined with self-laminating labels or heat-shrink markers, the marking stays legible for years.
Looking for the right cable marking?
We supply heat-shrink markers, clip-on tags, wrap-around labels and writable cable ties with the matching print system - for every mounting type.
Standard-compliant
Systematic marking per IEC/EN 62491.
Durable
Oil, UV and temperature resistant materials.
Exact fit
The right shrink ratio for every diameter.
Expert advice
We help you choose the method.