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PTC40/21Y Partex clip-on marker holder, 21mm, pack 100
Partex PTC40/21Y yellow PVC clip-on cable marker holder with a 21 mm transparent label pocket, designed for identifying electrical and CAT5/CAT6 network cables with outside diameters of 5.0–6.2 mm and supplied in a pack of 100.
£7.90
Why Choose the Partex PTC40/21Y Clip-On Marker Holder?
The Partex PTC40/21Y is a durable and practical yellow clip-on cable marker holder designed for clear, reliable identification of electrical wires, network cables and conductors in industrial installations, electrical control panels and communication systems. As part of the Partex PTC clip-on marker holder series, it provides a convenient solution for identifying cables without disconnecting existing wiring.
Featuring a 21 mm transparent label pocket, the PTC40/21Y securely accommodates compatible printed identification inserts while keeping cable markings clearly visible. Its open clip-on construction allows quick installation onto connected wires and cables, making it particularly useful for electrical maintenance, retrofitting and new installations. The holder is manufactured from durable PVC and incorporates strong retaining clips to help maintain its position on the cable.
Designed for cables with an outside diameter of 5.0–6.2 mm, the Partex PTC40/21Y is particularly suitable for CAT5 and CAT6 Ethernet cables, as well as compatible electrical conductors. Its yellow body provides a distinctive identification background, while the transparent pocket protects the printed identification insert. Supplied in a convenient pack of 100 holders, it offers an efficient cable identification solution for electrical contractors, panel builders and network installation engineers.
Key Advantages
- Practical clip-on cable marker holder for electrical and network cable identification.
- 21 mm transparent label pocket keeps printed identification inserts visible and protected.
- Suitable for cable diameters of 5.0–6.2 mm.
- Yellow PVC construction provides a durable and distinctive identification solution.
- Ideal for identifying CAT5 and CAT6 Ethernet cables within the specified diameter range.
- Open clip-on design allows installation before or after cable termination.
- Strong retaining clips securely grip the cable while allowing repositioning when required.
- Compatible with suitable Partex PFC042 and PP+046 printed marker inserts.
- Pack of 100 pieces provides a convenient quantity for electrical and network installation projects.
Key Features
- Partex PTC40 series clip-on cable marker holder.
- PTC40/21Y yellow variant with transparent identification pocket.
- 21 mm marker pocket length for printed identification inserts.
- 5.0–6.2 mm compatible cable outside diameter.
- Suitable for approximately 4.0–6.0 mm² conductors, depending on cable insulation diameter and construction.
- PVC material for durable electrical and network cable identification.
- Operating temperature range of -30 to +60 °C.
- Open snap-on profile for quick installation onto connected cables.
- Strong retaining clips help secure the holder against unwanted movement.
- Compatible with Partex PFC042 and PP+046 identification inserts.
- 9.3 mm holder height and 6.9 mm holder width.
- 4.6 mm label pocket face width for compatible printed markers.
- Suitable for identification of electrical conductors and industrial communication cables.
- Supplied in packs of 100 holders.
Reliable Cable Identification for Electrical and Network Installations
Accurate cable identification is essential for maintaining organised, efficient and easily serviceable electrical and communication systems. The Partex PTC40/21Y clip-on marker holder provides a convenient method of displaying cable numbers, circuit references, network identifiers and equipment identification without requiring permanent markings directly on the cable insulation.
The PTC40 series is particularly beneficial for electrical panel manufacturers, automation engineers, network installers and maintenance teams. Its open design allows identification holders to be fitted to existing connected cables, reducing the need for wiring alterations during maintenance or modifications. The transparent label pocket accommodates compatible printed inserts, helping identification remain legible during routine inspection, testing and troubleshooting.
The 21 mm label pocket provides space for longer identification references than shorter marker holder variants, making it useful for detailed cable numbering and network identification. The yellow holder body offers a distinctive appearance that can assist with visual organisation and identification within complex wiring installations.
When used with suitable Partex identification inserts, the PTC40/21Y supports consistent marking throughout electrical cabinets, structured cabling installations and industrial communication networks. Selecting the correct holder according to the cable's outside diameter ensures a secure fit and dependable identification.
Typical Applications
- CAT5 and CAT6 Ethernet cable identification.
- Structured cabling and network installations.
- Electrical control panels and distribution cabinets.
- Industrial automation and PLC wiring systems.
- Machine building and OEM electrical installations.
- Industrial Ethernet and communication networks.
- Electrical maintenance, repair and retrofit projects.
- Terminal block wiring and conductor identification.
- Data cabinets, network infrastructure and communication equipment.
- Building services and electrical installation projects.
Technical Specifications
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| Pack Quantity | 100 | |
|---|---|---|
| Product Series | Partex PT holders | |
| Device Type | Marker holder / carrier | |
| Cable Diameter (mm) | 5–6.2 mm | |
| Colour | Yellow | |
| Material | PVC | |
| Manufacturer | Partex | |
| Series | PTC40 Clip-On Marker Holders | |
| Model | PTC40/21Y | |
| Product type | Clip-on cable marker holder with transparent label pocket | |
| Colour | Yellow | |
| Material | PVC | |
| Marker pocket length | 21 mm | |
| Compatible cable diameter | 5.0–6.2 mm | |
| Approximate conductor cross-section | 4.0–6.0 mm² | |
| Holder height | 9.3 mm | |
| Holder width | 6.9 mm | |
| Label pocket face width | 4.6 mm | |
| Operating temperature | -30 to +60 °C | |
| Mounting type | Clip-on / snap-on cable mounting | |
| Installation | Suitable for connected and unterminated wires | |
| Compatible marker inserts | Partex PFC042 and PP+046 | |
| Suitable cable types | CAT5, CAT6 and compatible electrical cables | |
| Pack quantity | 100 pieces | |
| HS Code | 39269097 |
Frequently Asked Questions
What is the Partex PTC40/21Y used for?
The Partex PTC40/21Y is a yellow clip-on marker holder used to identify electrical wires, Ethernet cables and other compatible conductors. It holds a printed identification insert inside a transparent pocket, making cable numbers, circuit references and network identifiers easy to read.
What cable sizes are suitable for the PTC40/21Y?
The holder is designed for wires and cables with an outside diameter of 5.0–6.2 mm. This typically corresponds to electrical conductor sizes of approximately 4.0–6.0 mm², depending on insulation thickness and cable construction. It is also suitable for CAT5 and CAT6 network cables within the specified diameter range.
What is the length of the marker holder?
The PTC40/21Y features a 21 mm long transparent label pocket designed to accommodate compatible printed cable identification inserts, including suitable Partex PFC042 and PP+046 marker profiles.
Can the marker holder be installed on an already connected cable?
Yes. The open clip-on design allows the holder to be pressed onto a cable after termination, making it suitable for existing electrical installations, network cabling, maintenance work and control panel modifications. Strong retaining clips help secure the holder while allowing repositioning when required.
How many marker holders are supplied in one pack?
Each pack contains 100 yellow Partex PTC40/21Y clip-on marker holders, making it suitable for electrical panel assembly, network installations, industrial wiring and cable identification projects.
Trusted by Electrical and Network Installation Professionals Worldwide
Partex PTC clip-on marker holders provide a practical and dependable solution for professional wire and cable identification. Designed for quick installation, secure positioning and clear labelling, the PTC40/21Y helps electrical engineers, network installers, panel builders and maintenance professionals maintain organised, easily identifiable wiring and communication systems.
