Why Choose the Partex PTC30/21W Clip-On Marker Holder?
The Partex PTC30/21W is a durable and practical clip-on cable marker holder designed for clear, secure and professional identification of electrical wires and cables in industrial control panels, electrical installations and automation systems. As part of the Partex PTC clip-on marker holder series, it provides a convenient solution for organising and identifying conductors without requiring cables to be disconnected.
Featuring a 21 mm transparent label pocket and a white clip-on body, the PTC30/21W securely holds compatible printed identification inserts while keeping markings clearly visible and protected. Its snap-on construction enables quick installation onto existing wiring, making it particularly useful for maintenance, panel building and electrical system modifications.
Designed for cables with an outside diameter of 4–5 mm, the PTC30/21W is suitable for typical conductor sizes of approximately 2.5–4 mm², depending on cable insulation. Supplied in a convenient pack of 200 pieces, these marker holders provide an efficient identification solution for electrical contractors, control panel manufacturers and industrial maintenance engineers.
Key Advantages
- Convenient clip-on design enables installation without disconnecting electrical wiring.
- 21 mm transparent label pocket provides clear visibility of printed identification.
- Suitable for cables with an outside diameter of 4–5 mm.
- White marker holder supports clear and consistent cable identification.
- Secure snap-on mounting helps prevent accidental movement while allowing repositioning.
- Compatible with suitable Partex printed marker inserts for professional wire identification.
- Protective label pocket helps keep identification inserts securely positioned.
- Supplied in a pack of 200 pieces for efficient installation across multiple circuits.
Key Features
- Partex PTC clip-on cable marker holder series.
- PTC30/21W white marker holder.
- 21 mm label pocket length.
- 4–5 mm compatible cable outside diameter.
- Suitable for approximately 2.5–4 mm² conductors, subject to insulation diameter.
- Transparent protective pocket for printed identification inserts.
- Open clip-on construction for installation before or after cable termination.
- Secure retaining barbs provide a firm grip on the cable.
- Compatible with suitable Partex PFC042 and PP+046 identification profiles.
- Suitable for electrical control panels, distribution systems and industrial machinery.
- 200 marker holders per pack.
Technical Specifications
- Manufacturer: Partex
- Series: PTC Clip-On Marker Holders
- Model: PTC30/21W
- Product type: Clip-on cable marker holder
- Marker holder size: PTC30
- Colour: White
- Label pocket: Transparent
- Label pocket length: 21 mm
- Compatible cable diameter: 4–5 mm
- Typical conductor cross-section: 2.5–4 mm²
- Holder height: 7.8 mm
- Holder width: 5.7 mm
- Label pocket width: 4.6 mm
- Material: PVC
- Operating temperature: −30 to +60 °C
- Mounting type: Clip-on / snap-on cable mounting
- Compatible identification inserts: Partex PFC042 and PP+046 profiles
- Installation: Before or after cable termination
- Pack quantity: 200 pieces
Reliable Cable Identification for Industrial Electrical Systems
Clear and consistent cable identification is essential for safe installation, efficient troubleshooting and reliable maintenance of electrical control systems. Clip-on marker holders such as the Partex PTC30/21W provide a practical way to display printed wire references, circuit numbers and terminal identification without applying adhesive labels directly to cable insulation.
The Partex PTC series is designed for electrical engineers, control panel builders and industrial maintenance professionals who require flexible cable marking solutions. The transparent pocket protects the identification insert while keeping it readable, and the clip-on design allows markers to be installed or repositioned on connected conductors. This makes the PTC30/21W particularly useful for industrial automation, machine wiring and electrical distribution applications.
Typical Applications
- Industrial electrical control panels and switchgear assemblies.
- PLC cabinets and industrial automation wiring.
- Motor control centres and machinery control circuits.
- Electrical distribution boards and terminal wiring.
- Industrial machinery and equipment identification.
- Electrical installation, servicing and maintenance.
- Wire and cable identification in manufacturing facilities.
- OEM control panel construction and machine building.
