Why Choose the Cembre 4439216 SM-21 Snap-On Cable Marker?
The Cembre 4439216 is a professional SM-21 snap-on cable marker designed for fast, reliable and permanent identification of electrical cables and conductors in industrial, commercial and automation installations. As part of the trusted Cembre cable identification system, it provides an efficient marking solution for electricians, panel builders and maintenance engineers requiring clear conductor organisation.
The marker features a white copolymer construction with the printed identification character S, allowing cables to be quickly recognised during installation, inspection and maintenance operations. Its snap-on design enables simple fitting directly onto compatible cables without requiring adhesives or additional fixing components.
Designed for cable sizes from 2 AWG to 2/0 AWG, the Cembre SM-21 marker is suitable for larger electrical conductors used in control panels, machinery wiring, power distribution systems and industrial equipment. The durable copolymer material provides excellent mechanical strength and reliable performance in demanding environments.
Key Advantages
Professional snap-on cable marker designed for industrial identification.
Printed letter S identification for clear conductor recognition.
Suitable for 2 AWG to 2/0 AWG cable sizes.
High-visibility white colour improves cable identification accuracy.
Durable copolymer construction for long-term industrial performance.
Fast installation without adhesives or additional mounting hardware.
Key Features
Cembre SM-21 snap-on cable marker series.
Part number: 4439216.
Reference: 17980-S.
Marker text: S.
Colour: White.
Material: Copolymer.
Cable range: 2 AWG to 2/0 AWG.
Snap-on mounting system for efficient cable marking.
Designed for professional electrical identification applications.
Reliable Cable Identification for Electrical Installations
Cable identification is essential for improving electrical safety, simplifying maintenance and reducing troubleshooting time. The Cembre SM-21 snap-on marker system provides an effective method for organising conductors and maintaining accurate identification within industrial wiring environments.
The Cembre 4439216 combines quick installation with durable construction, making it suitable for control cabinets, machinery wiring, electrical distribution equipment and automation systems where dependable cable management is required.
Typical Applications
Industrial control panels and electrical cabinets.
Machine wiring and automation systems.
Power distribution installations.
Electrical maintenance applications.
OEM equipment manufacturing.
Industrial cable management systems.
Technical Specifications
Tick the specs you need, then view products that match.
Colour
White
Device Type
Snap-on cable marker
Application
Cable / wire ID
Compatible With
Pre-printed (no printer needed)
Fixing Method
Snap-on
Series
SM-21
Product type
Snap-on cable marker
Manufacturer part number
4439216
Printed identification
S
Colour
White
Material
Copolymer
Cable size range
2 AWG – 2/0 AWG
Minimum outside diameter
Approx. 0.43 in
Maximum outside diameter
Approx. 0.59 in
Operating temperature range
-40°C to 105°C
Halogen free
Yes
Packaging
50 pieces
HS Code
39269097
Country of Manufacture
Germany
Frequently Asked Questions
What is the Cembre 4439216 used for?
The Cembre 4439216 is used for identifying electrical cables and conductors with a durable snap-on marker system.
What identification character is printed on this marker?
This cable marker is printed with the character S for clear conductor identification.
What cable sizes are compatible with this marker?
The SM-21 marker is designed for cables between 2 AWG and 2/0 AWG.
What material is the Cembre SM-21 marker made from?
The marker is manufactured from durable copolymer material designed for reliable industrial use.
How is the cable marker installed?
The marker uses a snap-on design that allows quick fitting directly onto compatible cables.
Trusted by Electrical Professionals Worldwide
Cembre cable marking solutions are trusted by electrical installers, machine builders and industrial engineers to provide reliable identification, improved organisation and efficient maintenance of electrical systems.
Colour
White
Device Type
Snap-on cable marker
Application
Cable / wire ID
Compatible With
Pre-printed (no printer needed)
Fixing Method
Snap-on
Series
SM-21
Product type
Snap-on cable marker
Manufacturer part number
4439216
Printed identification
S
Colour
White
Material
Copolymer
Cable size range
2 AWG – 2/0 AWG
Minimum outside diameter
Approx. 0.43 in
Maximum outside diameter
Approx. 0.59 in
Operating temperature range
-40°C to 105°C
Halogen free
Yes
Packaging
50 pieces
HS Code
39269097
Country of Manufacture
Germany
No documents available for this product.
UK delivery
Delivery options
Free UK delivery on orders over £200 ex VAT. Order in-stock items before 2pm Monday to Friday for next-day delivery.
This productLead time on request
Please contact us for a delivery time before you order
Standard delivery
£8 ex VAT · free over £200
UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
Collect from our showroom
Mon–Fri, 8am–5pm
Order and pay online, then collect from our showroom.
Please allow 15–30 minutes after ordering for us to prepare your order.
Northern Ireland, ROI & export
Priced at checkout
We deliver to Northern Ireland, the Republic of Ireland and overseas.
Delivery is calculated at checkout based on your destination.
Orders with mixed availability
Shipped complete
If part of your order is on a lead time, we hold it and send everything together.
Need the in-stock items sooner? Ask us and we can split the delivery.
Business customer returns
Returns & order support
Need to return an item? Find the guidance for your order below, then contact our team before sending anything back.
Stocked items
Request within 30 days
Changed your mind or ordered the wrong item? Request a return within 30 days of receipt. There is no restocking charge.
Items must be unused, in resalable condition and in their original packaging, and returns need our approval first. Return carriage is at your cost, and the original delivery charge is not refunded.
Faulty or damaged items
Tell us as soon as possible
Faulty, damaged on delivery or the wrong product supplied? Contact our team as soon as possible with the details.
We will review the issue and arrange an appropriate resolution under our terms and conditions and your statutory rights.
Made-to-order items
Manufacturer approval needed
Manufactured, configured and special-order products can only be returned with the manufacturer’s approval. Any handling charge is agreed with you when you request the return.
This does not affect claims for faulty goods or items that do not meet the agreed specification.
Let’s get your return sorted.
Send your order number, product details and reason for return. For faults or delivery damage, include photographs if available. We will confirm the next steps.
The 30-day return request period applies to change-of-mind returns for stocked items. It does not limit your statutory rights for faulty or non-conforming goods.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
Trusted Manfacturers
● frequently asked questions
Common questions about our products and support
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
What product ranges do you supply
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Can you help specify the correct part?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Do you have stock for urgent orders?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
What are your delivery times and costs?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
What about warranties, returns and faulty items?
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
