4439390 Cembre SNAP SM-21 17980-AC (WH)

Q: What cable sizes does it fit?

The marker fits cables with an outer diameter between 11 mm and 15 mm, typically covering conductor sizes from 35 mm² to 70 mm².

Cembre 4439390 SNAP SM-21 17980-AC snap-on cable marker with M character, manufactured from halogen-free POM resin for identifying 11–15 mm cables in industrial electrical installations.

SKU: 4439390Alt SKU: 17980-ACMPN: 4439390

List Price £1.17 ex VAT

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£1.17

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SUBTOTAL (EX VAT) £1.17

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Manufacturer Lead Time

£1.17

Why Choose the Cembre 4439390 SNAP SM-21 Cable Marker?

The Cembre 4439390 SNAP SM-21 (17980-AC) is a premium snap-on cable marker designed to provide fast, reliable and permanent cable identification in industrial and commercial electrical installations. Manufactured from durable halogen-free acetylic resin (POM), it delivers excellent mechanical strength, outstanding resistance to harsh environments and long-lasting identification performance.

As part of Cembre's professional cable identification range, the SNAP SM-21 features an easy snap-on design that allows installation onto existing cables without disconnecting wiring. This reduces installation time, simplifies maintenance and improves cable management within control panels, switchgear and industrial automation systems.

Designed for cables with an 11–15 mm outer diameter (approximately 35–70 mm² conductor size), the Cembre 4439390 is supplied with the "M" character (code 17980-AC), making it ideal for professional cable identification applications requiring clear alphabetical marking.

Key Advantages

Professional snap-on cable marker for permanent cable identification.
Quick installation without disconnecting existing wiring.
Manufactured from durable halogen-free POM resin.
Suitable for 11–15 mm cable diameters.
Excellent resistance to industrial operating conditions.
Improves cable organisation, servicing and maintenance efficiency.

Key Features

Cembre SNAP SM-21 cable marker.
Manufacturer Part Number: 4439390.
Alternative SKU: 17980-AC.
Printed character: M.
White finish (RAL 9003).
Manufactured from acetylic resin (POM).
Halogen-free construction.
Operating temperature: -40°C to +106°C.
RoHS compliant.
Supplied in bags of 50 pieces.

Reliable Cable Identification for Industrial Wiring

The Cembre SNAP SM-21 cable marker provides dependable long-term cable identification for electrical installations. Its snap-on design enables quick installation onto pre-installed cables, reducing downtime while improving organisation and simplifying future maintenance.

Its robust halogen-free construction offers excellent durability across a wide operating temperature range, making it suitable for electrical control panels, machinery, OEM equipment, process automation and commercial electrical installations.

Typical Applications

Industrial control panels.
Machine building and OEM equipment.
Electrical switchboards.
Industrial automation systems.
Building electrical installations.
Maintenance and retrofit projects.

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
Material	Acetal (POM)
Series	SNAP Cable Markers
Alternative SKU	17980-AC
Product type	Snap-on cable marker
Material	Acetylic resin (POM)
Colour	White (RAL 9003)
Printed character	M
Halogen free	Yes
Cable diameter	11–15 mm
Cable size	35–70 mm²
Operating temperature	-40°C to +106°C
Compliance	RoHS
Packaging	Bag of 50
HS Code	39269097
Country of Manufacture	Germany

Frequently Asked Questions

What is the Cembre 4439390 used for?

It is a snap-on cable marker designed for permanent identification of electrical cables in industrial and commercial installations.

What cable sizes does it fit?

The marker fits cables with an outer diameter between 11 mm and 15 mm, typically covering conductor sizes from 35 mm² to 70 mm².

What character is printed on this marker?

This version is supplied with the M character for professional cable identification systems.

Can it be fitted without disconnecting the cable?

Yes. The snap-on design enables installation onto existing cables without disconnecting the wiring.

Is it suitable for industrial environments?

Yes. Its robust halogen-free construction and wide operating temperature range make it ideal for demanding industrial applications.

Trusted by Electrical Professionals Worldwide

Cembre cable identification products are trusted by electricians, panel builders and industrial maintenance engineers worldwide for delivering reliable, durable and professional cable marking solutions.

Colour	White
Device Type	Snap-on cable marker
Application	Cable / wire ID
Compatible With	Pre-printed (no printer needed)
Fixing Method	Snap-on
Material	Acetal (POM)
Series	SNAP Cable Markers
Alternative SKU	17980-AC
Product type	Snap-on cable marker
Material	Acetylic resin (POM)
Colour	White (RAL 9003)
Printed character	M
Halogen free	Yes
Cable diameter	11–15 mm
Cable size	35–70 mm²
Operating temperature	-40°C to +106°C
Compliance	RoHS
Packaging	Bag of 50
HS Code	39269097
Country of Manufacture	Germany

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 product Lead 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.

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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.

Email returns team 01706 242050

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.

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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.

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Flexible payment terms for qualifying organisations

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Same day dispatches

3500 +

Customers supported

28 Trusted Manfacturers

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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.

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We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.

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