Why Choose the Cembre 2811051 TBS254X5RE Heat-Shrink Marker Sleeve?
The Cembre 2811051 (TBS254X5RE) is a professional Termoblock heat-shrink marker sleeve designed for permanent cable identification, electrical insulation and mechanical protection. Manufactured from flame-retardant, halogen-free polyolefin with a 2:1 shrink ratio, it provides excellent durability, flexibility and environmental resistance for demanding industrial and commercial electrical installations.
Supplied as a 5 metre red coil, the sleeve features an internal diameter of 26 mm before shrinking and approximately 12.5 mm after shrinking, making it ideal for large power cables, cable harnesses and heavy-duty wiring applications.
As part of Cembre's trusted Termoblock (TBS) range, the 2811051 is suitable for use with professional thermal transfer printing systems, providing long-lasting cable identification for OEM manufacturers, panel builders and electrical contractors.
Excellent resistance to abrasion, chemicals and weathering.
Ideal for large industrial cables and cable assemblies.
Key Features
Manufacturer Part Number: 2811051
Cembre Product Code: TBS254X5RE
Heat-shrink polyolefin sleeve.
Internal diameter before shrink: 26 mm.
Internal diameter after shrink: 12.5 mm.
Wall thickness after shrink: 0.9 mm.
Coil length: 5 m.
Colour: Red.
Permanent Heat-Shrink Cable Identification
Cembre Termoblock sleeves provide reliable insulation, mechanical protection and permanent cable identification. Their flame-retardant polyolefin construction offers excellent flexibility and long-term resistance to abrasion, chemicals and harsh industrial environments.
Designed for professional electrical installations, the TBS range is widely used to protect cable terminations, identify conductors, insulate electrical connections and provide strain relief in industrial machinery, switchgear and power distribution equipment.
Typical Applications
Industrial control panels.
Power distribution systems.
Electrical switchgear.
Machine building.
OEM electrical equipment.
Large cable harnesses and power conductors.
Permanent cable identification.
Technical Specifications
MPN
2811051
Product Code
TBS254X5RE
Series
Termoblock (TBS)
Product Type
Heat-shrink marker sleeve
Material
Halogen-free flame-retardant polyolefin
Shrink Ratio
2:1
Internal Diameter (Before Shrink)
26 mm
Internal Diameter (After Shrink)
12.5 mm
Wall Thickness After Shrink
0.9 mm
Coil Length
5 m
Colour
Red
Operating Temperature
-55°C to +125°C
Minimum Shrink Temperature
70°C
Full Shrink Temperature
110°C
Dielectric Strength
15 kV/mm
RoHS Compliant
Yes
UL 224 Certified
Yes
HS Code
39173200
Country of Manufacture
China
Frequently Asked Questions
What is the Cembre 2811051 used for?
It is used for permanent identification, insulation and protection of large electrical cables and conductors using a heat-shrink sleeve.
What is the Cembre product code?
The manufacturer's product code is TBS254X5RE.
What cable size does it fit?
The sleeve has an internal diameter of 26 mm before shrinking and approximately 12.5 mm after shrinking.
What material is it made from?
It is manufactured from halogen-free, flame-retardant polyolefin with a 2:1 shrink ratio.
What operating temperatures can it withstand?
The sleeve is designed for continuous operation between -55°C and +125°C.
Trusted by Electrical Professionals Worldwide
Cembre Termoblock heat-shrink sleeves are trusted by electrical contractors, OEM manufacturers and panel builders for delivering permanent cable identification, dependable insulation and long-lasting protection in demanding industrial environments.
MPN
2811051
Product Code
TBS254X5RE
Series
Termoblock (TBS)
Product Type
Heat-shrink marker sleeve
Material
Halogen-free flame-retardant polyolefin
Shrink Ratio
2:1
Internal Diameter (Before Shrink)
26 mm
Internal Diameter (After Shrink)
12.5 mm
Wall Thickness After Shrink
0.9 mm
Coil Length
5 m
Colour
Red
Operating Temperature
-55°C to +125°C
Minimum Shrink Temperature
70°C
Full Shrink Temperature
110°C
Dielectric Strength
15 kV/mm
RoHS Compliant
Yes
UL 224 Certified
Yes
HS Code
39173200
Country of Manufacture
China
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
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.
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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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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...
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...