Why Choose the Cembre 2811112 TBS24X20BK Heat-Shrink Tubing?
The Cembre 2811112 (TBS24X20BK) is a professional Termoblock heat-shrink tubing designed to provide reliable electrical insulation, strain relief and mechanical protection for cables, conductors and electrical connections. Manufactured from halogen-free, flame-retardant polyolefin with a 2:1 shrink ratio, it offers excellent durability and long-term performance in demanding industrial and commercial environments.
Supplied as a 20 metre black coil, the tubing features an internal diameter of 2.5 mm before shrinking and approximately 1.0 mm after shrinking, making it ideal for protecting small cable assemblies, wire terminations and electrical harnesses.
As part of Cembre's trusted Termoblock (TBS) range, the 2811112 is widely used by panel builders, OEM manufacturers, electrical contractors and maintenance engineers for dependable cable insulation and protection.
Provides insulation, strain relief and mechanical protection.
Excellent dielectric strength and abrasion resistance.
Suitable for industrial, commercial and OEM electrical installations.
Key Features
Manufacturer Part Number: 2811112
Cembre Product Code: TBS24X20BK
Heat-shrink tubing.
Internal diameter before shrink: 2.5 mm.
Internal diameter after shrink: 1.0 mm.
Wall thickness after shrink: 0.45 mm.
Coil length: 20 m.
Colour: Black.
Reliable Heat-Shrink Protection
Cembre Termoblock heat-shrink tubing provides dependable insulation, mechanical protection and strain relief for electrical wiring, terminals and cable assemblies. The tubing shrinks tightly around components to protect against abrasion, moisture and mechanical stress while maintaining excellent electrical insulation properties.
Its flame-retardant, halogen-free polyolefin construction and compliance with recognised industry standards make it suitable for industrial control panels, machinery, automation systems and OEM electrical equipment.
Typical Applications
Industrial control panels.
Electrical wiring and cable assemblies.
Terminal insulation.
Wire harness protection.
OEM electrical equipment.
General electrical maintenance and repair.
Technical Specifications
MPN
2811112
Product Code
TBS24X20BK
Series
Termoblock (TBS)
Product Type
Heat-shrink tubing
Material
Halogen-free flame-retardant polyolefin
Shrink Ratio
2:1
Internal Diameter (Before Shrink)
2.5 mm
Internal Diameter (After Shrink)
1.0 mm
Wall Thickness After Shrink
0.45 mm
Coil Length
20 m
Colour
Black
Operating Temperature
-55°C to +125°C
Minimum Shrink Temperature
70°C
Full Shrink Temperature
110°C
Dielectric Strength
15 kV/mm
Standards
UL Approved, RoHS Compliant
HS Code
39173200
Country of Manufacture
China
Frequently Asked Questions
What is the Cembre 2811112 used for?
It is used to insulate, protect and provide strain relief for electrical cables, conductors and electrical terminations.
What is the Cembre product code?
The manufacturer's product code is TBS24X20BK.
What size cable does it fit?
The tubing has an internal diameter of 2.5 mm before shrinking and approximately 1.0 mm after shrinking.
What material is the tubing made from?
It is manufactured from halogen-free, flame-retardant polyolefin with a 2:1 shrink ratio.
What operating temperature range does it support?
The tubing is suitable for continuous operation between -55°C and +125°C.
Trusted by Electrical Professionals Worldwide
Cembre Termoblock heat-shrink tubing is trusted by panel builders, electrical contractors and OEM manufacturers for delivering reliable insulation, mechanical protection and long-lasting performance in demanding industrial environments.
MPN
2811112
Product Code
TBS24X20BK
Series
Termoblock (TBS)
Product Type
Heat-shrink tubing
Material
Halogen-free flame-retardant polyolefin
Shrink Ratio
2:1
Internal Diameter (Before Shrink)
2.5 mm
Internal Diameter (After Shrink)
1.0 mm
Wall Thickness After Shrink
0.45 mm
Coil Length
20 m
Colour
Black
Operating Temperature
-55°C to +125°C
Minimum Shrink Temperature
70°C
Full Shrink Temperature
110°C
Dielectric Strength
15 kV/mm
Standards
UL Approved, RoHS Compliant
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.
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...
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...