Why Choose the Cembre 2397688 CL350-12 Colour-Coded Copper Compression Lug?
The Cembre 2397688, manufacturer reference CL350-12, is a premium long-barrel colour-coded copper compression ring terminal designed for terminating large copper conductors in industrial power distribution, switchgear, renewable energy installations and heavy-duty electrical systems. Manufactured from annealed electrolytic copper with a purity greater than 99.9%, it provides exceptional electrical conductivity together with outstanding mechanical strength and long service life.
The CL Series features an extended barrel that increases conductor contact area while improving pull-out strength after crimping. The bevelled cable entry simplifies conductor insertion and helps prevent strand damage during installation. Unlike conventional inspection-hole terminals, the sealed barrel design helps minimise the ingress of moisture and contaminants, making the terminal particularly suitable for outdoor and demanding industrial environments.
Designed for 350 kcmil (approximately 185 mm²) copper conductors, the CL350-12 incorporates an M12 fixing hole (13.2 mm) together with red colour coding for rapid identification of the correct conductor size and compatible Cembre compression die.
Key Advantages
Professional long-barrel compression lug for copper conductors.
Designed for 350 kcmil (185 mm²) cable terminations.
M12 fixing hole (13.2 mm) for industrial electrical equipment.
Manufactured from annealed electrolytic copper for maximum conductivity.
Long barrel delivers improved conductor retention and pull-out strength.
Sealed barrel construction helps prevent moisture ingress.
Red colour coding simplifies die identification.
Key Features
Cembre CL Series long-barrel colour-coded compression lug.
Manufacturer reference: CL350-12.
Ordering code: 2397688.
Conductor size: 350 kcmil (185 mm²).
Stud size: M12.
Hole diameter: 13.2 mm.
Colour code: Red.
Long-barrel, non-insulated construction.
Closed barrel without inspection hole.
Compatible with approved Cembre compression tooling.
Reliable Cable Termination for Industrial Power Systems
Long-barrel compression lugs provide permanent electrical and mechanical connections between large copper conductors and equipment such as switchgear, transformers, generators and busbars. The extended barrel increases conductor contact area while delivering improved mechanical retention and consistently low electrical resistance after crimping.
The Cembre CL Series combines premium electrolytic copper, precision manufacturing and colour-coded identification to deliver dependable performance across industrial, commercial, renewable energy and utility installations.
Typical Applications
Industrial switchgear and control panels.
Power distribution systems.
Transformer and generator terminations.
Busbar connections.
Renewable energy installations.
Electrical infrastructure projects.
Industrial maintenance and utility networks.
Technical Specifications
Series
CL Series Long-Barrel Compression Lugs
Ordering code
2397688
Product type
Copper compression ring terminal
Conductor material
Copper
Conductor size
350 kcmil
Approximate metric size
185 mm²
Stud size
M12
Hole diameter
13.2 mm
Overall length
98 mm
Palm width
33 mm
Barrel diameter
17.6 mm
Cable stripping length
55 mm
Conductor entry diameter
22.3 mm
Material
Annealed electrolytic copper (>99.9% purity)
Finish
Electrolytic tin plated
Inspection hole
No
Colour code
Red
Die index
36
Operating temperature
-50°C to +150°C
UL standard
UL 486A-486B
RoHS compliant
Yes
HS Code
85369010
Country of Manufacture
Italy
Frequently Asked Questions
What conductor size is the Cembre 2397688 designed for?
The CL350-12 is designed for 350 kcmil (approximately 185 mm²) copper conductors.
What stud size does this terminal fit?
It features an M12 fixing hole with a nominal diameter of 13.2 mm.
Why doesn't this terminal include an inspection hole?
The CL Series uses a sealed long-barrel design that helps minimise the ingress of moisture and contaminants, making it particularly suitable for outdoor and demanding industrial environments.
Why is the terminal colour coded red?
The red colour code enables installers to quickly identify the correct conductor size and compatible Cembre compression die.
What material is the compression lug manufactured from?
The terminal is manufactured from annealed electrolytic copper with an electrolytic tin-plated finish for outstanding conductivity, corrosion resistance and long service life.
Trusted by Electrical Professionals Worldwide
Cembre long-barrel compression terminals are trusted by electrical contractors, OEMs, utilities and industrial maintenance engineers for producing dependable, high-performance conductor terminations in demanding electrical power applications.
Series
CL Series Long-Barrel Compression Lugs
Ordering code
2397688
Product type
Copper compression ring terminal
Conductor material
Copper
Conductor size
350 kcmil
Approximate metric size
185 mm²
Stud size
M12
Hole diameter
13.2 mm
Overall length
98 mm
Palm width
33 mm
Barrel diameter
17.6 mm
Cable stripping length
55 mm
Conductor entry diameter
22.3 mm
Material
Annealed electrolytic copper (>99.9% purity)
Finish
Electrolytic tin plated
Inspection hole
No
Colour code
Red
Die index
36
Operating temperature
-50°C to +150°C
UL standard
UL 486A-486B
RoHS compliant
Yes
HS Code
85369010
Country of Manufacture
Italy
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...