Why Choose the Cembre 2050030 RF-M3 Insulated Ring Terminal?
The Cembre 2050030 (RF-M3) is a premium red PVC insulated ring terminal designed to provide safe, secure and reliable electrical terminations for copper conductors. Manufactured from high-purity electrolytic copper with a durable tin-plated finish, it delivers excellent electrical conductivity while offering long-term protection against corrosion.
Designed for professional electricians, panel builders and industrial maintenance engineers, the RF-M3 ring terminal features a robust PVC insulated sleeve with a funnel entry to simplify cable insertion and speed up installation. Its high-quality construction ensures dependable performance in demanding commercial and industrial environments.
Suitable for 0.25–1.5 mm² conductors and M3 stud connections, the Cembre 2050030 is widely used in control panels, industrial machinery, electrical installations and OEM equipment where reliable crimped terminations are essential.
Key Advantages
Professional PVC insulated ring terminal.
Suitable for 0.25–1.5 mm² copper conductors.
M3 fixing hole for secure electrical connections.
Electrolytic copper body with durable tin plating.
Ideal for industrial, commercial and OEM electrical applications.
Key Features
Manufacturer: Cembre
Model: 2050030
Alternative SKU: RF-M3
Product type: PVC insulated ring terminal
Conductor size: 0.25–1.5 mm²
Stud size: M3
Insulation colour: Red
Electrolytic copper conductor with tin-plated finish.
Reliable Electrical Connections for Industrial Wiring
Insulated ring terminals provide secure mechanical fixing together with dependable electrical performance for low-voltage wiring systems. Their enclosed ring design prevents accidental disconnection from terminal studs while the insulated sleeve improves installation safety and cable identification.
The Cembre RF-M3 series is widely used by panel builders, machine manufacturers and electrical contractors requiring high-quality crimp terminals for reliable long-term operation in industrial environments.
Typical Applications
Industrial control panels.
Electrical switchgear.
Machine building.
PLC and automation systems.
Commercial electrical installations.
Maintenance and repair work.
Technical Specifications
Alternative part number
RF-M3
Product type
PVC insulated ring terminal
Conductor material
Electrolytic copper (99.95%+ purity)
Surface finish
Tin plated
Insulation material
PVC
Insulation colour
Red
Cable cross section
0.25–1.5 mm²
Stud size
M3
Operating temperature
-20°C to +80°C (90°C short duration)
Fire classification
UL94 V0
Installation method
Compression crimp
HS Code
85369010
Country of Manufacture
Italy
Frequently Asked Questions
What is the Cembre 2050030 used for?
It is used to create secure crimped ring terminations on copper conductors for electrical equipment and industrial wiring.
What cable sizes are supported?
The RF-M3 is suitable for copper conductors from 0.25 mm² to 1.5 mm².
What stud size does this terminal fit?
The terminal is designed for M3 fixing studs.
Why is the terminal insulated?
The PVC insulation improves electrical safety, protects the crimp area and assists with conductor size identification.
Where is this ring terminal commonly used?
It is widely used in industrial control panels, automation equipment, switchgear, machinery and commercial electrical installations.
Trusted by Electrical Professionals Worldwide
Cembre insulated crimp terminals are trusted by panel builders, electrical contractors and OEM manufacturers for delivering dependable electrical connections and consistent installation quality.
Alternative part number
RF-M3
Product type
PVC insulated ring terminal
Conductor material
Electrolytic copper (99.95%+ purity)
Surface finish
Tin plated
Insulation material
PVC
Insulation colour
Red
Cable cross section
0.25–1.5 mm²
Stud size
M3
Operating temperature
-20°C to +80°C (90°C short duration)
Fire classification
UL94 V0
Installation method
Compression crimp
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.
What product ranges do you supply
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...