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2720980 Cembre MTMA70-50-GC ALUMINIUM CONNECTOR
Cembre MTMA70-50-GC aluminium reducer compression through connector for reducing 70 mm² to 50 mm² aluminium conductors with grease-filled barrel and central stop.
£15.36
Why Choose the Cembre MTMA70-50-GC Aluminium Reducer Through Connector?
The Cembre 2720980 MTMA70-50-GC is a premium aluminium reducer compression through connector (straight splice) designed to create secure, permanent electrical joints between 70 mm² and 50 mm² aluminium conductors. Manufactured by Cembre, it provides dependable electrical performance for industrial, utility and power distribution applications.
Part of the trusted Cembre MTMA-GC series, the connector is manufactured from EN AW-1050A aluminium with a purity exceeding 99.5%. The blind barrel incorporates an integrated central stop together with corrosion-inhibiting grease and TEROSTAT VII sealing compound to minimise oxidation while ensuring reliable long-term electrical performance.
Designed for reducing cable connections between 70 mm² and 50 mm² aluminium conductors, the MTMA70-50-GC is ideal for utilities, industrial maintenance, switchgear manufacture, panel builders and electrical contractors requiring dependable aluminium cable transitions for installations up to 18/30 kV (33 kV system).
Key Advantages
- Designed for reliable 70 mm² to 50 mm² aluminium conductor reduction.
- Manufactured from 99.5%+ purity EN AW-1050A aluminium.
- Grease-filled barrel protects against oxidation and corrosion.
- Integrated central stop ensures accurate conductor positioning.
- Suitable for industrial, utility and power distribution applications.
- Provides low electrical resistance with excellent mechanical strength.
Key Features
- Cembre MTMA70-50-GC aluminium reducer connector.
- Manufacturer Part Number: 2720980.
- Suitable for reducing from 70 mm² to 50 mm² aluminium conductors.
- Blind through connector with closed barrel construction.
- Filled with corrosion-resistant Nilena grease and TEROSTAT VII sealing compound.
- Deep indent compression crimp geometry.
- Integrated central stop for accurate conductor insertion.
- Operating temperature: -50°C to +150°C.
Reliable Aluminium Cable Connections
Compression reducer connectors provide permanent, low-resistance electrical joints between different sizes of aluminium conductors. When installed using approved Cembre compression tooling and dies, they deliver excellent electrical conductivity together with outstanding mechanical retention and long-term reliability.
The MTMA70-50-GC incorporates a grease-filled barrel, sealing compound and integrated conductor stop to minimise oxidation and moisture ingress, making it suitable for industrial electrical installations, substations, switchgear and utility distribution networks.
Typical Applications
- Industrial electrical installations.
- Power distribution systems.
- Utility infrastructure projects.
- Reducing aluminium cable connections.
- Switchgear and substations.
- Electrical maintenance and cable repairs.
Technical Specifications
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| Suitable Conductor Material | Aluminium | |
|---|---|---|
| Conductor Size | 70 mm² | |
| Material | Aluminium | |
| Device Type | Aluminium Lug | |
| Series | MTMA-GC | |
| Manufacturer Part Number | 2720980 | |
| Product type | Aluminium reducer compression through connector | |
| Conductor size | 70 mm² to 50 mm² aluminium | |
| Material | EN AW-1050A aluminium (>99.5% purity) | |
| Largest internal diameter | 11.0 mm | |
| Smallest internal diameter | 9.0 mm | |
| Overall length | 106.5 mm | |
| Cable stripping length | 57.5 mm | |
| Voltage class | Up to 18/30 kV (33 kV system) | |
| Operating temperature | -50°C to +150°C | |
| Compliance | DIN 1712/1976 Part 3, EN 61238-1 | |
| HS Code | 85369010 | |
| Country of Manufacture | United Kingdom (includes NI) |
Frequently Asked Questions
What is the Cembre 2720980 used for?
It is an aluminium reducer compression through connector designed to permanently join 70 mm² and 50 mm² aluminium conductors.
What conductor sizes does this connector support?
The MTMA70-50-GC is designed for reducing from 70 mm² aluminium cable to 50 mm² aluminium cable.
Does the connector contain anti-oxidation grease?
Yes. The connector is pre-filled with Nilena corrosion-inhibiting grease and TEROSTAT VII sealing compound to minimise oxidation and maximise long-term electrical performance.
Does the connector include a central stop?
Yes. The integrated central stop ensures both conductors are correctly positioned before compression.
Where is this connector typically installed?
It is commonly used in industrial electrical systems, utility networks, switchgear, substations and electrical distribution installations.
Trusted by Electrical Professionals Worldwide
Cembre aluminium compression connectors are trusted worldwide by electrical contractors, utilities and industrial engineers for delivering secure conductor joints, excellent electrical performance and exceptional long-term durability.
