Cembre MTMA300-GC aluminium compression through connector for 300 mm² aluminium conductors with grease-filled barrel and central stop for reliable industrial and utility cable splicing.
£53.50
The Cembre 2720430 MTMA300-GC is a premium aluminium compression through connector (straight splice) designed to provide secure, permanent electrical joints between 300 mm² aluminium conductors. Manufactured by Cembre, it delivers dependable electrical performance for industrial, utility and power distribution applications.
Part of the proven Cembre MTMA-GC series, the connector is manufactured from greater than 99.5% purity aluminium. The blind barrel incorporates an integrated central stop together with corrosion-inhibiting grease and sealing putty to minimise oxidation while ensuring long-term electrical reliability in demanding environments.
Suitable for 300 mm² aluminium conductors, the MTMA300-GC is ideal for electrical contractors, utilities, switchgear manufacturers and industrial maintenance engineers requiring dependable aluminium cable joints for low, medium and high-voltage installations up to 33 kV.
Compression through connectors provide permanent, low-resistance electrical joints for aluminium conductors. When installed using the recommended Cembre compression tooling and dies, they deliver excellent electrical conductivity together with outstanding mechanical retention and long-term reliability.
The MTMA300-GC incorporates a grease-filled barrel, sealing compound and integrated conductor stop to reduce oxidation and moisture ingress, making it suitable for industrial installations, substations and utility power distribution networks operating up to 33 kV.
| Series | MTMA-GC |
|---|---|
| Manufacturer Part Number | 2720430 |
| Product type | Aluminium compression through connector |
| Conductor size | 300 mm² aluminium |
| Material | Aluminium (>99.5% purity) |
| Internal barrel diameter | 22.5 mm |
| Overall length | 144.5 mm |
| Cable stripping length | 78.4 mm |
| Maximum voltage | Up to 33 kV |
| Operating temperature | -50°C to +150°C |
| Crimp geometry | Deep indent |
| Central stop | Yes |
| Grease filled | Yes |
| HS Code | 85369010 |
| Country of Manufacture | United Kingdom (includes NI) |
It is an aluminium compression through connector designed to permanently join 300 mm² aluminium conductors.
The MTMA300-GC is specifically designed for 300 mm² aluminium cables.
Yes. The barrel is pre-filled with high-temperature corrosion-inhibiting grease to minimise oxidation and maintain long-term electrical performance.
Yes. The integrated central stop ensures both conductors are correctly positioned before compression.
It is widely used in industrial electrical systems, substations, utility networks and low to high-voltage power distribution installations.
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.
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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...