Cembre 2590292 HNN4 Crimpstar mechanical ratchet crimping tool for pre-insulated electrical connectors from 10 mm² to 16 mm².
£89.80
The Cembre 2590292 HNN4 is a professional mechanical ratchet crimping tool engineered for the installation of pre-insulated electrical connectors. Part of the renowned Cembre Crimpstar® series, it delivers precise, repeatable crimps for industrial electrical installations, panel building and maintenance applications.
Designed with a factory-set ratchet mechanism, the HNN4 ensures that every crimping cycle is completed before the tool releases, helping to eliminate incomplete crimps and providing consistently reliable electrical connections. Its ergonomic moulded handles and toggle-action leverage reduce operator effort while maintaining excellent crimp quality.
Suitable for 10 mm² to 16 mm² pre-insulated connectors, the Cembre HNN4 is ideal for professional electricians, panel builders, OEM manufacturers and industrial maintenance engineers requiring dependable cable termination performance.
Professional ratchet crimping tools deliver consistent compression of cable terminals, helping create secure mechanical retention and low-resistance electrical connections. The controlled ratchet mechanism ensures every crimp is completed correctly, improving installation quality and long-term reliability.
The Cembre Crimpstar® HNN4 is trusted by electrical contractors, panel builders and maintenance engineers for professional cable termination throughout industrial automation, power distribution and OEM manufacturing.
| Series | Crimpstar® |
|---|---|
| Part Number | 2590292 |
| Product type | Mechanical ratchet crimping tool |
| Application | Pre-insulated electrical connectors |
| Conductor range | 10–16 mm² |
| Operation | Manual ratchet |
| Ratchet control | Factory preset |
| Emergency release | Yes |
| Overall length | Approx. 235 mm |
| Width | Approx. 19 mm |
| Handle | Ergonomic moulded grips |
| HS Code | 82032000 |
| Country of Manufacture | Italy |
The HNN4 is designed for crimping 10–16 mm² pre-insulated electrical connectors with consistent professional results.
It is suitable for 10 mm² to 16 mm² pre-insulated connectors.
Yes. The factory-set ratchet ensures every crimp is completed before the handles automatically release.
Yes. The HNN4 includes an emergency release device allowing the jaws to be opened if required during operation.
The tool is widely used by electricians, panel builders, industrial maintenance engineers and OEM manufacturers.
Cembre Crimpstar® crimping tools are trusted worldwide for producing accurate, repeatable and dependable cable terminations across industrial electrical and automation installations.
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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...