Cembre 2590296 HNN3 Crimpstar mechanical ratchet crimping tool for pre-insulated electrical connectors from 1.5 mm² to 10 mm².
£94.50
The Cembre 2590296 HNN3 is a professional mechanical ratchet crimping tool designed for the reliable installation of pre-insulated electrical connectors. As part of the renowned Cembre Crimpstar® series, it delivers accurate, repeatable crimps for industrial electrical installations, panel building and maintenance applications.
The HNN3 features a precision factory-set ratchet mechanism that ensures every crimping cycle is fully completed before the handles release. Its ergonomic moulded grips and toggle-action leverage reduce operator effort while maintaining consistently high-quality electrical terminations, making it an ideal choice for professional electricians and OEM manufacturers.
Suitable for 1.5 mm² to 10 mm² pre-insulated connectors, the Cembre HNN3 offers dependable performance for electrical control panels, industrial automation equipment, switchgear and cable assembly work requiring secure, long-lasting electrical connections.
Professional ratchet crimping tools provide consistent compression of electrical connectors, creating 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® HNN3 is trusted by electricians, panel builders and industrial maintenance engineers for dependable cable termination throughout industrial automation, machine building and electrical installation projects.
| Series | Crimpstar® |
|---|---|
| Part Number | 2590296 |
| Product type | Mechanical ratchet crimping tool |
| Application | Pre-insulated electrical connectors |
| Conductor range | 1.5–10 mm² |
| Operation | Manual ratchet |
| Ratchet control | Factory preset |
| Emergency release | Yes |
| Overall length | Approx. 235 mm |
| Handle | Ergonomic moulded grips |
| Construction | High-strength treated steel jaws |
| HS Code | 82032000 |
| Country of Manufacture | Italy |
The HNN3 is designed for crimping 1.5–10 mm² pre-insulated electrical connectors with consistent professional results.
It is suitable for 1.5 mm² to 10 mm² pre-insulated connectors.
Yes. The factory-set ratchet ensures every crimp is completed before the handles automatically release.
Yes. The HNN3 includes an emergency release lever allowing the jaws to be opened if necessary 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 installations and automation systems.
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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...