Cembre 2145853 BKY-M4 blue reinforced insulated ring terminal for 1.5–2.5 mm² copper conductors with M4 stud connection for industrial electrical installations.
£0.21
The Cembre 2145853 BKY-M4 is a premium blue reinforced insulated ring terminal designed to provide secure, vibration-resistant electrical connections in demanding industrial and commercial environments. Manufactured by Cembre, this terminal accommodates 1.5–2.5 mm² copper conductors and features an M4 (4.3 mm) stud connection, making it ideal for electrical control panels, switchgear, industrial machinery and OEM automation equipment.
Manufactured from high-purity electrolytic copper with a corrosion-resistant electrolytic tin-plated finish, the BKY-M4 incorporates Cembre's reinforced anti-vibration technology. A copper reinforcing sleeve positioned between the barrel and insulation deforms during crimping to produce exceptional mechanical strength, improved conductor retention and long-term electrical reliability.
The halogen-free Polyamide PA6.6 insulation features a funnel-shaped entry that simplifies conductor insertion while preventing strand damage during installation. Designed for continuous vibration and mechanical stress, the Cembre 2145853 delivers dependable long-term performance for professional electrical installations.
The BKY reinforced terminal series has been specifically developed for installations subjected to continuous vibration, oscillation and mechanical stress. The integrated copper reinforcing sleeve significantly improves crimp integrity while maintaining excellent electrical conductivity throughout the life of the installation.
Ideal for industrial control panels, switchgear, machinery and automation equipment, the Cembre BKY-M4 provides dependable electrical connections where reliability and long service life are essential.
| Series | BKY Reinforced Ring Terminals |
|---|---|
| Manufacturer Part Number | 2145853 |
| Alternative SKU | BKY-M4 |
| Product type | Reinforced insulated ring terminal |
| Conductor size | 1.5–2.5 mm² |
| Stud size | M4 (4.3 mm) |
| Entry diameter | 5.2 mm |
| Ring width | 8.5 mm |
| Barrel to centre stud | 7.8 mm |
| Centre stud to ring tip | 4 mm |
| Overall length | 22.8 mm |
| Material | Tin-plated electrolytic copper |
| Insulation | Halogen-free Polyamide PA6.6 |
| Operating temperature | -20°C to +105°C |
| Colour | Blue |
| Packed quantity | 100 |
| HS Code | 85369010 |
| Country of Manufacture | Taiwan |
It is a reinforced insulated ring terminal designed to provide secure bolted electrical connections for 1.5–2.5 mm² copper conductors.
The BKY-M4 is suitable for copper conductors from 1.5 mm² to 2.5 mm².
The terminal is designed for M4 (4.3 mm) stud connections.
The integrated copper reinforcing sleeve improves mechanical strength, conductor retention and vibration resistance in demanding industrial environments.
It is widely used in control panels, switchgear, industrial machinery, automation systems and electrical distribution equipment.
Cembre reinforced ring terminals are trusted by electrical contractors, panel builders and OEM manufacturers for reliable electrical performance, exceptional vibration resistance and long-term durability.
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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...