OBO Bettermann Vertical Cross Connector 8-10x8-10 mm Electro-Galvanized Steel Type 251 (5312035)

On a rooftop lightning protection installation, two round conductors cross at right angles—one running along the parapet, the other dropping to the ground electrode. The OBO Bettermann Vertical Cross Connector 8-10x8-10 mm clamps them together with two integrated hex screws, ensuring a low-resistance, corrosion-resistant joint that meets DIN EN 62561-1. This Type 251 connector is made of electro-galvanized steel, suitable for outdoor and indoor use, and handles conductor diameters from 8 to 10 mm.

Key specifications

• Connector type: Cross connector for round conductors
• Material: Steel, electro-galvanized (vz)
• Conductor diameter range: 8–10 mm
• Connection method: Two integrated hex screws
• Standard compliance: DIN EN 62561-1
• Application: Lightning protection, earthing, potential equalization
• Mounting orientation: Horizontal and vertical
• Corrosion resistance: High, UV resistant

Why choose it

This cross connector provides a reliable mechanical and electrical connection at conductor intersections, a common weak point in lightning protection systems. The electro-galvanized finish offers long-term durability against weathering, while the screw terminals allow for quick installation without special tools. Its compliance with DIN EN 62561-1 ensures it meets stringent safety requirements for lightning protection components.

Ideal use cases

• Connecting crossing round conductors in lightning protection systems
• Earthing and potential equalization networks
• Outdoor installations on roofs, facades, and industrial structures
• Indoor applications where conductor crossings occur

Good to know

The connector is designed for conductors with a diameter of 8 to 10 mm. Always tighten the hex screws to the manufacturer's recommended torque to ensure a secure and low-resistance connection. For installations in highly corrosive environments, consider additional protective measures, though the electro-galvanized coating provides good resistance for most conditions.