DEHN Contact Plate M8 with Square Hole 540251

Busbar connections often require a reliable, low-resistance tap-off point that can accommodate square-head bolts without slipping. The DEHN 540251 contact plate solves this by providing a tinned electrolytic copper plate with an M8 threaded connection and a 9 x 9 mm square mounting hole, ensuring a secure fit for square-head bolts such as DIN 603.

Who is it for

Electricians and panel builders who need to create robust electrical connections on busbars or equipotential bonding bars. This plate is suitable for use with M8 bolts and square-head bolts, offering a dependable tap-off point in low-voltage installations.

Main features

• M8 threaded connection for standard bolts
• Square mounting hole (9 x 9 mm) for square-head bolts
• Made from electrolytic copper (E-Cu) for high conductivity
• Tinned surface for corrosion resistance and solderability
• Uninsulated design for direct metal-to-metal contact

Specifications

• Product type: Contact plate
• Connection thread size: M8
• Connection hole type: Threaded
• Mounting hole type: Square
• Square hole dimensions: 9 x 9 mm
• Material: Electrolytic copper (E-Cu)
• Surface treatment: Tinned
• Primary application: Busbar connection
• Secondary application: Electrical tap-off point
• Mounting compatibility: M8 bolts, square-head bolts (e.g., DIN 603)
• Insulation: Uninsulated
• RoHS compliance: Yes
• Number of connection points: 1
• Overall length: 40 mm
• Overall width: 20 mm
• Overall thickness: 10 mm

Tips

Ensure the contact surfaces are clean and free of oxidation before installation. Use appropriate torque when tightening the M8 bolt to avoid damaging the threads. For square-head bolts, verify that the bolt head fits snugly into the 9 x 9 mm square hole to prevent rotation during tightening.