KLAU Tubular Screw Sleeve 10mm² 552R with Solder Hole for Conductor Connection

In control cabinets and industrial machinery, electricians often need to join two 10 mm² copper conductors securely without bulky terminal blocks. The KLAU 552R tubular screw sleeve provides a compact, vibration-resistant inline connection. Its nickel-plated brass body features two screw terminals and an integrated solder hole, making it ideal for tight installations where space is limited and reliability is critical.

Key specifications

• Conductor cross-section: 10 mm²
• Connection type: screw terminal
• Connector design: tubular sleeve
• Special feature: integrated solder hole
• Conductor capacity: 2 (for connecting two conductor ends)
• Material: brass, nickel-plated
• Insulation: uninsulated
• Rated voltage: up to 1000 V (application dependent)
• Rated current: up to 57 A (based on 10 mm² copper conductor)
• Mounting type: inline / free-hanging
• Operating temperature range: -40°C to +120°C
• Standard compliance: DIN EN 60999-1
• Colour: metallic (silver/brass)

Why choose it

The 552R offers a secure, vibration-resistant mechanical and electrical connection. The solder hole allows for additional soldering if required, while the screw terminals ensure a firm grip on stranded or solid conductors. Its compact tubular design saves space compared to traditional terminal blocks, and the nickel-plated brass construction provides excellent conductivity and corrosion resistance.

Ideal use cases

• Joining two 10 mm² conductors in control cabinets
• Inline splicing in industrial machinery wiring
• Connecting conductors in junction boxes where space is limited

Good to know

The sleeve is uninsulated, so appropriate insulation measures must be taken after installation. It complies with DIN EN 60999-1, ensuring safety and performance in demanding electrical applications.