Threaded busbar connector STB 50-3 Al/Cu 87360 SIMBLOCK, grey 81003002

Rail-mounted threaded connectors for Al/Cu connections

The STB 50-3 Al/Cu threaded rail connector is a reliable solution for connecting aluminum and copper wires, designed for installers and end-users. This product, from SIMBLOCK by SIMET S.A., combines solid construction, safe operation, and easy installation. It is a key element in building efficient and safe electrical installations, both in construction, industry, and renewable energy systems.

Design and application

The STB 50-3 connector is designed for mounting on TS 35 rail or a mounting plate. It allows connection of up to six wires with a cross-section from 6 mm² to 50 mm² (solid) or from 4 mm² to 35 mm² (stranded with ferrule). Its design allows for a safe and durable connection of aluminum and copper wires, eliminating the risk of electrochemical corrosion, which often occurs with direct contact between these metals. This ensures long-term reliability of the installation.

Advantages and benefits

• Versatility: The ability to connect aluminum and copper wires in one connector eliminates the need for additional connecting elements.
• Safety: High-quality materials and precise workmanship guarantee a stable electrical connection and protection against short circuits and overloads. The connector has a UL 486E certificate confirming its compliance with stringent safety standards.
• Effective heat dissipation: The unique shape of the core and the ribbing of the housing ensure effective heat dissipation generated during current flow, which translates to a longer connection life.
• Durability: Thick housing walls prevent deformation during tightening of the wires, and the fine-pitch screw thread ensures strong clamping.
• Easy installation: The connector's design facilitates the installer's work, and the ability to mark wires increases the readability of the installation.
• Measurement connector application: Additional space for a measurement connector (in models from 95 mm² to 300 mm²) allows for monitoring the condition of the connections and monitoring the entire installation.
• Touch protection: The shape of the housing protects the fitter's hands during work.

The STB 50-3 Al/Cu connector is an investment in a safe and reliable electrical installation that will meet the expectations of even the most demanding users. Its solid construction and versatility make it an ideal choice for both professional installers and end-users who care about the safety of their home or company.