Threaded busbar connector STB 50-3 Al/Cu 87360 SIMBLOCK, blue 81003003

Rail-mounted threaded connectors – reliable Al/Cu connections

The STB 50-3 Al/Cu threaded rail connector is a component designed for safe and durable connection of aluminum and copper wires. This product from SIMBLOCK, a renowned manufacturer of electrical equipment, is widely used in construction, industry, automation, and renewable energy installations. Thanks to the ability to connect different metals, the connector minimizes the risk of galvanic corrosion and ensures a stable electrical connection.

Design and application

The STB 50-3 connector is designed for easy mounting on a TS 35 rail or 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). The unique core design and the ribbing of the housing effectively dissipate heat, preventing the connection from overheating even under heavy load. Thick housing walls guarantee stability and resistance to deformation during wire tightening. Additionally, the Allen key screws with a fine thread provide strong and secure clamping.

Advantages and benefits

• Versatility: The ability to connect aluminum and copper wires in one connector eliminates the need for additional adapters and simplifies installation.
• Safety: The UL 486E certificate confirms a high standard of safety and connection reliability.
• Durability: The solid construction made of high-quality materials ensures long-term operation even in harsh environmental conditions.
• Effective heat dissipation: Prevents overheating of connections, which translates to increased safety and installation life.
• Easy installation: The intuitive design facilitates and speeds up the installation process, saving time and labor costs.
• Touch protection: The shape of the housing minimizes the risk of accidental contact with live parts during installation and operation.
• Rated voltage: Up to 1000 V AC/DC – a wide range of applications in various electrical installations.
• Rated current: Up to 150 A for aluminum and copper wires – possibility of use in circuits with high load.