Terminal block screw type STB 50-3X Al/Cu 87330 SIMBLOCK, grey/blue/green 81004020

Universal busbar connector for aluminum and copper connections

This three-pole STB 50-3X SIMBLOCK busbar connector from SIMET is a solid and versatile solution for safely connecting aluminum and copper wires in electrical installations. Designed for mounting on TS 35 rail or a mounting plate, it provides a stable connection and easy installation. Its construction allows for the connection of both solid and stranded wires with ferrules, increasing its flexibility in various applications.

Construction and application

The STB 50-3X connector allows the connection of wires with a cross-section from 4 mm² to 50 mm² (depending on the wire type – stranded wire with ferrule or solid wire). This makes it ideal for branching installations, connecting devices with different power consumption, and creating measurement points. Made of high-quality materials, it guarantees reliability and long-term use. The color scheme of the housing (gray/blue/green) facilitates the identification of individual circuits in the installation.

Key features and benefits

• Material versatility: Ability to connect aluminum (Al) and copper (Cu) wires without the risk of electrochemical corrosion. This is particularly important when modernizing installations where different types of wires may be present.
• Wide range of cross-sections: Supports wires with a cross-section from 4 mm² to 50 mm², allowing adaptation to various installation needs.
• Safety: Rated voltage of 1000 V AC/DC and rated current of 150 A ensure safe operation of the electrical installation.
• Easy installation: Construction adapted for quick mounting on a standard TS 35 rail or mounting plate – saving time during installation.
• Durability: Made of high-quality thermoplastic materials with flammability class V0, which ensures resistance to high temperatures and fire.
• Compliance with standards: Meets the requirements of IEC 60947-7-1 and IEC 61238-1 standards, confirming its safety and reliability.
• Connection flexibility: Possibility to connect both solid and stranded wires with ferrules - adaptation to different types of wires available on the market.