General
Connection type	Screw connection
Mounting method	N busbar
Colour	Silver
Transition resistance	< 1 mΩ

The shield connection terminal SK 8 from Phoenix Contact, manufacturer's number 3025163, is a specialized connection component for use in industrial electrical installations. It serves as a transition element between a shielded conductor and an N-busbar, with the shield contact directly placed on the busbar. The terminal is designed for screw connection and enables a secure, mechanically stable, and electrically conductive connection. The color of the terminal is silver, indicating a metallic surface, typical for highly conductive materials in connection technology.

Applications

The SK 8 is primarily used in industrial electrical engineering, where a reliable and durable connection between shielded conductors and busbars is required. This includes, for example, the installation of enclosures, distributors, or control systems, in which shielded cables are used for shielding against interference or grounding. The terminal is designed for use in electrical installations that require high operational safety and low electrical resistance.

Functions and Equipment in Detail

The shield connection terminal SK 8 enables direct placement of the shielded conductor onto the N-busbar, thereby establishing an efficient electrical connection. The transition resistance is less than 1 mΩ, ensuring very low electrical impedance and thus minimal voltage drop during current transmission. This is particularly important for applications requiring high conductivity and minimal energy losses. The terminal is designed for screw connection, which enables a mechanically stable and easy-to-install connection.

Technology Explained Simply

The terminal operates on the principle of direct shield placement onto the busbar. The shielded conductor — for example, a shielded cable — is placed on the busbar and secured using a screw connection. The metallic construction of the terminal ensures optimal electrical contact between the shield and the busbar. The low transition resistance of less than 1 mΩ ensures that no significant voltage losses occur, which is crucial for the functionality of protection and grounding systems.

Compatibility and Accessories

The SK 8 is specifically designed for mounting on N-busbars. Suitable mounting blocks, such as the AB-SK/E-NS 35 (3213111), AB-SK TOP INSULATED (3062074), or AB-SK 65-D (3026900), can be used to facilitate installation or meet specific requirements for insulation or fastening. Additional components such as the N-busbar 10x3 (article number 0402174) or various connection terminals like AKG 4 GNYE (0421029) or AK 4 (0404017) can be used in the same system to realize a complete connection technology.

Installation and Mounting

Mounting is done by securing the terminal to the N-busbar, with the shield contact placed directly on the busbar. The screw connection is then used to securely fix the shielded conductor. Installation requires no additional tools other than a screwdriver or an appropriate wrench. The terminal is designed to ensure a secure and durable connection without requiring additional insulating or fastening elements.

Operational Advantages

The SK 8 provides a reliable and conductive connection between shielded conductors and busbars. The low transition resistance ensures minimal voltage losses and high electrical efficiency. The screw mounting allows for simple and secure installation, which can also be repeated during frequent maintenance or system modifications. The terminal is designed for use in industrial environments where high mechanical and electrical loads may occur.