General
Ø hole size	14,5 mm

The SV lock nut M12, manufacturer part number 3591060, from Rittal is a system accessory for mounting in enclosures and industrial electrical installations. It serves as a self-retaining nut with a knurled collar, designed to be inserted into drilled holes in busbars made of E-Cu (electro-copper). The nut enables secure and durable fastening of screws or cable tie systems, with the hole having a diameter of 14.5 mm. The construction with a knurled collar ensures a secure hold in the busbar without requiring additional retaining elements.

Applications

The lock nut is specifically designed for use in industrial enclosures and distribution cabinets, where stable and reliable fastening of components to busbars is required. It is commonly used in electrical installations for mounting fuses, power switches, cable tie systems, or other components that are attached to a busbar. Use in switchgear with E-Cu busbars is standard, with the nut ensuring mechanical stability.

Functions and Equipment in Detail

The SV lock nut M12 is a self-retaining nut that, once inserted into the hole in the busbar, is held securely in place by the knurled collar. The knurled collar ensures that the nut does not slip out of the hole, even under vibration or mechanical stress. The hole with a diameter of 14.5 mm is precisely matched to standard holes in E-Cu busbars, ensuring an exact fit and secure mounting. The nut is designed for screws with an M12 thread, which is a standard size in industrial electrical installations.

Technology Explained Simply

The self-retaining function of the nut relies on the knurled collar, which engages with the walls of the hole to create a mechanical hold. This prevents the nut from shifting or loosening during operation. The 14.5 mm hole is designed for use in standard busbars, typically used in enclosures for power distribution. The nut is simply inserted into the hole and remains securely in place without requiring additional retaining or screwing elements.

Compatibility and Accessories

The lock nut is specifically designed for busbars made of E-Cu and fits into holes with a diameter of 14.5 mm. It is compatible with Rittal busbar models SV3591040 and SV3591050, as stated in the product description. The nut is supplied in a pack of 30 pieces, suitable for mounting in larger enclosures or for series installations.

Mounting and Installation

Installation is performed by simply inserting the lock nut into the pre-drilled opening in the busbar. The hole must have a diameter of 14.5 mm to ensure a secure fit. After insertion, the nut remains in position due to the knurled collar. The M12 threaded screw is then screwed into the nut, completing the component fastening. No additional tools or retaining elements are required, as the nut holds securely on its own.

Advantages in Operation

The SV lock nut M12 provides reliable and durable fastening in busbars without requiring additional retaining elements or screwing components. The self-retaining design reduces mounting time and minimizes the risk of loosening due to vibrations. The 14.5 mm fit ensures precise and secure mounting, meeting the requirements of industrial electrical installations. The pack of 30 pieces enables efficient handling in larger installation projects.