General
Colour	Yellow/Green

The Helavia A4x30-C JV rubber grommets from Ses-Sterling are specifically designed for use in electrical and installation technology. They serve as a cable gland for secure and tight fixation of cables in electrical devices, switch cabinets, or other installation components. The grommets are available in the colour yellow/green, identifying them as markings for protective conductors or earth conductors in the electrical system. The designation A4x30-C JV indicates the technical dimensions and specific design, with the grommet length being 30 mm and the inner diameter designed for cables with a cross-section up to approximately 4 mm². The grommets are supplied in a pack of 100 pieces, making them suitable for series assembly and professional installations.

Applications
Rubber grommets of type Helavia A4x30-C JV are typically used in the field of electrical installation technology, particularly where mechanical and electrical insulation of cables at entry and exit points is required. They are used in switch enclosures, distribution boxes, sockets, switches, and other electrical assemblies where cables pass through enclosure walls. The yellow/green colour identifies them as protective conductor grommets, intended for the installation of protective conductors in accordance with VDE and EN standards. The grommets are designed for indoor use, with a temperature resistance from -30 °C to 90 °C enabling use in environments with varying climatic conditions.

Functions and Equipment in Detail
The grommets are made of an elastic rubber material, ensuring a tight seal between cable and enclosure. The shape is cylindrical with a conical transition, enabling secure and slip-resistant cable fixation. The rubber grommet is slipped over the cable and inserted into the enclosure hole, where the elastic pressure provides mechanical fixation and simultaneous electrical insulation. The yellow/green colour is standard for protective conductors, supporting compliance with safety regulations in electrical installations. The grommets are not intended for use in explosive environments or under extreme mechanical stress.

Technology Explained Simply
The designation A4x30-C JV describes the technical design: A4 refers to the nominal diameter of the grommet, designed for cables with a maximum diameter of approximately 4 mm. The length is 30 mm, sufficient to ensure adequate sealing and fixation. The C indicates the shape of the grommet (cylindrical with conical transition), and JV denotes the yellow/green colour. The grommets are made of an elastic material that conforms around the cable during installation, ensuring a tight fit. The temperature resistance from -30 °C to 90 °C allows use in a wide range of environments, from cool storage rooms to warm operating rooms.

Compatibility and Accessories
The grommets are suitable for cables with a maximum diameter of approximately 4 mm² and fit into holes of corresponding diameter. They are specifically designed for use in electrical devices and switchgear where secure and tight cable routing is required. The yellow/green colour makes them the standard for protective conductors, used in accordance with VDE 0100 and EN 60364-4-41 in electrical installations. There are no specific accessories designed to be combined directly with this grommet, as it functions as a single component for cable fixation.

Installation and Mounting
Installation is carried out by simply sliding the grommet over the cable and then inserting it into the hole in the enclosure. The elastic shape ensures the grommet conforms around the cable, providing a tight fit. It is important that the hole in the enclosure has the correct diameter to ensure optimal fit. The grommets are not intended for use in moving or vibrating systems, as mechanical stress could impair the sealing effect.

Operational Advantages
The Helavia A4x30-C JV rubber grommets provide reliable mechanical fixation and electrical insulation of cables. The yellow/green colour supports clear identification of protective conductors, facilitating compliance with safety regulations. The temperature resistance from -30 °C to 90 °C enables broad application in various environments. The pack of 100 pieces is suitable for professional users who install in larger quantities. The grommets are easy to install and require no additional tools or mounting aids.