The product with manufacturer's number 20319622 from Prysmian Kabel und Systeme is a ship cable of type LM-HF 4x1,5 RM. It is a halogen-free cable specifically designed for use in ships and other marine applications. The cable features four conductors, each with a cross-section of 1.5 mm², and is not equipped with an integrated protective earth (PE) conductor. The designation RM indicates a special mechanical and electrical design suitable for the requirements of shipbuilding.

Applications
This cable is intended for use in electrical installations on board ships, particularly in areas where high fire safety is required. Due to its halogen-free composition, no toxic smoke or harmful halogen-containing vapors are released in the event of a fire, enhancing the safety of crew and passengers. It is suitable for powering lighting, controls, communication systems, and other electrical devices on board.

Functions and Features in Detail
The cable consists of four individual conductors, each with a cross-sectional area of 1.5 mm². This sizing allows sufficient current transmission for typical onboard loads without excessive voltage drop. The use of halogen-free material improves fire behavior and reduces the risk of toxic byproducts. The cable does not include a protective earth (PE) conductor, meaning it must be used in systems where the PE conductor is laid separately or protected by another safety measure (e.g., separation protection).

Technology Explained Simply
The designation LM-HF" refers to a cable material that is halogen-free (HF), meaning it does not release halogen-containing gases when heated or during a fire. This is especially important in enclosed spaces such as ships, where air quality and passenger safety are paramount. The abbreviation "RM refers to the mechanical and electrical design developed specifically for the requirements of shipbuilding. The cable is not designed for outdoor use or in damp environments without additional protection, as no information on protection class (e.g., IP) is available.

Compatibility and Accessories
The cable is designed for use in electrical systems on ships and should be combined with appropriate installation components such as cable lugs, connectors, or switchboards that are also suitable for marine applications. Since it does not include a protective earth conductor, a separate PE conductor must be laid in parallel during installation to ensure electrical safety. The use of suitable cable ties, protective conduits, or cable protection sleeves is recommended to prevent mechanical damage.

Installation and Mounting
Installation must comply with applicable regulations for electrical installations on board ships. The cable should be routed in appropriate protective conduits or cable channels to shield it from mechanical stress, moisture, or chemical influences. Connections of the conductors should be made using suitable cable lugs or connectors approved for marine use. During installation, ensure that the protective earth conductor is laid separately, as the cable itself does not contain an integrated PE conductor.

Operational Advantages
The use of this halogen-free ship cable enhances onboard safety, especially in the event of a fire, as no toxic gases are released. Constant conductivity and mechanical robustness ensure reliable power supply. Its suitability for marine applications is guaranteed by the cable’s special design, although installation must comply with applicable standards and regulations.

Note on Product Data
The available sources do not provide further technical details such as protection class, operating voltage, temperature range, or exact material composition. The information is limited to the cable designation LM-HF 4x1,5 RM, its halogen-free design, and the fact that it is not equipped with a protective earth conductor. This information is sufficient to describe the basic function and application area of the product. Additional technical data, such as permissible operating voltage or mechanical load capacity, are not included in the sources and therefore not mentioned in the text.