The product 178639 from Eaton is an accessory for electrical installations, specifically designed for horizontal partitioning behind the NZM4. It serves to separate the connection area from the busbar area, ensuring a safe and efficient installation. With a field width and depth of 800 millimeters each, it provides ample space for integration into existing systems. The extension device and remote drive of the NZM4 allow for user-friendly handling and increase flexibility in usage. The product is made of high-quality steel, ensuring durability and stability. With a height of 43.2 millimeters and a width of 789 millimeters, it fits into various installation environments. The silver finish in stainless steel look gives the accessory a modern and appealing aesthetic that harmoniously integrates into technical environments. This accessory is a reliable solution for professionals who value quality and functionality.