3NP1143-1DA20

The Siemens 3NP1143-1DA20 represents a durable fuse switch disconnector intended for various electrical installations. With its three-pole configuration, this device is versatile for different mounting orientations. It supports installation on a mounting plate and can be positioned horizontally or vertically depending on specific application requirements.

The rated insulation voltage of this disconnector is set at 690V, ensuring it meets high safety and operational standards. It is capable of withstanding a rated main circuit current of 250 Amps, making it suitable for robust applications in industrial environments. Additionally, the unit boasts a Pollution Degree rating of 3, indicating its reliability in environments that may have some environmental pollutants.

In terms of protection, the 3NP1143-1DA20 has a maximum IP rating of IP40, providing a reasonable level of dust ingress protection. The operational temperature range extends from -25 to 55 degrees Celsius, allowing it to function effectively in varying ambient conditions. For storage, it can be kept within a temperature range of -50 to 80 degrees Celsius, offering flexibility for different conditions during handling or storage. With its box terminal connection device, the design focuses on providing ease of connectivity for electrical cables.