Siemens 3NP1 Series Fuse Switch Disconnector, Floor Mount, Screw Terminal - 3NP1143-1DA10 This fuse switch disconnector provides effective electrical isolation and protection for industrial applications. Its 3-pole design and robust construction support high performance, making it essential for automation and electrical distribution systems. With a maximum current rating of 250A, it ensures safety and efficiency across various environments. Features & Benefits • Designed for floor mounting, streamlining installation
• Accommodates NH0 and NH1 fuse sizes for flexible usage
• Suitable for voltages up to 690V, enhancing adaptability
• Maximum let-through current of 32kA protects downstream equipment
• Supports connections for conductors up to 150mm² for broad compatibility Applications • Facilitates effective load disconnection in electrical panels
• Utilised for safe isolation during maintenance and repair work
• Acts as a key safety switch in automated systems What is the maximum number of operating cycles before maintenance is needed? The typical mechanical service life is approximately 1,600 operating cycles, ensuring longevity under normal conditions. What is the recommended tightening torque for the terminals? The tightening torque for screw-type terminals should be between 10N·m and 12N·m to ensure optimal connection without risk of damage. How does it perform under high ambient temperatures? It operates efficiently at a maximum temperature of 55°C, making it suitable for warmer environments without compromising performance.