Fuse switch disconnector, 3-pole switchable, new design for secondary protection of transformers up to 500kVA for NH fuses GTR 722A max., 400V AC, and NH3 isolating blades up to 1000A The 3NJ4 fuse switch disconnectors for low-voltage distribution. The 1- or 3-pole switchable 3NJ4 fuse switch disconnectors can be used in low-voltage distributors, network and transformer stations and cable distribution cabinets. The Siemens 3NJ4 fuse switch disconnectors are characterized above all by: 1. Compliance with the provisions of IEC/EN 60439-1 and IEC/EN 60947-3. 2. Voltage levels up to AC 690 V. 3. Parking position for maintenance work. 4. Vertical and horizontal installation position. 5. Climate resistance. 6. Protection class IP30 with closed handle inserts, IP10 with open handle inserts. www.siemens.de/schaltgeraete. Siemens offers a comprehensive portfolio of protection, switching, measuring and monitoring devices, distribution systems as well as switches and socket outlets for safe, efficient electrical infrastructure in buildings and industry.
