Fuse switch disconnector, 3-pole, switchable, new design
fuse switch disconnector 3-pole switchable, for protection of transformers on the secondary side up to 630 kVA for LV HRC fuses GTR 910 A max., 400 V AC, and NH3 disconnecting blade up to 1250 A The 3NJ4 fuse switch disconnectors for low-voltage distribution. 3NJ4 1-pole and 3-pole in-line fuse switch disconnectors can be installed in low-voltage distribution boards, substations and cable distribution cubicles. Key features of the Siemens 3NJ4 fuse switch disconnectors: 1. Compliance with IEC/EN 60439-1 and IEC/EN 60947-3. 2. Voltage levels up to 690 V AC. 3. Parking position for maintenance. 4. Vertical and horizontal mounting position. 5. Weathering resistance. 6. Degree of protection IP30 with closed fuse carriers, IP10 with open fuse carriers.