3NP1123-1CA20

Siemens presents the 3NP1123-1CA20, a robust Fuse Switch Disconnector featuring three poles, which is optimized for significant electrical applications. The unit is rated for an insulation voltage of up to 690 V. It supports a size of NH000 fuse links to ensure compatibility and effective protection.

When closed, this device can manage let-through currents reaching as high as 15 kA. With a power factor of 0.95 at AC-21 B, it is engineered for efficient performance. It also possesses a surge voltage resistance of 8 kV, which bolsters its reliability in fluctuating power scenarios. The I2t rating signifies a maximum value of 223 kA²·s with the switch in the closed position, indicating its capacity to handle substantial electrical currents without failure.

The device's mechanical lifespan is estimated to withstand around 2000 operating cycles, ensuring longevity in demanding conditions. For assembly purposes, it is crucial to consider the tightening torque specifications, with a minimum requirement of 3.5 N·m and a maximum of 4 N·m at the screw-type terminals. The physical dimensions of the unit measure 141.7 mm in height and 88.8 mm in width, facilitating convenient installation in various applications. The fuse switch disconnector is completed with a pollution degree rating of 3, indicating its suitability for specific environmental conditions.