Siemens 3NP353 3ZX1012-0NP30—1AA2 Disconnect Fuse

Siemens 3NP353 3ZX1012-0NP30-1AA2 is a three-pole fuse-switch disconnector that ships with three 50 A fuse units, purpose-built for safe isolation of three-phase circuits in low-voltage distribution panels. This fused switch disconnector provides the means to close on and interrupt the rated current across all three phases, and is associated with Siemens 3NP353/3NP401 fuse-switch assemblies used for modular, panel-mounted protection and isolation. In terms of enclosure protection, the device offers IP20 in standard configurations and IP30 when mounted with the moulded-plastic masking frame and fuse carrier, enabling safer operation in demanding panel environments. Each of the three poles carries a dedicated fuse carrier, delivering independent phase protection and straightforward replacement, while maintaining a compact footprint within Siemens’ 3NP353/3NP401 family. The order number 3ZX1012-0NP30-1AA2 identifies this specific assembly, and operating instructions emphasize disconnecting power before servicing to ensure safe work practices in accordance with DIN/IEC standards. This part is suited for integration into Siemens switchgear where a compact, three-pole fused disconnect is required to provide reliable, per-phase isolation and protection in three-phase distribution systems.