Switch disconnector with fuses — 250 A, AC23A 500 V
The Siemens 3NJ6313-3AA0.-.... is a SENTRON 3NJ63 switch disconnector with fuses, rated 250 A in AC23A duty at 500 V. The AC23A rating handles motor load inrush. The 120 kA breaking capacity at AC500 V provides fault-current headroom. This is a 3-pole, in-line design, pluggable NH1 fuse holder. The NH1 fuse size (up to 250 A per pole) is common in European switchgear; the pluggable format means the fuse carrier can be withdrawn without tools for quick fuse replacement or isolation. Manual operating — no motor drive — so it is a straightforward disconnect for panel builders who need a visible break. The part is classified as Product class C: manufactured/produced to order, not reusable or returnable. That means it is built to a specific order, not a stocked shelf item. Plan the BOM freeze accordingly — once ordered, it is committed.
RoHS compliant since 27 September 2019. REACH Article 33 information is available on request.