The Siemens 3NJ6312-3AA0.-.... is a SENTRON 3NJ63 switch disconnector with fuses — an in-line, pluggable NH1 fuse holder rated for 250 A continuous current. It's a 2-pole DC unit, breaking 100 kA at DC 230 V, with manual operation. This is the part you reach for when you need a service-disconnect that also provides fuse-based short-circuit protection on a DC bus or battery bank.
RoHS compliant since 27 September 2019. REACH candidate-list information is available on request.
