The 3NJ6920-3DC00 is a CT busbar assembly for mounting three bushing current transformers onto a SENTRON 3NJ6 (NH00) in-line switch disconnector with fuses. It provides three primary conductor paths through the CT windows — one per phase — enabling full three-phase current measurement.

Modular CT Mounting

With three CT positions on standard bushings, this busbar assembly enables complete three-phase monitoring from a single plug-in unit. Each position accepts a standard bushing-type current transformer. The assembly snaps into the 3NJ6 disconnector and can be retrofitted without disconnecting the main circuit.

Key Parameters

Retrofittable Design

All 3NJ6920 series busbar assemblies can be retrofitted at any time — no need to disconnect the main circuit or remove the switch disconnector from the panel. The plug-in interface ensures quick installation without tools, letting panel builders add metering capability as requirements evolve.