The 3NJ6920-3DB00 is a CT busbar assembly for mounting a single bushing current transformer onto a SENTRON 3NJ6 (NH00) in-line switch disconnector with fuses. It provides the primary conductor path through the CT window, enabling current measurement without external wiring.

Modular CT Mounting

Part of the 3NJ6 plug-in accessory ecosystem, this busbar assembly snaps into the disconnector and accepts one bushing-type current transformer. Ideal for single-phase monitoring applications or feeders where only one phase requires metering. The standard bushing accommodates common CT form factors.

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.