The Siemens 3NJ6930-3BD23 is an ultra-low-profile bushing current transformer designed for the SENTRON 3NJ6 series of in-line switch disconnectors with NH1 fuse assemblies. At just 6 mm in height, it delivers accurate current measurement in distribution panels where installation depth is extremely limited. The 100/5 A ratio, Class 0.5 accuracy, and legal-for-trade calibration make it suitable for billing-grade energy metering.

Ultra-Slim 6 mm Design for Tight Spaces

Unlike standard current transformers that occupy 30 mm or more of panel depth, the 3NJ6930-3BD23 measures only 6 mm in height. This makes it the only choice for NH1 in-line switch disconnector installations where adjacent equipment or enclosure walls leave no room for a standard transformer — without sacrificing calibrated Class 0.5 accuracy.

5 A Secondary with 1.5 VA Burden

The 5 A secondary output connects directly to standard panel meters and energy measurement devices. With a 1.5 VA rated burden, it supports a single instrument with moderate lead length — well-matched to the compact installation environments where this low-profile design is typically deployed.

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