Shelly Current Transformer Pro 3EM

$9 ~~$60~~ In stock

The Shelly Current Transformer Pro 3EM is a professional-grade energy monitoring accessory designed for use with Shelly 3EM devices. It enables precise measurement of electrical current in single or three-phase systems.

Available in two variants: 120A and 400A, to suit different installation requirements.
Compatible with Shelly 3EM for accurate energy monitoring and management.
Ideal for residential, commercial, and industrial applications where real-time current data is needed.
Easy to install and integrate into existing electrical setups.

Customer Reviews (4.8 / 5 · 16 reviews)

Emma ★★★★★ Aug 13, 2026

The installation took maybe ten minutes since the clamps are clearly marked, and the current readings match my utility meter within a few watts. It’s a solid upgrade if you’re already tracking three-phase loads.

David ★★★★★ Aug 12, 2026

The clamp fit is snug and the readings match my utility meter almost perfectly. Setup with the 3EM took under ten minutes and now I can finally see exactly which circuit is eating the most power.

Joshua ★★★★★ Aug 11, 2026

Went from vague "estimated usage" to actually seeing per-phase current draw in real time, which was the whole reason I bought these. The clamp design feels solid and the measurements match my utility meter within a couple percent.