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# Posts by tag 'Current Transformer'

Topics: All Thermostats Company News Trade Shows Hotel Smart Energy Meters Senior Care

 Smart Energy Meters Sep 29, 2026

## Sizing a PC471 Open-Type CT: Bores, Ratings and Non-Standard Orders

Six bores from Ø10 to Ø51 mm, 20–300 A single-phase and 80–750 A three-phase: how to size a PC471 open-type CT, and which sizes are built to order.

 OT OWON Technology Read article →

[Link: /blog/pc471-ct-selection/]