ASFT series Current Transformers (CT)

CSA Approved • Enhanced Accuracy for Revenue-Grade Metering

The ASFT Series solid core current transformers are designed for precise current measurement in industrial control, and load monitoring applications. These transformers are CSA approved and rated for ANSI METERING CLASS up to 0.3, making them a dependable choice for panel builders, contractors, and system integrators.

The ANSI Metering Class transformers are intended for power monitoring applications where high accuracy and minimal phase angle error are required. They are specially designed to be compliant with relevant ANSI standards and perform reliably under typical utility and commercial conditions.

🔧 Key Features

• ✅ CSA Approved – Compliant with Canadian safety regulations

• ✅ ANSI METERING CLASS up to 0.3

• ✅ Current Ratios – Available from 50:5 A to 1200:5 A

• ✅ Insulation Rating – 600V, 10 kV BIL (full wave)

• ✅ Compact Solid Core Design – 1.13" (28.7 mm) window diameter

• ✅ Brass Stud Terminals – No. 8-32 screws on foot-mount base

• ✅ 50–400 Hz frequency range

📐 Specifications

📄 Datasheet available upon request

🧰 Typical Applications

• Industrial automation

• Power monitoring and load profiling

• Building automation systems

• Switchgear and MCC panels

• Utility sub-metering

🔷 ASFT Series (Solid Core, Metering Accuracy)

Available in 6 window sizes (2ASFT, 5ASFT, 6ASFT, 7ASFT, 15ASFT, and 56ASFT) and 14 current ratios (from 50:5 to 1000:5), the ASFT Series solid-core current transformers are CSA certified and Class 1 accurate. Designed for submetering, energy audits, and revenue-grade industrial monitoring where enhanced measurement precision is required.

📦 Stock & Delivery

Many models are in stock and ship next business day from our Canadian warehouse.
📬 Need OEM quantity pricing or scheduled deliveries? Contact us — we’ll be happy to help.

Explore more options:
See all Current Transformers available from Duncan Instruments—various ratios, split-core and solid-core, in stock and ready to ship.