At Midwest Current Transformer, we provide custom-manufactured donut type current transformer options for various power applications, including the SC, RC and CT series current transformer. Based on your request, we are able to build and deliver customized current transformer solutions that accommodate your power requirements. As a premier toroidal current transformer manufacturer, we offer current transformers with varying capabilities and features with respect to ratio, size, accuracy, burden rating, mounting options, multiple taps, and terminals.

We have more than 50 years of experience in the current transformer industry, providing current transformer design and production for numerous clients down through the years. As a leader in toroidal current transformer design services, we have your individual ring current transformer production and operational requirements covered.

Midwest Ring Current Transformer RC, SC and CT Series

Our toroidal RC and CT series current transformers are used in multiple applications including for protection, metering, and current monitoring. Each of these current transformers is built with a strong M4 electrical grade steel core.

The RC and SC series transformers are wrapped with copper magnetic wire inside of a black polycarbonate case. The CT series current transformers are wrapped with fiberglass insulating tape and immersed in a poly resin for protection. The RC transformer series equipment is manufactured with 2 foot long lead wires. The SC and CT transformer series equipment includes 2 foot long lead wires or screw terminals. The donut current transformer we offer in the SC, RC and CT series is UL recognized and conforms to the requirements of IEEE/ANSI C57.13 and Rohs.

Contact Us

At Midwest Current Transformer, we are dedicated to providing you with the toroidal and other current transformer solutions you need for your applications. For more information about how we can serve your current transformer requirements, call us today at 800.893.4047 or email our team at This email address is being protected from spambots. You need JavaScript enabled to view it..