Midwest Current Transformer has been an industry leader in design and production of current transformer products for over 50 years. Our focus is to build quality products designed to meet your needs. You may choose from any of our standard products or we can design and build a custom solution specifically for your application..

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It is the goal of Midwest Current Transformer to maintain its position as a worldwide industry leader . . .

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CT Series Current Transformer

CT Series Current Transformer

The CT Series offers a wide range of standard ratios to 1 amp and 5 amp secondary outputs.

Standard units are manufactured with 24 inch leads, 600 volt fiberglass insulation wrap and a protective polyurethane coating.

Screw terminals, high voltage insulation, mounting brackets and ratios to 0.1 amp are available. Please specify when placing your order.

RC Series Current Transformer

RC Series Current Transformer

The RC Series offers a wide range of standard ratios to 1 amp and 5 amp secondary outputs.

Standard units are manufactured with 24 inch leads and a round polycarbonate case.

Mounting brackets and ratios to 0.1 amp are available. Please specify when placing your order.

SC Series Current Transformer

SC Series Current Transformer

The SC Series offers a wide range of standard ratios to 1 amp and 5 amp secondary outputs.

Standard units are manufactured with brass screw terminals and a square polycarbonate case.

Lead wires instead of screw terminals and ratios to 0.1 amp are available. Please specify when placing your order.

Custom Current Transformer

Custom Current Transformer

Midwest Current Transformer offers you a wide range of current transformers. Should a standard unit not meet your specific application, our experienced staff will design a custom current transformer for you.

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Premier Current Transformer Manufacturing Company

As a premier leader among current transformer suppliers, Midwest Current Transformer has served customers requiring high quality current transformer products for more than five decades. Our targeted focus is the manufacture of standard and custom design current transformer solutions to meet the requirements of a wide range of applications.

Customized Current Transformer Design

We offer pre-made current transformers to serve the needs of various power applications. Our team is able to customize your order in order to help you achieve the optimum current transformer solution in terms of size, ratio, accuracy, multiple taps, contacts, mounting options, and burden rating. Our range of transformers includes: instrument current transformer, multi ratio current transformer, toroidal current transformer, donut type current transformer, current metering transformer and more.

Our Electrical Current Transformer Construction

At Midwest Current Transformer, we manufacture the majority of our current transformers from cold-rolled grain oriented electrical steel (CRGO). The CRGO steel comprising our current transformers is rolled into your required inner and outer diameter dimensions which permits precise dimensioning and tight construction between layers. As an iron-silicon alloy, CRGO electrical steel provides high permeability and low core loss that enables greater efficiency and cost-effectiveness of the current transformer.

Total Quality Management

Our approach consists of Total Quality Management protocol in which our employees, customers, and suppliers are valued as an integral part of our successful process. Our standard for success is error-free performance with the commitment to error prevention and getting-the-job-done-right-the-first-time mindset.

Through hands-on product inspection as part of an entire quality management system, we strive for perfection at every stage of the manufacturing process before your products leave our hands. We push toward continual quality improvement, adherence to safety standards, and personnel development through high-value training across all levels of our operations.

Contact Us

For more information about the superior current transformer products we offer at Midwest Current Transformer, call us today at 800.893.4047 or email sales@aenpi.com.

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Common Applications for Current Transformers

Current transformers play an important role in industry today. In fact, they are just as important as potential transformers because they can monitor and detect current flow in a wide range of circuits. There are many uses for CTs, and they can be found in many applications.

Where Meters Cannot Work

It is possible to measure electrical current with a clamp-on ammeter. They are portable, simple to use, and cost-effective. However, clamp-on meters have limits. For example, you would not want to manually meter or measure current in many industrial settings today. Also, a portable ammeter has limits on how much current it can handle. Current transformers solve this problem because they are designed specifically for industrial applications.

Current Limiting

It is important to protect sensitive components in many kinds of industrial applications today. For example, motorized conveyor systems and processing equipment rely on motor control circuits, and current transformers are there to provide valuable overcurrent protection and keep electrical current to safe levels. In fact, numerous industries rely on current transformers.


Making sure current levels stay within spec helps you run a more efficient operation. With a current transformer in place, your readings are not dependent upon capacitance or inductance of the transformer. You can get consistently accurate readings, and it is possible to connect more than one measuring instruments to them.

Current Transformer Applications for Your Business

If you want maximum protection for your control circuits, it is important to have the most effective overload protection. Some applications have special requirements, and custom current transformers from Midwest Current Transformer can give you peace of mind knowing you have the most up to date and efficient protection.

We provide many ways for you to customize your CT applications. Call us toll-free today at 1-800-893-4047 for more information.

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