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.

Superior Goals and Higher Expectations

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 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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Metering Vs. Protective Current Transformers

The wheels of industry are turned by some very large drive systems. However, some of the biggest machinery is controlled by much smaller control circuits. Current transformers help to keep these circuits running smoothly. Some CTs can effectively monitor current while others provide valuable protection. Here is a closer look at the differences and similarities of protective and metering current transformers.

How CTs Work

To better understand protective and metering transformers, it is good to know how they operate. A current transformer does not raise or lower voltages like potential transformers (which you may see on utility poles near houses). Current transformers see a lot of use in control circuits, and they can raise or lower current levels and monitor current flow like an ammeter.

Protective Transformers

Protection current transformers help the current travel through the load (wires, connections, or starters, relays, or contactors). Current cannot flow until the protective transformer terminals reach a certain voltage.

Metering Current Transformers

Metering CTs work much like portable clamp-on ammeters, except they usually have more range. They can monitor current flow and give you readings of the current usage.

Benefits of Protective Transformers

Many control circuits have small and sensitive components. In fact, they may be very sensitive to overcurrent conditions. A protective transformer works like a circuit breaker to keep current levels safe and protect circuit components from dangerously high current levels.

Metering Transformer Benefits

Metering CTs cannot provide overload protection because unsafe current levels would be past the saturation point. They keep track of and measure current in the circuits to help you avoid problems associated with high or low current levels. When you need the best source for your protective or metering current transformers, come to Midwest Current Transformer. You can call us toll-free today at 1-800-893-4047 for more info.

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