Today, we have a complex patchwork system of regional and local power plants, power lines, and transformers that have widely varying ages, conditions, and capacities.

“Nationally, 70% of transmission lines and power transformers are 25 years or older, while 60% of circuit breakers are more than 30 years old, as of the end of 2010.”

Making matters worse, the investment gap for T&D is expected to grow and at a faster pace. There is increased pressure on the grid for operational reliability.

Reliable electricity is essential for the functioning of many aspects of household and economic activity today. As the nation moves toward increasingly sophisticated use of information technology, computerized controls, and sensitive electronics, the need for electricity reliability becomes even greater. For the entire system to function, generation facilities need to meet load demand, transmission lines must be able to transport electricity from generation plants to local distribution equipment, and the decentralized distribution network must be in good repair to ensure reliable final delivery.

Deficiencies in any one of these three elements of electrical infrastructure can affect our nation’s future economic growth and standard of living.” (ASCE’s Failure to Act – The Economic Impact of Current Investment Trends in Electricity Infrastructure, copyright 2011.)

Meramec Instrument Transformer Co. services the Utility Transmission and Distribution Market with high quality, custom-designed current transformers. Our CTs are designed to fit your specifications and budget, and they are delivered when needed.

To meet the needs of the Transmission and Distribution Market, Meramec provides a full line of custom-designed:

  • Outdoor Mounted Slip-Over Bushing Current Transformers (SBCTs)
  • eSP Outdoor Mounted Slip-Over Bushing Current Transformers (eSPs)
  • Internally Mounted Dry-Type Bushing Current Transformers (DBCTs), including:
    • Gapped Core and Linear Coupler versions
  • Internally Mounted Oil-Type Bushing Current Transformers (OBCTs), including:
    • Gapped Core and Linear Coupler versions


Meramec Instrument Transformer Co. is ready to support you. Our Midwestern US facility has the capabilities to provide you with a custom-designed product that fits your requirements and budget.
power trans

The Meramec Difference:
  • We are available 24/7 to support you.
  • We answer the phone 100% of the time during business hours.
  • RFQs are quickly turned.
  • Delivery performance
    • In project mode, rest assured it is delivered on time.
    • In crisis mode, we pull out all the stops to get you up and running.
  • Custom CT designs with custom mounting.
  • Known and proven product quality – install and forget.
  • Technical support that allows your engineers to focus on other issues and not the CT’s design.
  • 99.978% Quality Performance.
  • Made in the USA.
  • We are the Instrument CT Specialists. Instrument Transformers are what we do.


Meramec’s 24/7 Rapid Response is available for rush situations. We are available to support your needs. All of our products are custom-designed and made in the U.S.A. Designs can be made to match the existing current transformer characteristics or to optimize your chosen parameters. Our products are guaranteed and backed by our 99.978% quality performance rating.

Whether you’re planning your Current Transformer requirements for new equipment, system upgrades and replacement units, or you’re trying to recover from an unplanned outage, remember there is no equivalent. SPEC the BEST– Spec Meramec!