Secondary Current Transformer features split-core design.

Press Release Summary:

Featuring 2.22 x 1.19 in. sensing window, CT-MS Current Transformer is suited for installing over large wires or bus bars. Unit measures AC current from 0–150 to 0–800 A and produces 0–5 A output proportional to current flowing through sensing window. Transformer has plated terminals for reliability and is compatible with standard power monitors and panel meters designed for 5 A input. 

Original Press Release:

NK Technologies Introduces CT-MS 5A Secondary Current Transformer with Split-Core Design and Larger Aperture for Easy Installation

SAN JOSE, CA – NK Technologies has a new addition to its line of 5A Secondary Current Transformers. The CT-MS has a split-core design and larger than average sensing window, making it ideal for installing over large wires or bus bars. The CT-MS measures AC current and produces a 0 – 5 amp output proportional to the current flowing through the sensing window.

The CT-MS 5A Secondary CT offers a compact and cost-effective way of measuring primary current. Key features include:

• Compatibility with standard power monitors and panel meters designed for 5-amp input

• Large 2.22” x 1.19” sensing window

• Measures current from 0-150 to 0-800 amps

• Plated terminals for reliability

• UR-recognized file E475131

• Meets ANSI/IEEE C57.13 and IEEE C57.13.2


Founded in 1982, NK Technologies designed the first low-cost solid-state current sensing technology that underlies the industry today. 

Today, NK Technologies is a leading provider of current sensing, ground fault detection and power monitoring products to the industrial and factory automation markets, with a product portfolio that includes more than 1300 models to satisfy a wide range of specific application needs.  As the needs of these markets change, NK Technologies is well-positioned to respond with sophisticated new product designs and improved product functionality necessary to meet those applications.

NK Technologies

3511 Charter Park Drive

San Jose, CA 95136


fax: 408.871.7515


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