New Family of Current Sensors/Transformers Measure a Wide Range of Currents

API Technologies Corp. has announced the availability of its 5300 series of current sensors and transformers that measure a wide range of AC currents by transforming them accurately from high to low measurable values.

API’s 5300 series current sensors feature a wide primary current range of 3.5 amps to 800 amps, and are available in several types of current transformers, including low phase/high accuracy and high frequency. Current transformers have a wide operating frequency range of 20 kHz to 100 kHz and can be totally encapsulated, with or without wound primary turns and loading resistor. All current sensors and transformers are built to meet the relevant UL, ANSI, VDE, CE and MIL standards. In addition, API also offers EMRL current transformers, which were designed to comply with standards for electrical and electronic measuring test equipment.

“API’s current sensors and transformers are commonly used in applications such as advanced fault tolerant computers and workstations, metering, protective relays, control panels reading current flowing to electric transformer, ampmeters, wattmeters and cross current compensation, as well as telecom and communications,” said Renee Fletcher, product manager, Electromagnetic Integrated Solutions, API Technologies.

Current sensors detect electrical current in a wire and generate a signal proportional to it, which is then utilized to display the measured current, or stored for further analysis in a data acquisition system. Similarly, current transformers are used to measure alternating electric currents. When current in a circuit is too high, a current transformer produces a reduced current that is accurately proportional, so it can be conveniently connected to measuring and recording instruments.

“API Technologies also specializes in creating solutions that satisfy magnetic requirements for a variety of applications,” added Fletcher. “The API Magnetics group combines its Filtran and RTI Electronics brands with state-of-the-art technology and advanced engineering to produce a broad range of custom, application-specific magnetic devices.”

As a key supplier to many of the world’s leading OEMs in the military, aerospace, medical, telecom, transport, commercial/consumer and industrial lighting and industrial/test markets, API Technologies’ Magnetics products address many of the industry’s most stringent requirements, including many MIL, ANSI and ISO certifications, including MIL-PRF-27, MIL-STD-981, UL 60950-1, and UL 61010-1.

To learn more about the API Technologies’ Magnetics product line, please visit, call +1 (888) 553-7531 or email