Saelig Introduces T3RC Rogowski Coil Current Probes For A.C. or Fast Pulse Current Measurements

T3RC current probe range offers a large range of current measurements with wide frequency span choice and easy use with small or large devices

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Fairport, NY, USA: Saelig Company, Inc. has introduced Teledyne Test Tools T3RC Rogowski Current Probes that offer broad current measurement ranges and a wide frequency span which are also easy to use in difficult-to-reach parts of circuits. Five models are available, providing measurement capabilities up to 6,000 amps and with the capability to connect around the leg of a small T0-220 device. The probes connect to any standard oscilloscope via a conventional BNC connection.

The flexibility of the probe sense coil means that measurements can usually be made without modification to the circuit under test, giving more accurate electrically-isolated results with a very low insertion load (a few pH). Being designed for either battery power or wall plug operation, these Rogowski Current Probes are equally suited to field work or benchtop measurements.

The T3RC0300-UM version features the smallest cross-section sense coil at only 1.7mm to allow probing around the leg of small power components such as inductors, capacitors or even switching devices as small as a TO-220 MOSFET. The T3RC0600-HF and T3RC3000-HF models cover applications up to 600A and 3000A respectively. With extended high frequency coverage, 5kV peak insulation and wide operating temperature range from -40degC to +125degC, these probes are ideal for both industrial temperature as well as general environments. The T3RC3000-LF and T3RC6000-LF versions offer an extended low frequency performance down to less than 1Hz. The low frequency performance means that the maximum droop on low frequency pulses is typically 0.1%/ms or less, while offering the highest level of peak insulation of 10kV and an operating temperature range of -20degC to +100degC.

T3RC Features

Applications include current measurements in R&D, motor drives, power converters, system maintenance, etc. The Teledyne LeCroy T3RC probes are available now from their authorized North American distributor Saelig Company, Inc. Fairport, NY. For detailed specifications, free technical assistance, or additional information, please contact Saelig at 888-7SAELIG, via email:, or by visiting About Saelig Company Inc.

Founded in 1988 in Rochester, New York, Saelig is a North American distributor with a growing reputation for finding and sourcing remarkable, unique test and measurement and control products and components for use in a wide variety of industries. Products lines are continuously added from sources across the globe, and are offered at competitive prices, accompanied by full in-house technical support, exceptional customer service, and fast delivery.