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Digital AC True-RMS Ammeters
Compact and easy-to-use solution for measurement of non-sinusoidal AC currents

  • Worlds first true-RMS responding AC Ammeters with built-in CTs.  50 Amp model uses external split-core current transformer.
  • Five models provide current measurement from 0 to 50A.
  • Custom models available for use with external CTs. Call us: (800)230-6008.
  • Large easy-to-read red LED display.
  • Choice of either 120V or 240V (nominal) operation.

The new Datel ACA-20RM series are the worlds first true-RMS responding digital AC ammeters with built-in current transformers (CTs). They are able to provide direct measurement of the true-RMS values of complex, non-sinusoidal AC currents of between 2A and 50A. Ideal for use in the latest computer and telecom equipment, the compact, self-powered, single-board modules feature a large, easy-to-read LED display and provide an ideal replacement for older, less reliable, analog panel meters.

The modules are powered from either 120V (85-140VAC) or 240V (170-264VAC). Power consumption is less than 50mA.

Why should I specify the ACA-20RM?

  • The on-board, miniature, high-turns ratio CTs provide an accurate and straightforward way to measure AC load currents.
  • All Datel ACA-20RM series True-RMS-AC Ammeters utilize low power consumption, bright red LED displays with easy-to-read full-size 9.4mm (0.37in.) high characters.
  • The completely self-contained design of the modules enhances reliability and means that no external components are required.
  • Precision auto-zeroing circuitry, super-stable components and an RMS-to-DC converter circuit combine to give the Datel ACA-20RM series excellent performance.
  • A built-in bezel / filter assembly with metal fasteners allows straightforward assembly of the new Ammeters into your application.

Typical Panel Installation

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Product Guide     (To place an order, enter the quantity of desired items and then click on the "Add" bar at the bottom of the chart.)
Model Number Type Current Transformer Power Supply Measurement Range Price Purchase
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Built-In 85-140VAC/47-63Hz 0-199.9 mA $ Qty:
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Built-In 170-264VAC/47-63Hz 0-199.9mA $ Qty:
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Built-In 85-140VAC/47-63Hz 0-1.999 AMPS $ Qty:
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Built-In 170-264VAC/47-63Hz 0-1.999 AMPS $ Qty:
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Built-In 85-140VAC/47-63Hz 0-19.99 AMPS $ Qty:
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Built-In 170-264VAC/47-63Hz 0-19.99 AMPS $ Qty:
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Flying lead, Split-Core 85-140VAC/47-63Hz 0-50.0 AMPS $ Qty:
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Flying lead, Split-Core 170-264VAC/47-63Hz 0-50.0 AMPS $ Qty:
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Flying lead, Solid-Core 85-140VAC/47-63Hz 0-30.0 AMPS $ Qty:
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Flying lead, Solid-Core 170-264VAC/47-63Hz 0-30.0 AMPS $ Qty:

2046 West Peninsula Circle - Chandler, AZ 85248  USA
Telephone: (480) 659-8351, Toll Free: (800) 230-6008, Fax: (480) 659-8361


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