Universal AC to DC Converter

Model : PR 4179

Brand: PR Electronics

  • Conversion of the AC RMS voltage and current into standard DC signals
  • AC Current input range: 0…5 AAC / 40…400 Hz
  • AC Voltage input range: 0…300 VAC / 40…400 Hz
  • DC Current and Voltage output
  • Supports both passive and active inputs and outputs
  • Features V-curve function (100-0-100%) for signal generating purposes
  • Programming and process monitoring via PR 4500 display series
  • Fast response time < 0.75s
  • Excellent accuracy < 0.3%
  • 3kVAC galvanic isolation
  • FM-certified for installation in Div. 2
  • Universally powered by 21.6…253 VAC / 19.2…300 VDC

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Signal Converter, Signal Isolator, Transmitter


PR Electronics

Number of Inputs


Input Type

AC Current, AC Voltage

Number of Outputs


Output Type

DC Current, DC Voltage


PR 4500 Modules



Transmission Rate

2400 to 115200 bit/s


4500 series devices


< ±0.3% of span


SIL2, Hardware Assessment, UL

Power Supply

25…250VDC / 20…300VAC


2.3 kVAC

Operating Temperature

-20 to +60°C

Temperature Coefficient

< ±0.01% of span /°C

Protection Degree

IP 20


109×23.5×104 mm



Other product features

160 g


175 × 150 × 35 mm


  • The 0…5 AAC RMS range makes it possible to accurately measure a typical current transformer.
  • The 0…300 VAC RMS range allows accurate supply voltage monitoring.
  • The 4179 measures standard input ranges and can be freely configured to the customer-defined input range.
  • Converts narrow AC current/voltage inputs to wide bipolar or unipolar outputs, e.g., 0…1 VAMS input = ±10 volt or 4…20 mA output with a minimum span of 0.5 AAC RMS or 0.5 VAC RMS.
  • Configurable input limits control the output value for increased safety.
  • The 4179 has been designed according to strict safety requirements and is therefore suitable for application in SIL 2 installations.
  • Suitable for use in systems up to Performance Level “d” according to ISO-13849.

Technical characteristic

  • The latest analog and digital techniques are used to obtain maximum accuracy and immunity to interference.
  • Possibility of output safety feedback by selecting S4…20 mA output.
  • The current output can drive up to 800 Ohms, with an adjustable response time of 0.0…60.0 seconds.
  • Exceptional mA output load stability of <0.001% of span / 100 Ohm.
  • Meets the NAMUR NE21 recommendations, ensuring high accuracy in harsh EMC environments.
  • Meets the NAMUR NE43 recommendations, allowing the control system to easily detect an input error.
  • Tested to a high 2.3 kVAC, 3-port galvanic isolation level.
  • Excellent signal-to-noise ratio of > 60 dB.

Mounting / installation / programming

  • Very low power consumption means units can be mounted side by side without an air gap – even at 60°C ambient temperature.
  • Configuration, monitoring, 2-point process calibration, and more are accomplished using PR’s 4500 series of detachable displays.

Source: PR4179 Official Page

Product Documents:


PR Electronics Solutions:

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