4-20mA Signal Isolators

Acromag offers the industry’s best selection of isolators. Dozens of models are available to meet your requirements. Select from single, dual, and quad-channel models with AC, DC, or loop-powered operation. Signal splitters deliver dual outputs from a single source. And whether you need a unit that sinks or sources current, Acromag has the right solution for you.

Optical or galvanic isolation eliminate ground loop errors, reduce noise, and block high voltage transient surges. All Acromag isolators will withstand 1500V AC for 60 seconds and provide continuous 250V AC or 354V DC common-mode protection of your precious equipment.

Acromag features solve many tough problems. Our multi-channel modules reduce costs and save space. Models with push-button calibration simplify installation and maintenance tasks. Units with trim pots ship preset for 4-20mA input/output so field calibration is not required.

Watch a signal conditioning guide video for the benefits of different models.

2-Wire Loop-Powered Isolators
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3-Wire DC-Powered Isolators
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4-Wire AC/DC-powered Isolators
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