| AT/ATR 3 & 4 Series, High Current AC Transducers |
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| AT/ATR 3 & 4 Series Current Transducers combine a current transformer and a signal conditioner into a single package for applications from 200A to 2000A. The AT version is Average Responding for use on linear (sinusoidal) loads. The ATR version is True RMS for use on distorted waveforms found in VFD or SCR ouputs. Available in a solid-core case. |
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Download Complete Specifications in .pdf Format |
Large Pumps
Detect dry run electronically. |
Power Generation
Measure the output of generators. |
Electric Heating Elements
- Monitors heater loads.
- Faster response than temperature
sensors.
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- Large Aperture - Accommodates large
conductors or wire bundles.
- Select the Right Output
- True RMS technology is accurate on
distorted wave form like those associated with VFD or SCR outputs.
- Average Responding for use with linear,
sinusoidal waveforms.
- Jumper Selectable Ranges
- Reduces inventory.
- Eliminates zero and span pots.
- Isolation
- Output is magnetically isolated from
the input for safety.
- Eliminates insertion loss (voltage
drop).
- UL, CUL approved.
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| Output Signal |
4–20mA, Loop-powered |
| Output Limit |
23mA |
| Accuracy |
1.0% FS accuracy, True RMS |
| Measurement |
True RMS or Average Responding (See Ordering Information) |
| Response Time |
600 ms (to 90% step change) |
| Frequency Range |
- ATR: 10–400Hz
- AT: 50–60Hz, Sinusoidal
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| Power Supply |
24VDC Nominal, 40VDC Maximum |
| Isolation Voltage |
600VAC |
| Input Ranges |
- AT/ATR3: 375, 500, 750A
- AT/ATR4: 1000, 1333, 2000A
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| Sensing Aperture |
3.0” (76.2mm) dia. |
| Case |
UL94 V0 Flammability Rated |
| Environmental |
-4 to 122oF (-20 to 50oC) 0–95% RH, non-condensing |
| Listings |
CE, UL 508 Industrial Control Equipment |
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| Ordering Information |
Download Complete Specifications in .pdf Format |
| Solid-Core Models |
| Model |
Description |
Output |
 AT3-420-24L-FL |
0-375, 0-500, 0-750A Ranges, Base Term. |
4-20mA
Average Responding |
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AT4-420-24L-FL |
0-1000, 1333, 2000A Ranges, Base Term. |
4-20mA
Average Responding |
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ATR3-420-24L-FL |
0–375, 0–500, 0–750A Ranges, Base Term. |
4–20mA True RMS |
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ATR4-420-24L-FL |
0–1000, 1333, 2000A Ranges, Base Term. |
4–20mA True RMS |
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