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Overhead AutoRANGER Fault Indicators

AR360 Fault Indicators provide ultrabright flashing LED displays with 360 degrees of visibility. A distinctive "rotational" flash sequence enhances fault display location. Advanced microprocessor-based technology senses and measures load and detects faults on lightly loaded circuits with as little as 50 A of fault current. The AR360 steps up its trip threshold as the load increases to coordinate with the load. Permanent and momentary faults are identified separately through the use of red and amber LEDs and flash patterns. The AR360 identifies momentary faults with flashing amber LEDs. Permanent faults are indicated by a combination of alternating red and amber LEDs. 

AR360 Fault Indicators are quick and easy to install with one hot stick. There are no clamps to disassemble. No extra hardware is needed. With AR360 Fault Indicators, detect momentary faults before they become outages and speed restoration after permanent faults.

Starting At

$212 USD

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Overhead Fault Location—Apply AR360 or AR-OH Overhead AutoRANGERs across your entire overhead system as an economical solution to reduce fault-finding time and improve reliability metrics. The AutoRANGER logic automatically selects the best trip threshold based on sampled load current and reduces effort of coordinating FCIs with various protection schemes. The AR360’s bright LED display provides higher visibility fault indication, day or night.

Momentary Fault Detection—Improve system reliability by tracking down momentary faults before they become permanent outages. The AR360 and AR-OH are equipped with simple-to-interpret displays that provide distinct flash patterns for both permanent and self-clearing faults.

Distribution Circuit Reliability Improvement—Deploy the AR360 on distribution circuits up to 34.5 kV.


How To Install AR360 AutoRanger Fault Indicator

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How To Install AR360 AutoRanger Fault Indicator
  • 360-Degree Visibility
    Six ultrabright, wide-angle LEDs provide overlapping fields of light that collectively yield nearly the same light intensity regardless of the observer's viewing angle. The LED flashing sequence provides a distinctive rotational motion effect that enhances permanent fault display visibility.
  • Momentary and Permanent Fault Identification
    Distinct momentary (amber) and permanent (red and amber) fault indication patterns provide the flexibility of locating the cause of permanent and momentary faults.
  • Auto-Adjusting Trip Threshold Selection
    AR360 Fault Indicators dynamically optimize sensitivity and security based on automatic load measurements. They can detect faults with as little as 50 A of current when loads are light and automatically step up their trip threshold to remain coordinated with increasing load current.
Trip Threshold Range50 to 1200 A
System Voltage Range (L-L)4160 V to 34.5 kV
Maximum Fault Current25 kA for 10 Cycles
Trip Response Time24 ms, Nominal
Permanent Flash-Clearing Times 
50 and 100 A Trip Levels8 Hours
200 and 1200 A Trip Levels4 hours AR 360-4, 8 Hours AR360-8
Temporary Flash-Clearing Times0, 4, 8, 16, or 24 Hours
Flash Hours1800 Hours
Outer Diameter Clamping Range0.162" to 1.50"
Battery3.6 V High-Capacity 17 Ah Lithium Battery With a 20-Year Shelf Life
Approximate Weight840 g (1.85 lbs)