top of page

The Klein Circuit Analyzer RT390: Your Comprehensive Electrical Outlet Testing Solution



When it comes to electrical outlet testing and identifying common wiring faults, the Klein Tools RT390 Circuit Analyzer is the go-to solution. Explore how this versatile tool can help you ensure the safety and efficiency of your electrical systems.


Comprehensive Testing Capabilities

The RT390 is more than just a circuit analyzer; it's a multifunctional device designed to tackle a range of tasks related to electrical outlets and circuits. Here's what it can do:

1. Inspect AFCI and GFCI Devices

AFCI (Arc Fault Circuit Interrupter) and GFCI (Ground Fault Circuit Interrupter) devices are crucial for electrical safety. The RT390 helps you inspect these devices, including measuring trip time and trip current, ensuring they function as intended.

2. Identify Common Wiring Faults

Wiring faults can lead to safety hazards and inefficient electrical systems. The RT390 is equipped to detect and identify common wiring faults, including:

  • Correctly Wired

  • Open Ground

  • Open Neutral

  • Open Hot

  • Dual Open

  • Reversed Hot/Ground

  • Reversed Hot/Neutral

3. Display AC Line Voltage

Knowing the AC line voltage is essential for assessing the health of your electrical system. The RT390 provides a clear display of AC line voltage, helping you monitor the power supply.


4. Perform Voltage Drop Tests

Voltage drop tests are critical for evaluating the performance of electrical circuits. The RT390 allows you to perform voltage drop tests at different current loads, including 12A, 15A, and 20A. If the voltage drop exceeds 5%, the background color changes to red, indicating a potential issue.


Features and Benefits

The RT390 Circuit Analyzer comes packed with features that make it an indispensable tool for electricians and DIY enthusiasts alike:

  • Large Color LCD Display: The easy-to-read display provides clear and concise results for wiring faults, AFCI/GFCI inspection, voltage drops, and time-to-trip devices.

  • Detect Wiring Faults: Quickly detect and identify common wiring faults in standard, AFCI, and GFCI electrical outlets, ensuring safety and compliance.

  • Dual Wiring Fault Detection: The RT390 can even spot dual wiring faults like open neutral/open ground, providing comprehensive testing capabilities.

  • Load Testing: Perform load testing at 12A, 15A, and 20A to measure percentage voltage drops accurately, helping you assess the quality of your electrical connections.

  • Auto Power-Off: To conserve battery life, the RT390 powers off automatically after 5 minutes of inactivity, ensuring it's always ready when you need it.

  • Detachable Cord: The tool features a detachable cord for easy storage, making it a convenient addition to your toolkit.

  • Safety Rating: With a CAT III 135V safety rating, the RT390 is designed to withstand the rigors of electrical testing.

The RT390 Circuit Analyzer is designed for use with North American 120V AC 3-wire electrical outlets, making it a versatile and essential tool for anyone working with electrical systems.


The Klein Circuit Analyzer RT390, available through Power-Flo Technologies, is a comprehensive and reliable solution for electrical outlet testing and fault identification. With its range of features and user-friendly design, it's an excellent addition to any professional electrician's toolkit or DIY enthusiast's collection. Ensure the safety and efficiency of your electrical systems with the RT390 Circuit Analyzer.

Σχόλια


bottom of page