Klein Tools RT390 Circuit Analyzer with Large LCD, Identifies Wiring Faults, GFCI
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Highlights
- CLEAR COLOR LCD DISPLAY: Circuit Analyzer with large color LCD provides easy-to-understand results for wiring faults, AFCI, GFCI, voltage drops, and device trip time
- COMPREHENSIVE WIRING FAULT DETECTION: Detect and identify common wiring faults in standard, AFCI, and GFCI electrical outlets, ensuring thorough evaluation
- DUAL WIRING FAULT DETECTION: Capable of detecting dual wiring faults, including open neutral and open ground, enhancing safety measures
- AFCI AND GFCI DEVICE INSPECTION: Inspect AFCI and GFCI devices, measuring trip time and trip current for accurate functionality assessment
- LOAD TESTING CAPABILITIES: Conduct 12A, 15A, and 20A load testing to measure percentage voltage drops, providing valuable insights into electrical performance
- AUTO POWER OFF: Automatically powers off after 5 minutes of inactivity, conserving battery life and ensuring long-term usage
- DETACHABLE CORD: Detachable cord allows for easy storage, providing convenience and organized handling of the Circuit Analyzer
- For use with North American 120V AC 3-wire electrical outlets
- Safety Rating: CAT III 135V
Why You'll Love It
- Large color LCD screen clearly displays faults, voltage drops, and trip times
- Pinpoints single and dual wiring faults including open neutral and open ground
- Measures both trip time and trip current on AFCI and GFCI devices
- Runs 12A, 15A, and 20A load tests to check percentage voltage drops
- Detachable power cord allows compact, organized storage between jobs
- Conserves battery power with an automatic shutoff after 5 minutes of inactivity
Pros
- +Large easy-to-read color LCD display
- +Measures AFCI and GFCI trip time and current
- +Detects complex dual wiring faults
- +Tests voltage drops at 12A, 15A, and 20A
- +Detachable cord for neat storage
Cons
- -Limited to North American 120V 3-wire outlets
- -Battery type required is not specified
- -Rated specifically for CAT III 135V environments
Detailed Review
The RT390 Circuit Analyzer is a dedicated diagnostic tool designed to evaluate North American 120V AC 3-wire electrical outlets. It provides in-depth safety checks for standard, AFCI, and GFCI receptacles, making it a reliable instrument for troubleshooting branch circuit issues and confirming proper installation.
Testing electrical circuits goes beyond basic presence-of-voltage indicators. This analyzer features a large color LCD that presents clear readouts for wiring errors, including dual faults such as open neutral and open ground conditions. In addition to fault finding, the tester inspects AFCI and GFCI devices by measuring their exact trip time and trip current, confirming that protective equipment responds accurately under test conditions.
Circuit performance can also be evaluated under real-world demands. The tool conducts load testing at 12A, 15A, and 20A to measure percentage voltage drops across the circuit. For practical everyday handling, it includes a detachable cord that simplifies storage and an auto power-off function that shuts the device down after 5 minutes of inactivity to preserve battery life.
A notable limitation is its specific operational scope. The tester is strictly intended for North American 120V AC 3-wire outlets and carries a CAT III 135V safety rating, so it is not built for higher-voltage commercial circuits. The listing also does not mention what specific battery type powers the unit.
Verdict: The RT390 is an excellent choice for anyone needing thorough diagnostics on standard 120V circuits. Its combination of dual-fault detection, AFCI and GFCI trip testing, and multi-amperage load testing delivers clear, detailed circuit assessments in a single tool.
Who Should Buy It
A great fit if you:
- Need to identify complex wiring issues like open neutral or open ground on 120V outlets.
- Want to measure precise trip time and trip current on AFCI and GFCI receptacles.
- Require percentage voltage drop measurements under 12A, 15A, or 20A loads.
- Prefer a clear color LCD display for viewing test results.
Consider something else if you:
- Work with outlets other than standard North American 120V AC 3-wire configurations.
- Need a tester rated for voltages higher than CAT III 135V.
FAQ
What types of outlets can this analyzer test?
It is designed for use with North American 120V AC 3-wire electrical outlets, including standard, AFCI, and GFCI configurations.
What load testing options are available?
The unit can conduct load tests at 12A, 15A, and 20A to measure percentage voltage drops on the circuit.
Does the tester shut off on its own?
Yes, it features an auto power-off function that turns the device off after 5 minutes of inactivity to save battery power.
What safety rating does this device have?
The circuit analyzer is rated for CAT III 135V safety environments.
Product Details
| ASIN | B0BT87LJRL |
