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Klein Tools RT310 AFCI/GFCI Outlet Tester

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Klein Tools RT310 AFCI/GFCI Outlet Tester is an electrical tester that tests the wiring condition at an electrical outlet or receptacle. The Klein arc fault tester inspects and checks AFCI devices by simulating arc fault conditions and tests GFCI devices by simulating ground fault conditions. The Klein RT310 is designed for use with North American 120V electrical outlets. It can detect and identify common wiring faults. Includes 3 x 1.5V AAA alkaline batteries.


  • (1) Klein Tools RT310 AFCI and GFCI Outlet Tester


  • Tester detects the most common wiring faults in standard, AFCI, and GFCI electrical outlets
  • AFCI tester by simulating arc fault conditions
  • GFCI tester by simulating ground fault conditions
  • Capable of detecting a dual-open wiring fault with simultaneous open neutral and open ground wires (patent pending technology)
  • Tester delivers clear visual indication of the wiring condition at the electrical outlet
  • Designed to test North American-style grounded electrical outlets in 120V AC circuits (incorporates a three-pin plug)
  • Electrical plug is on a 10-Inch (254 mm) flexible electrical cord to access electrical outlets in difficult to reach locations
  • Low battery indicator and easily accessible battery compartment; Uses 3 x 1.5V AAA alkaline batteries (included)
  • Powers off automatically after approximately 2 minutes of non-use to conserve battery life
  • Built to withstand a 6.6-Foot (2 m) drop
  • CATIII 135V safety rating
  • The RT310 features a patent pending AFCI test method that is unique to Klein Tools


Type : AFCI/GFCI Electrical Battery Operated Outlet Tester
Application : RT310 tests for wiring faults in electrical outlets, and Tests AFCI and GFCI Devices
Special Features : Tests AFCI and GFCI, Simulates Ground Fault and Arc Flash Conditions, Detects Dual-Open Wiring Fault
Material : PC/ABS Housing with Electronic Components
Drop Protection : 6.6' (2 m)
AFCI : Yes
GFCI : Yes
Voltage : 120V AC in 3-Wire Grounded Electrical Outlet
Batteries : 3 x AAA
Included : 3 x 1.5V AAA Alkaline Batteries
Standard : CATIII 135V
Overall Length : 7.4'' (18.8 cm)
Overall Height : 1.3'' (3.3 cm)
Overall Width : 2.3'' (5.8 cm)
Weight : 8.5 oz (241 g)
UPC : 092644691829


Q & A

How do i use Klein RT310 tester to test for a 30mA ground fault?

Power ON the Klein RT310 tester and insert the plug into the outlet on the circuit under test. Press the 30mA Ground Fault button to initiate. If the Not Energized indicator is illuminated and the Hazardous Voltage Warning indicator is not illuminated, reset the GFCI, AFCI, or 30mA Ground Fault device by pressing its reset button. After reset, the Hazardous Voltage Warning should illuminate, the wiring condition should indicate Correctly Wired, and the circuit status should indicate Energized. The device appears to be functioning correctly. If the circuit remains Energized, or any other condition is indicated other than Not Energized, the device being tested may be miswired, may not be installed correctly, or may not be functioning appropriately. For more detailed instructions see the Klein RT310 Manual.

What is the warranty process like?

Klein Tools offers two distinct warranties depending on product type. In this case, it would be:

Limited Warranty

Klein Tools, Inc. warrants that the products set forth below will be free from defects in material and workmanship, under normal use for the timeframes listed below (unless otherwise noted on the product packaging). At its option, Klein Tools will repair or replace, or refund the purchase price of, any product which fails to conform with this warranty. This warranty does not apply to damage from alterations, abuse, misuse, lack of maintenance, or normal wear and tear of the product. Proof of purchase from an Authorized Klein Tools Distributor is required for all warranty claims. This warranty does not apply to batteries.

Electrical Test and Measurement Tools are warrantied for two years from the date of purchase. This warranty explicitly does not cover High Voltage Test and Measurement Tools. See Klein Commercial and Industrial products warranty.

Warranty Returns

All warranty returns require proof of purchase from an Authorized Klein Tools Distributor and must include a Warranty Return Authorization (WRA) number.

Customer Reviews

Based on 1 review
High quality tester

Works like a charm.