KLEIN TOOLS ET250 Digital AC-DC Voltage and Continuity Tester Instruction Manual

: October 30, 2023
: KLEIN TOOLS

KLEIN TOOLS ET250 Digital AC-DC Voltage and Continuity Tester

KLEIN-TOOLS-ET250-Digital-AC-DC-Voltage-and-Continuity-Tester-
product

Product Information

The Klein Tools ET250 is a digital voltage and continuity tester that operates on solid-state technology. It can measure AC/DC voltages up to 600V and test for continuity. The tester is equipped with a backlight and worklight for working in dim lighting conditions. It can also test GFCI protected circuits to ensure proper functioning of the GFCI device. The ET250 has a CAT IV 600V safety rating and is double insulated with Class II insulation. It has an IP53 rating, which means it is protected against dust and water spray at an angle of up to 60 degrees from vertical.

Product Usage Instructions

Before using the Klein Tools ET250, read the instruction manual carefully to ensure the safe and proper operation of the tester. Failure to follow the instructions may result in serious injury or death.

Connecting Test Leads

Ensure that the tester is turned off before connecting test leads.

Insert the black lead into the COM jack and the red lead into the V/Ω jack.
Connect the black lead to the negative side of the circuit being tested and the red lead to the positive side of the circuit being tested.
When testing for continuity, connect both leads to the circuit being tested.

Note: Do not attempt to measure continuity in an active circuit.

Testing for Voltage and Continuity

Turn on the tester by pressing the power button.
Select the appropriate voltage range – VAC or VDC.
Touch the test leads to the circuit being tested.
The tester will display the voltage reading on the LCD display and emit an audible tone to indicate continuity.

Note: The tester will indicate the presence of voltage > 50V AC or DC.

Testing GFCI-Protected Circuits

Turn off the power to the circuit being tested.
Plug the GFCI tester into the GFCI outlet being tested.
Press the test button on the GFCI tester.
The GFCI tester should trip and the tester will emit an audible
tone to indicate the proper functioning of the GFCI device.

Maintenance

After use, disconnect the test leads from the circuit being tested and turn off the tester. Clean the tester and test leads with a damp cloth and store them in a dry place. Replace the batteries as needed.

Note: Ensure that the battery polarity is correct when replacing batteries. Also, replace the battery compartment door securely.

Customer Service

For any issues with the Klein Tools ET250, contact customer service at:

Phone: 1-800-553-4676
Email: customerservice@kleintools.com
Website: www.kleintools.com

GENERAL SPECIFICATIONS

Klein Tools ET250 is a solid-state, digital voltage and continuity tester. It measures AC/DC voltages up to 600V and tests for continuity. Additionally, the ET250 tests GFCI protected circuits to verify that the GFCI device is functioning appropriately. The tester includes a backlight and worklight for working in reduced ambient lighting conditions.

Operating Altitude: ≤ 6562 ft. (2000 m)
Relative Humidity: <80% non-condensing
Operating Temperature: 5°F to 113°F (-15°C to 45°C)
Storage Temperature: -4°F to 140°F (-20°C to 60°C)
Battery Type: 3 x 1.5V AAA
Dimensions: 6.06″ x 2.33″ x 1.64″ (153.8 x 59.2 x 41.6 mm)
Weight: 6 oz (170 g) without test leads
Calibration: Accurate for one year
Standards: Conforms to EN61326-1:2013, EN61326-2:2013,
- UL STD. 61010-1, 61010-2-030 and 61010-2-033.
- Certified to CSA STD. C22.2 NO. 61010-1, 61010-2-030 and 61010-2-033
Pollution degree: 2
Drop Protection: 9.8 ft. (3m)
Ingress Protection: IP53 (see WARNINGS)
Safety Rating: CAT IV 600V, Class 2, Double insulation
CAT IV: Measurement category IV is applicable to test and measuring circuits connected at the source of the building’s low-voltage MAINS installation.
Electromagnetic Environment: IEC EN61326-1:2013. This equipment meets requirements for use in basic and controlled electromagnetic environments like residential properties, business premises, and light-industrial locations.

ELECTRICAL SPECIFICATIONS

AC Voltage Range: 2 – 600V AC RMS (45 – 400Hz)
DC Voltage Range: 2 – 600V DC
Maximum Measurable Voltage: 600V RMS
Resolution: 1V
Accuracy: ±(2% + 2V)
Test Current: < 0.3mA at 120V AC RMS or 120V DC
Continuity: 0 – 270kΩ
GFCI Test : >6mA via button
Nominal Voltage GFCI Testing: 10-135V AC at 50/60Hz in 3- wire outlet
Auto-Detect: Tester auto-detects and selects VAC / VDC /Continuity modes
Specifications subject to change.

WARNINGS

To ensure safe operation and service of the tester, follow these instructions. Failure to observe these warnings can result in severe injury or death.
Before each use verify tester operation by measuring a known voltage.
Never use the tester on a circuit with voltages that exceed the category based rating of this tester.
Do not use the tester during electrical storms or in wet weather.
Do not use the tester or test leads if they appear to be damaged.
Replacement test-leads should conform to EN 61010-031 and be rated CAT IV 600V, 10A, or better. Do not use lower rated test leads.
Ensure tester leads are fully seated, and keep fingers behind the finger guards and away from the metal probe contacts when making measurements.
Use caution when working with voltages above 25V AC RMS or 60V DC. Such voltages pose a shock hazard.
To avoid false readings that could lead to electric shock, replace batteries when a low battery indicator appears.
Always adhere to local and national safety codes. Use personal protective equipment to prevent shock and arc blast injury where hazardous live conductors are exposed.
Tester is IP53 dust & water resistant. Following any contact with water, thoroughly dry tester and test lead jacks prior to subsequent use.

FEATURE DETAILS

KLEIN-TOOLS-ET250-Digital-AC-DC-Voltage-and-Continuity-
Tester-fig-1

NOTE: There are no user-serviceable parts inside tester.

Test Lead Holders
Backlit LCD Display
Power-On/Off Button
Worklight Button
Backlight Button
GFCI Test Button
Test Lead Jacks (bottom of tester)

SYMBOLS ON TESTER

Positive Lead Input
Double Insulated Class II
Warning or Caution
Read Instructions
Common / Negative Lead Input
Ground
Risk of Electrical Shock

SYMBOLS ON LCD

Indicates presence of voltage > 50V AC or DC
Audible Continuity
Ground Fault Circuit Interrupter testing mode
AC Voltage
DC Voltage
Worklight
Low Battery Indicator

FUNCTION BUTTONS

POWER-ON/OFF: Press the On/Off button to turn the tester on or off. The tester will automatically power-ON if test leads are applied to a circuit and it detects voltage >12V. The tester will automatically power-OFF following 15 minutes of inactivity to conserve battery life.
BACKLIGHT: Press the Backlight button to turn on/off the backlight. The backlight will automatically power off after 3 minutes of inactivity to conserve battery life.
WORKLIGHT: Press the Worklight button to turn on/off the worklight. The worklight will remain on until turned off or tester powers off.
GFCI TEST: Press to perform a GFCI test. See OPERATING
INSTRUCTIONS for details.

OPERATING INSTRUCTIONS

CONNECTING TEST LEADS

USE PROPER SAFETY-RATED TEST LEADS

Connect test leads by inserting the black lead into the “COM” jack and the red lead into the “+” jack. Do not test if leads are improperly seated. Results could cause intermittent display readings. To ensure proper connection, firmly press leads into the input jack completely.

TESTING IN CAT III / CAT IV MEASUREMENT LOCATIONS

Ensure the test lead shield is pressed firmly in place. Failure to use the CAT III / CAT IV shield increases arc-flash risk.

TESTING IN CAT II MEASUREMENT LOCATIONS

CAT III / CAT IV shields may be removed for CAT II locations. This will allow testing on recessed conductors such as standard wall outlets. Take care not to lose the shields.

AC/DC VOLTAGE (LESS THAN 600V)

Apply test leads to the system under test to measure voltage; the voltage measured will be reflected in the display. The tester will automatically detect the presence of AC or DC voltage and illuminate the appropriate icon in the display.
NOTE: Test-leads seated in the lead holders on the back of the tester are spaced correctly to test tamper-resistant US-style outlets.
CAUTION: The maximum testing voltage is 600V. ‘OL’ will show in the display if a voltage in excess of 600V is detected. No other warnings will be delivered for voltages above 600V. Testing voltages above 600V should not be attempted under any circumstances.

CONTINUITY

Remove power from the circuit. Test for continuity by applying test leads to the system being tested. The tester automatically enters continuity testing mode. If resistance < 270kΩ is detected, an audible signal will sound and the continuity icon “ ” will show in the display indicating continuity.
If the circuit is open, ” ” will show in the display.
DO NOT attempt to measure continuity on a live circuit.

GFCI TESTING

CAUTION: Check the GFCI Receptacle user manual for more information. Always contact a qualifi ed electrician to resolve wiring problems. Operate the Test Button on the GFCI Receptacle. If the GFCI circuit does not trip, the receptacle is not operating properly.
CAUTION: To resolve wiring or GFCI concerns, contact a qualifi ed electrician.
To test the functionality of a receptacle protected by a Ground Fault Circuit Interrupter (GFCI), apply leads to the hot/live and ground terminals. Press the GFCI Test button on the ET250 tester.
If the GFCI device is wired properly, the GFCI will trip and the circuit will become de-energized. The ET250 tester will stop indicating voltage.
If the GFCI receptacle is incorrectly wired, the power to the circuit will remain and the ET250 will continue to indicate voltage. Contact a qualified electrician to resolve wiring problems.
NOTE: The GFCI Test mode on this tester is deactivated in the presence of voltages > 135V.

MAINTENANCE

BATTERY REPLACEMENT

When the Low Battery indicator shows low battery strength ( ), batteries must be replaced.

Remove 2 screws from the battery door.
Replace 3 x 1.5V AAA batteries (note proper polarity).
Replace the battery door and fasten it securely with screws.

To avoid the risk of electric shock, disconnect leads from any voltage source before removing the battery door.
To avoid the risk of electric shock, do not operate the tester while the battery door is removed.

NOTE: There are no user-serviceable parts inside the tester.

CLEANING

Disconnect test leads. Clean the instrument by using a damp cloth. Do not use abrasive cleaners or solvents.

STORAGE

Do not expose to high temperatures or humidity. After a period of storage in extreme conditions exceeding the limits mentioned in the General Specifications section, allow the instrument to return to normal operating conditions before use.

FCC AND IC COMPLIANCE

See this product’s page at www.kleintools.com for FCC compliance information.
Canada ICES-003 (B) / NMB-003 (B)

WARRANTY

www.kleintools.com/warranty

DISPOSAL / RECYCLE

Do not place equipment and its accessories in the trash. Items must be properly disposed of in accordance with local regulations. Please see www.epa.gov/recycle. for additional information.

CUSTOMER SERVICE

KLEIN TOOLS, INC.
450 Bond Street Lincolnshire, IL 60069 1-800-553-4676 customerservice@kleintools.com www.kleintools.com

Documents / Resources

| KLEIN TOOLS ET250 Digital AC-DC Voltage and Continuity Tester [pdf] Instruction Manual
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