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Extech MG310: Digital Insulation Tester

Compact Insulation Resistance Tester with Snap-On Protective Cover

View Datasheet > MG310


The MG310 is a Compact Insulation Resistance Tester which allows quick and easy testing/troubleshooting of motors, transducers, and other industrial appliances. Wide range measurement up to 1000V with Insulation Resistance to 5.5GΩ. Includes an easy snap on protective hard cover and soft pouch to conveniently transport your meter and accessories to the next job site or to safely store away. Featuring Low Resistance measurement with Zero function, Continuity beeper, Large 2000 count dual display with backlight, High voltage and overload indication, Auto-discharge and voltage output warning functions as well as Low battery indication. Complete with test leads, alligator clips, 6 x AA batteries, hard cover, and soft carrying case.

Additional information

Test Voltage


Insulation Resistance (autoranging)

0.00 to 99.9MΩ, 100M to 5.5GΩ

AC Voltage

30 to 600V


0.00 to 200Ω


6 x 4 x 2.8" (150 x 100 x 71mm)

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