Our Most Popular Model Offering Reading Stability in Medium- speed Digital Format

Hioki insulation testers or megohmmeters feature all-in-one designs including built-in rugged cases and test lead storage compartments. The IR4056 is a 5-range, 50V to 1000V digital insulation resistance tester with efficient functions and features to help shorten work time associated with field insulation testing.

Key Features

5-range testing voltage of 50 V/100 MΩ to 1000 V/4000 MΩ

Stable & medium-speed digital readings, 0.8 second response time of PASS/ FAIL decisions

Drop proof onto concrete from 1m (3.28 feet)

Bright LED, luminous LCD, test lead with bright LED lamp to illuminate near hand (Also available in the IR4056-21)

Continuity check via 200 mA testing

Built in AC/DC voltage meter, useful for testing solar power generation systems and electric vehicles