Hioki IR4056-20 Insulation Tester
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Hioki insulation testers 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.

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

Major Applications
Designed for Electrical and Industrial testing
Technical Specifications
- Rated output voltage: 50 V DC,125 V DC,250 V DC,500 V DC,1000 V DC
- Effective maximum indicated value: 100 MO
- Accuracy 1st effective measuring range: ±2 %
- Overload protection: 600 V AC (10s)

General Specifications
- Operating temperature range and humidity: (-25 to +40 °C)90% RH
- Storage temperature range: (-25 to +65 °C)
- IP rating: IP 40
- Maximum rated voltage to terminal: 600 V AC (AC voltage function)
- CAT III 600 V