The HIOKI IR4056-20 is a digital 1,000 V insulation tester measuring up to 4,000 MΩ. Its auto-discharge function safely dissipates stored charge after testing, making it a dependable tool for motor, cable, and transformer insulation verification.
The HIOKI IR4056-20 insulation tester provides digital measurement of insulation resistance up to 4,000 MΩ at test voltages of 500 V or 1,000 V DC. Designed for electrical engineers and maintenance technicians, it combines a clear backlit LCD with an auto-discharge function that safely dissipates stored charge immediately after the test is complete — protecting both the operator and connected equipment.
The IR4056-20 is well suited to routine and scheduled insulation testing of motors, cables, transformers, and distribution equipment in industrial and commercial environments. Its compact size and battery operation make it a practical choice for field electrical testing across Perth and Western Australia.
HIOKI instruments are available from Hinco Instruments, Western Australia’s specialist supplier of test and measurement equipment. Our engineering team can assist with product selection, application guidance, and calibration services to support accurate and reliable insulation testing across mining, industrial, and electrical engineering applications throughout Perth and regional WA. Contact us for pricing and availability.
| Specification | Details |
|---|---|
| Measurement Type | Digital Insulation Resistance Tester |
| Test Voltages | 500 V / 1,000 V DC |
| Resistance Range | Up to 4,000 MΩ |
| Display | Backlit LCD |
| Auto Discharge | Yes — after test completion |
| Power Supply | 006P 9 V battery × 1 |
| Weight | Approx. 250 g |
Download HIOKI IR4056-20 1kV Insulation Tester (PDF)
Download HIOKI IR4056-20 1kV Insulation Tester Manual (PDF)
Hinco Instruments supplies HIOKI test and measurement equipment across Perth and Western Australia. With over 70 years of instrumentation expertise, we also provide professional calibration services to support accurate and reliable measurement performance.
Hinco Instruments is an authorised supplier of HIOKI test and measurement equipment across Perth and Western Australia. We provide professional calibration services and ongoing support to keep your instruments performing to specification. Contact us for pricing and availability.
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