HIOKI IR4056-20 | Insulation Tester

A CAT III 600 V-rated insulation resistance tester with five test voltage ranges from 50 V to 1000 V DC, built for fast and reliable field diagnostics.

Request a quote in under a minute - call +971 6 5436933.

Model: IR4056-20

The Hioki IR4056-20 is designed for electrical maintenance technicians and installers who need fast, reliable insulation resistance testing across different voltage classes. With five selectable test voltages of 50 V, 125 V, 250 V, 500 V, and 1000 V DC, it provides flexibility for testing control circuits, cables, motors, and industrial electrical equipment.

The tester measures insulation resistance up to 4000 MΩ at the 1000 V test range. Its semi-transmissive FSTN LCD with backlighting and bar-graph display helps keep measurement results visible in bright outdoor conditions and dim electrical panel environments.

A response time of approximately 0.8 seconds supports quick PASS/FAIL decisions during repetitive testing. The built-in case is designed to withstand drops from up to 1 metre onto concrete and includes storage compartments for test leads, making it practical for field-service work.

The IR4056-20 also includes a built-in AC/DC voltmeter for supplementary voltage checks, with measurement up to 600 V. Its CAT III 600 V safety rating makes it suitable for distribution-level electrical testing applications.

Need a different specification? The Hioki range also includes the IR3455, a high-voltage insulation tester designed for testing applications from 250 V up to 5 kV, so you can match the model to your exact application.

Ready to order the IR4056-20? Speak to our team. Call +971 6 5436933.

Key Benefits

• Five insulation test voltage ranges from 50 V to 1000 V DC
• Insulation resistance measurement up to 4000 MΩ at 1000 V
• CAT III 600 V safety rating for field electrical testing
• Approximately 0.8-second response time for quick PASS/FAIL testing
• Rugged case designed to withstand 1-metre drops onto concrete
• Built-in AC/DC voltmeter for supplementary voltage measurements
• Built-in storage compartments for test leads

Who This Product Is Best For

• Electrical maintenance technicians performing insulation testing
• Electrical installers testing cables and equipment
• Technicians checking motors and electrical machinery
• Service professionals working on control circuits and industrial power equipment
• Field technicians requiring a rugged insulation tester for regular electrical inspections

How to Use

1. Select the appropriate insulation test voltage from 50 V, 125 V, 250 V, 500 V, or 1000 V DC based on the equipment being tested.
2. Connect the test leads correctly to the circuit, cable, motor, or component under test.
3. Start the insulation resistance test and observe the resistance value or PASS/FAIL indication.
4. Use the built-in AC/DC voltmeter when a supplementary voltage measurement is required.
5. Store the test leads in the dedicated compartments after completing the inspection.

Frequently Asked Questions

What test voltages does the IR4056-20 support?

The IR4056-20 supports five test voltage ranges: 50 V, 125 V, 250 V, 500 V, and 1000 V DC.

What is the maximum insulation resistance the IR4056-20 can measure?

It can measure insulation resistance up to 4000 MΩ at the 1000 V test range.

Is the IR4056-20 suitable for field use?

Yes. The tester has a rugged case designed to withstand a 1-metre drop onto concrete and includes a CAT III 600 V safety rating.

Does the IR4056-20 also measure AC and DC voltage?

Yes. It includes a built-in AC/DC voltmeter with measurement capability up to 600 V.

How quickly does the IR4056-20 provide a PASS/FAIL result?

The tester has a response time of approximately 0.8 seconds for PASS/FAIL testing.

Can the IR4056-20 be used for motor and cable testing?

Yes. Its selectable test voltages and insulation resistance measurement capabilities make it suitable for testing motors, cables, control circuits, and other electrical equipment.

What safety rating does the IR4056-20 have?

The IR4056-20 is rated CAT III 600 V.

How can I get pricing for the IR4056-20?

Pricing is quote-based. Call +971 6 5436933 to check current pricing and availability.

Does GeneralTech Shop deliver the IR4056-20 across the UAE?

Call +971 6 5436933 and our team will confirm delivery availability and timelines for your emirate.

Should I choose the IR4056-20 or IR3455?

The IR4056-20 provides insulation testing up to 1000 V and is designed for field electrical testing. The IR3455 is intended for higher-voltage insulation testing applications up to 5 kV. Compare the voltage requirements of your application before ordering.

For pricing or to place an order, contact GeneralTech Shop. Call +971 6 5436933.