MOHAMMAD MAHDI Electronics Trading LLC
Hioki IR4056-20 Insulation Tester
Brand:
Hioki
SKU:
13450
The Hioki IR4056-20 is a high-speed, 5-range digital insulation resistance tester engineered for routine electrical maintenance, industrial panel inspection, and telecom plant testing with test voltages from 50 V to 1000 V.
- 5 Test Voltage Ranges: 50 V, 125 V, 250 V, 500 V, and 1000 V DC testing up to 4000 MΩ.
- High-Speed Pass/Fail Response: Delivers definitive stable readings and comparator LED/audio alerts in just 0.8 seconds.
- Drop-Proof Durability: Rugged design tested to withstand a 1-meter drop onto concrete.
- AC/DC Voltage Measurement: Integrated 600 V AC/DC voltmeter and 200 mA continuity testing.
- GCC Ready: Maintained in local stock with same-day Dubai dispatch and optional ISO 17025 calibration certification.
- Secure Purchase
- Fast Delivery
- Genuine Guarantee
- Online Payment
Description
What is the Hioki IR4056-20 Insulation Tester Used For?
The Hioki IR4056-20 is a rugged 5-range digital insulation resistance tester (often referred to across GCC job sites as a digital Hioki megger) designed for low-to-medium voltage electrical equipment, residential wiring, industrial control panels, and telecommunications cabling. It performs precision insulation testing across 50 V, 125 V, 250 V, 500 V, and 1000 V DC up to 4000 MΩ, while featuring an ultrafast 0.8-second comparator for immediate Pass/Fail visual and acoustic sorting during high-volume testing.
What is Included in the Hioki IR4056-20 Standard Box?
Procuring an authentic Hioki unit ensures field technicians receive all factory-certified accessories required for immediate compliance testing:
- Hioki IR4056-20 Main Unit: Factory calibrated 5-range digital insulation resistance tester.
- Test Lead Set L9787: Heavy-duty test lead with safety probe cap.
- Neck Strap: Hands-free field operation strap.
- Instruction Manual: Comprehensive operating manual and safety sheet.
- Alkaline Batteries: 4 × LR6 (AA) alkaline batteries (approx. 20 hours continuous operation).
Hioki IR4056-20 vs. Other Hioki IR4050 Series Insulation Testers
Choosing the right model within the Hioki IR4050 series depends on whether you require remote test leads, photovoltaic (PV) solar testing, or wireless Bluetooth connectivity.
| Model | Test Voltages | Max Resistance | Key Differentiator / Included Lead | Primary Application |
|---|---|---|---|---|
| Hioki IR4056-20 | 50V / 125V / 250V / 500V / 1000V | 4000 MΩ | Standard Lead Set L9787 | General MEP & Industrial Panel Audits |
| Hioki IR4056-21 | 50V / 125V / 250V / 500V / 1000V | 4000 MΩ | Remote Switch Lead L9788-11 (integrated LED light) | One-Handed Dimly-Lit Switchgear Testing |
| Hioki IR4057-20 | 50V / 125V / 250V / 500V / 1000V | 4000 MΩ | High-Speed Bar Graph + 0.3s Comparator | High-Volume Production Line QC |
| Hioki IR4053-10 | 500V / 1000V (PV Dedicated) | 2000 MΩ | Dedicated PV Insulation Resistance Mode | Solar PV String Testing without Shorting |
How to Use the Hioki IR4056-20 (Quick 4-Step Field Guide)
- Discharge & Safety Check: Confirm the circuit is de-energized. The built-in live line indicator alerts you if AC/DC voltage exceeds 20 V.
- Select Voltage Range: Rotate the rotary switch to the required voltage (e.g., 250 V for telecom/electronics, 500 V for standard 230/400 V low-voltage lines, or 1000 V for industrial cables).
- Execute Test: Connect the black lead to earth/ground and the red lead to the line. Press the test button (flip up for continuous measurement).
- Evaluate Pass/Fail: Within 0.8 seconds, the display stabilizes. The backlit screen lights red with an audible buzzer if insulation fails below your preset limit, or stays white/green for a pass.
Budget & Procurement ROI: Why Invest in the Hioki IR4056-20?
When evaluating test equipment budgets for MEP contracting or facility management, the Hioki IR4056-20 delivers superior long-term Return on Investment (ROI) compared to single-range insulation testers:
- 5-In-1 Multi-Voltage Versatility: Replaces the need for separate 250 V telecom testers and 1000 V industrial meggers, reducing fleet acquisition costs.
- Jobsite Damage Reduction: The 1-meter drop-resistant housing prevents costly repairs and downtime in harsh GCC construction environments.
- Faster Audit Speed: The 0.8-second comparator response reduces test time per circuit by up to 50%, accelerating sign-offs for DEWA and municipality inspections.
Still deciding if this is the right tool for your site?
Before making a purchase, ensure you understand the specific voltage requirements for your project.
You can read our expert guide on Choosing the Best Insulation Tester to verify if the IR4056-20 meets your specific testing needs or if a different model is better suited for your application.
What is the Hioki IR4056-20 exactly used for in UAE electrical projects
The Hioki IR4056-20 is a 5-range digital insulation tester (Digital Megger) used to verify wiring safety and motor insulation across 50V to 1000V DC. It is specifically designed for MEP contractors and utility engineers in the GCC to perform high-speed Pass/Fail testing on industrial panels, telecom equipment, and residential distribution boards with a stabilized 0.8-second response time.
What is the difference between Hioki IR4056-20 and IR4056-21
The only difference is the included test lead set. The IR4056-20 comes with the standard L9787 leads, while the IR4056-21 includes the L9788-11 Remote Switch Lead, which features an integrated LED light and a "Start" button on the probe for easier one-handed testing in dark or cramped switchgears. The internal technical specs and accuracy of both units are identical.
Is the Hioki IR4056-20 price worth it for large-scale GCC projects
Yes, it offers the highest ROI due to its "5-testers-in-1" capability and rugged 1m drop-proof build. Instead of purchasing separate testers for low-voltage telecom (50V/125V) and industrial power (500V/1000V), the IR4056-20 covers all ranges. For B2B procurement, MME provides bulk discounts and GCC-wide shipping, significantly lowering the total cost of ownership (TCO) for field fleets.
Does this tester comply with DEWA, SEWA, and ADDC standards
Absolutely. The IR4056-20 is fully compliant with IEC 61557-1 and IEC 61557-2 standards. These certifications are mandatory for utility inspections across Dubai (DEWA), Sharjah (SEWA), and Abu Dhabi (ADDC). MME can supply each unit with an optional ISO 17025 accredited calibration certificate to ensure immediate approval for your site safety audits.
Specifications
Specifications
| Specification | Details |
|---|---|
| Test voltages | 50, 125, 250, 500, 1000 V DC (5 ranges) |
| Effective maximum indicated value (250 V DC) | 500 MΩ; accuracy ±2% rdg. |
| Lower limit resistance (250 V DC) | 0.25 MΩ |
| Overload protection (250 V DC) | 600 V AC (10 s) |
| DC voltage range | 4.2 V to 600 V, 4 ranges; accuracy ±1.3% rdg. |
| AC voltage range | 420 V, 2 ranges; accuracy ±2.3% rdg. |
| Continuity | Continuity check function |
| Power supply | AA alkaline (LR6) batteries ×4 |
| Dimensions | 159 (W) × 177 (H) × 53 (D) mm |
| Mass | Approx. 600 g |
Datasheet
Datasheet
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Reliable, accurate, and built tough — the IR4056-20 makes insulation testing fast and worry-free on every job.