Shop - Hioki IR4056‑20 Digital Handheld Insulation Tester

Description

The IR4056‑20 is a 5‑range insulation resistance tester (megohmmeter) from Hioki. It’s designed for field use to check the insulation quality of electrical equipment and wiring. Its rugged build, good safety rating, and practical voltage ranges make it ideal for maintenance work, preventive inspections, and quality checks.

Key Features & Specifications

• Test Voltage / Insulation Ranges: 50 V / 125 V / 250 V / 500 V / 1000 V → up to 4000 MΩ on the highest range.

• Reading Speed: Medium‑speed digital readings, with a 0.8 s response time for PASS / FAIL decisions.

• Drop Resistance: Drop-proof up to 1 meter (onto concrete).

• Display: Semi-transmissive FSTN LCD with backlight + bar‑graph indicator.

• LED Illumination: Has a bright LED to help illuminate the test lead area for working in dark / dim places.

• Continuity Check: Can do a 200 mA continuity test (good for grounding / earth-checking).

• Voltage Measurement: Built-in AC/DC voltage meter – useful to check live circuits before insulation test.

• Comparator Function: You can set a reference value → it gives a PASS / FAIL result on the LCD for quick checks.

• Live Circuit Indicator: Alerts if the circuit is live before testing insulation.

• Automatic Discharge: Automatically discharges the test voltage after measurement so you don’t have to worry about residual charge.

• Auto Power Save: Turns off after a while if unused.

• Power Source: 4 × LR6 (AA) alkaline batteries → ~20 hours of use (with comparator off, no backlight, using 500V range).Overload Protection: Up to 600 V AC for 10 seconds on test terminals.

• Safety / Durability:

  • CAT III 600 V rating.

  • IP40 protection.

• Dimensions / Weight: ~159 × 177 × 53 mm, 600 g (includes batteries, without test leads)

• Included Items: Test lead L9787 ×1, Neck strap ×1, Instruction manual, 4 × AA batteries.