If the shipping source/seller is not "Amazon.co.jp", the Japanese manual may not be attached.
Entry model in Hioki Electric Co., Ltd. insulation resistance meter series
JIS certified 5 range insulation resistance meter (50V/125V/250V/500V/1000V)
Equipped with white LED backlight
Rugged design that can withstand drops from 1m on concrete
Integrated shape of measuring instrument and portable hard case (with neck strap)
Compare the set standard value and measured value to determine PASS or FAIL. FAIL judgment is notified by a red light on the display screen and a buzzer sound.
The difference between IR4051-10 and IR4051-11 is the attached test lead. (IR4051-10: Test lead L9787 included, IR4051-11: Lead set with switch L9788-11 included)
[Product Description]
The Hioki IR4051‑10 is a highly reliable digital insulation resistance tester certified to JIS C1302 standards. Designed for precision and ease of use, it performs consistently regardless of environmental or testing conditions, making it ideal for maintenance and inspection of electrical equipment.
-JIS-certified 5-range testing (50V / 125V / 250V / 500V / 1000V) → Supports a wide variety of insulation testing needs
-Comparator function with response time of approximately 0.8 seconds → Quickly determines measurement results as “PASS” or “FAIL”
-Rugged design withstands drops from heights of up to 1 meter (drop-proof) → Built to endure the shocks of field use with confidence
-Equipped with low resistance range (continuity check) with 200mA output → Useful for checking grounding lines and circuit continuity
-AC/DC voltage measurement with automatic detection → Supports DC systems such as solar panels and electric vehicles
-Backlit LCD display (FSTN/semi-transmissive) → High visibility and readability even in dark or outdoor environments
-Compact integrated hard case design → Convenient for carrying and storage with the built-in protective case
In addition, it offers several features that enhance usability on the job:
-Auto Power Save (APS) function: Extends battery life and prevents unexpected shutdowns during work
-Live line alert and automatic discharge function: Safety features that prevent electric shock and residual charge hazards
-Easy-to-use measurement switch: Enables one-handed operation for single or continuous measurements
[Recommended For]
-Electrical technicians involved in installation, inspection, and maintenance work
-Professionals working with solar panels, electric vehicles, and other DC systems
-Users who need accurate insulation measurement unaffected by job site conditions
-Those looking for a cost-effective solution that covers multiple testing requirements with one tool
The Hioki IR4051‑10 combines JIS-certified reliability, robust construction, fast response time, and versatile measurement capabilities. With excellent operability and a highly visible display, it performs well in both indoor and outdoor settings. A powerful tool to enhance the safety and efficiency of electrical system maintenance.
