Kyoritsu KEW 4105A Review
Table of ContentsA Different Look at the KEW 4105A
The Kyoritsu KEW 4105A is intended for technicians who need dependable earth resistance measurement without dealing with oversized or overly complicated test equipment. It brings together essential grounding test functions in a body that is portable, readable, and suitable for repeated field use.
In many electrical projects, checking the quality of the grounding system is not just part of documentation—it is part of ensuring safety, protection performance, and compliance. This is where the KEW 4105A becomes valuable: it offers practical measurement capability in a format designed for real job sites.
With support for both 2-pole and 3-pole measurement, a clear digital display, low test current, and resistance to dust and splashing water, it fits well into the daily workflow of electrical inspection and maintenance teams.
- Simple operation in the field
- Reliable grounding verification
- Useful earth voltage measurement
- Compact form for mobile technicians
- Practical design for routine inspections
Designed for Practical Work
This tester is not built only around raw specifications. It is also built around convenience in actual use—fast setup, good readability, easy transportation, and dependable performance in service and maintenance conditions.
Its IP54-rated construction adds confidence when working in environments where dust or splashing water may be present.
Core Functional Advantages
Key Features at a Glance
2-Pole and 3-Pole Testing Capability
Allows technicians to choose the appropriate measurement method depending on site conditions and grounding configuration.
Earth Voltage Measurement Function
Provides additional functionality beyond resistance testing and supports better assessment of grounding conditions.
Improved Stability in Real Conditions
Designed to reduce the influence of earth voltage and auxiliary spike resistance on measurement results.
Portable and Site-Friendly Form
Compact dimensions and practical construction make it convenient for technicians who work across multiple locations.
Technical Specifications
| Item | Details |
|---|---|
| Model | Kyoritsu KEW 4105A |
| Type | Earth Tester |
| Measurement Method | 2-pole / 3-pole |
| Earth Resistance Range | 0.00 to 1999Ω |
| Display Ranges | 20Ω / 200Ω / 2000Ω |
| Earth Voltage Range | 0.0 to 199.9V AC |
| Frequency | 50/60Hz |
| Resistance Accuracy | ±2%rdg ±0.1Ω / ±2%rdg ±3dgt |
| Voltage Accuracy | ±1%rdg ±4dgt |
| Protection Rating | IP54 |
| Power Supply | 6 × AA batteries |
| Dimensions | 105 × 158 × 70 mm |
| Weight | Approx. 550 g |
- Electrical maintenance
- Ground system inspection
- Commercial installations
- Industrial service checks
- Commissioning work
- Periodic verification
- Electricians
- Inspectors
- Maintenance engineers
- Service contractors
- Technical field teams
Accessories and Package Content
Included in the Box
Optional Accessories
Quick Questions About KEW 4105A
A Reliable Choice for Ground Resistance Measurement
The Kyoritsu KEW 4105A Earth Tester offers the essential capabilities professionals expect from a field-ready grounding tester: flexible measurement methods, earth voltage testing, strong portability, and practical protection for everyday use.
For organizations and technicians looking for a dependable, recognizable, and efficient earth testing instrument, the KEW 4105A remains a practical and professional solution.
