KYORITSU KEW 4105A Digital Earth Tester | 3-pole and 2-pole measurement, 20 / 200 / 2000 Ω, earth voltage 0–200 V, IP54

KYORITSU KEW 4105A Digital Earth Tester: 3-Pole and 2-Pole Measurement

Overview

The KEW 4105A is a KYORITSU digital earth tester (soft case version; the hard case version is the KEW 4105A-H) that measures by the 3-pole method using auxiliary earth spikes or by the simplified 2-pole method. The manufacturer states that its circuit reduces the influence of earth voltage and auxiliary spike resistance; with a 2 mA test current, it is unlikely to trip earth leakage breakers on the circuit during measurement.

Key Specifications

• Earth resistance: 20 / 200 / 2000 Ω (0.00–1999 Ω); ±2%rdg±0.1 Ω, ±2%rdg±3dgt
• Earth voltage: 0–200 V AC (50 / 60 Hz), ±1%rdg±4dgt
• Standards and protection: IEC 61010-1 CAT III 300 V; IEC 61557-1, 5; IP54
• Power and weight: 6 × AA; 105 × 158 × 70 mm (with cover), approx. 550 g
• Supplied accessories: 7095A test leads (red 20 m, yellow 10 m, green 5 m), 7127B simplified measurement probe, two 8032 auxiliary earth spikes

Applications

• Earth resistance measurement for buildings, power distribution and equipment earthing.

Specifications per the KYORITSU English-site product page and KEW 4105A catalog (retrieved 2026-10-21).